最新刊期
卷 35 ， 期 S1 ， 1996
- 摘要：The paper give a brief account to the research on Hydro science in the world,and the research on hydro science of geograpical category in China.The forward part introduce:(1)The hydro science has came into a system,and it was composed of the hydrology (pure science),engineering hydrology (applied science) and water resources (applied science) 3 coures.(2)The research plan and research subjects of Internation IHD (1965～1974) and Internation IHP (1～IV,1975～1995).The hydrologic study subjects of the importance countries in the world.The last part introduce:(1)The 3 national hydrology society in China.(2)The 5 chief study works on the hydro science of geograpical category recent 40 years in china:① The study of the variances of water resources effects by the different geographical environment (includ the humam activities).② Research for hydro geography and regional hydrology.③Research for water cycle and water blance in china and each province.④Research for estuary,and.⑤ Research for water resources and hydrologic enviroment.关键词： hydrology;engineering hydrology;water resources
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发布时间：2023-12-11 - 摘要：On the basis of the information entropy concept,the criterion of minimum information entropy is prososed as a standard for optimizing the hydrologic frequency distribution in the paper.In view of the demand for calculating the entropy values,we also give the generalized derivation method of the information entropy and the information entropy formula of some useful hydrologic frequencys.Fourteen practical examples are given at last.
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发布时间：2023-12-11 - 摘要：The Xisha archipelago is located in tropical regions.It is sultounded by oceans and with a climate of high in temperature and plenty in rainfall.The islands are composed of coral reefs,whose modem landforms are developed after a subside in tectonic movement and an uplift followed.Islands are narrow in area.Particular environment developes particular hydrology which is characterised by that surface water storages are rare,surface runoff is difficult to develope and deep groundwater is connected with salt water,thus fresh water resource is scarece thought rainfall is abundant.With the increasing human activities,questions are brought out for island development such as how to imporove hydrologic conditions so as to provide enough fresh water resource,to improve the ecosystem and to keep continuous developement for environment and economic.关键词： coral reef;water storage;lagoon;ocean hydrology
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发布时间：2023-12-11 - 摘要：In this paper,on the analysis of the types and characteristics and developing advantadges of the tourist resources in the hot spring scenic spot in Dianbai Coungty of Guangdong Province,the developing principle and planning modle and overall distribution for the hot spring scenic spot are set up,and the steps of execution are put forward.The research is realistic applicable and in significance of guidance for the construction and development of hot spring scenic spot.
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发布时间：2023-12-11 - 摘要：After overall discussion research on Guangdong terrace in this paper,it is pointed out that time of Q 3 sediment accumulation is as long as 10 5 years,reflecting suitably great area of Guangdong is not clearly structural lift during this time,many erosion surfaces formed in the Pleistocene Epoch in condition of long term similar level base are a main factor creating age difference of terrace sediment at same height,moreover,the structural condition is yet created for forming marine erosion platform wide tens and a hundred metres or so on bedrocks coast along the coast zone. Powers of the terrace deform are yet probed in this paper.
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发布时间：2023-12-11 - 摘要：Theoretical formula for sediment compaction capacity Δh=h(n 0-n)/(1-n 0) is infered. Main factors resulting in tops leight of Q 2 3 sea facies in coastal accumulation plains is lower metres to tens metres than remains leight of paleo sea level on rock coast are:1 compaction of sediments,2 paleo landform is eroded and droped by running water in low sea level in glacial epoch;3 structure dropping in some areas. The three factors have been progressively resolved,paleo sea level,rise and fall on the paleo landform and capacity of the structure dropping can right have been define.关键词： formula for sediment compaction capacity;porosity;sea level;Zhujiang Delta
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发布时间：2023-12-11 - 摘要：Heavy metal may be harmful to crops when its content in soils goes beyond the normal level.In this paper,discussion on content of Cu,Pb,Zn,Cd,Cr,Ni in agriculture soils in Nanhai city was presented.The content of heavy metal in agriculture soils is controlled by a series of factors such as irrigation of field with waste water,soil parent material,soil property,etc.The content of heavey metal in the southern and eastern regions of Nanhai city is more higher than in the northern and western part.关键词：soil;heavy metal;Nanhai city
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发布时间：2023-12-11 - 摘要：This paper aims to discuss the production potential(PP) and yield increment potential(YIP) of paddy rice which makes up 88 percent of total food production in Guangdng.The paper is divided into two parts.The first part deals with PP.It points out that PP of late rice is greater than that of early rice and PP in southern plain area is greater than that in northern mountain area .In the second part,at the beginning,it reviews the yield of paddy rice per unit area and shows that the output is ever icereasing,but the increment of early rice is a little greater than that of late rice.Then,it discusses the utilization efficiency (UE) of paddy rice.It indicates UE of early rice is higher than that of late one and UE in the north is higher than that in the south.Finally,it deals with YIP.It is obvious that there is much room for YIP of paddy rice.To achieve greater YIP,the production of late rice and southern plain coastal area,where most of the fertile arable farmland lies,should be focused on.
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发布时间：2023-12-11 - 摘要：The low economic growth region in this paper fefers to the area with low development tlevel or the less developed area compared with the surrounding areas. This paper,taking Xinfeng County of Guangdong Provinces as an example,focuses on the rise of the low economic growth regions. Firstly,the reasons for causing the low economic growth are analyzed. On the one hand,the unfavorable location and natural conditions,huge population,backward transportation and technology have hindered the economic growth of the county. And the breakthrough of driving its economy has not been found on the other. Secondly,the dynamics of promoting the rise or taking off of the low economic growth region ae identifiecd. With the shift of the economic gravity towards the Pacific Asian area,the economic and technological radiation resulting strategies of realizing the provincial modernization and the policies of developing the mountain area and supporting the poor areas,together with the superiority of natural resources and long established infrastructures,can be considered the dynamics of the rise of the low economic growth region. Finally,the measures of promoting the rise of the low economic growth region are discussed:(1)to make the comprehensive planning and develop regional economy rationally on the basis of finding out the real conditions;(2)to determine the growth pole and develop along the traffic lines;(3)to speed up the construction of infrastructure;(4)to carry out favorable policies and raise funds for construction through various channels.
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发布时间：2023-12-11 - 摘要：The author puts forward the conception of mordern spatial structure of industrialization for the first time in the article,and analyses three pairs of dialectical basic characteristics. According to it,he advances that the spatial structure of industialization of Guangdong consists of one centre,two spools,three types,five regions and two networks. In the end,the author also raises two important measures for carrying out this structure.关键词： industrizlization;spatial structure;evolutionary action;intensifying action;catalytic action;reginonal devision of labour;regional combination
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发布时间：2023-12-11 - 摘要：This paper gives a brief account on the main land utiliztion problems in Pearl River Delta after reformation and open as well as the land utiliztion development tendency and basic macro control ways according to the development directions and goals of future economy and society To achieve the rational and sustainable utilization of land resources,several problems should be cared including optimizing the land utilization structure to improve the synthetical benefit,coordinating the land utilization among departments,systems and regions through intensifying planning consciousness and settling well the relationshp between land utilization and development of economy and society by reinforcing the management of land utilization to protect arable land,resources and environment.关键词： land utilizaion;macro control;Pearl River Delta
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发布时间：2023-12-11 - 摘要：In order to understand the variations of tidal current caused by the construction of the trestle in ChanLiu Oil and Gas Dock of Haikou city,a two dimensional current mathematical model is set up and the spilt operators method is adopted in solving the model.The numerical algorithm and the compute procedure developed in this paper,in which 20 different corner points and 8 different borders are included,are generally applicable.The effect of the trestle piers on the current is simulated by increasing the sea bed roughness in the pier site.The simulated and calculated results are satisfactory,and provide references for the construction of the dock.关键词： spilt operators;tidal current model;dock
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发布时间：2023-12-11 - 摘要：In connection with falling behind in the means of city planning and management in China,we put forward a concept of UIS and studying direction.In order to solve some problems of UIS,we point out the UIS of developing stages and some connecting problems.关键词：UIS;planning and management;study and develop
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发布时间：2023-12-11 - 摘要：In the process of carrying out developing strategies in Economic Area of the Pearl River Delta,according to theories of sustainable development,it is necessary to compile an Atlas of Economic Area of the Pearl River Delta in sustainable development.Some conceptions about the topic and structure of theatlas are given.关键词：economic area of Pearl River delta;sustainable development;atlas
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发布时间：2023-12-11 - 摘要：In order to exploit and use more effectively regional water resources,it is necessary to assess and classify proply the regional resources in Yangjiang whose water resources are distributed widely and complicatedly. This paper adopt the analytical method of Fuzzy cluster which considers the uncertain elements in regional water resources assessment and gets better results.
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发布时间：2023-12-11 - 摘要：The paper deals with trend surface analysis for Danxia ladform in the Danxia basin in Guangdong province. Data is acquired by reading a maximum and a minimum altitute in each kilometer grid in regions where Danxia landform is developed on a topologic map of 1∶50000,then trend surface analysis is conducted for the summits,valleys and the relief of the whole basin,the western part and the eastern part on the first order and the second order respectively. The analysis shows the general characteristics of the Danxia basin by a mathematical approach and reveals the relationship between geologic structure and landform as well.
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发布时间：2023-12-11 - 摘要：On the basis of sample analysis and treatment test for water quality and amount of waste water from Latice Production of the No 11 rubber factory of Guangzhou,the paper discusses the chemical reaction mechanism of waste water treatment.Reasonable and economic treatment strategies are suggested and put into action,which allows the discharge meet the state stardards.
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发布时间：2023-12-11 - 摘要：The carbonate rocks are most abundant in the upper Palaeozoic strata in Shaoguan area The carbonate rocks not only have the theoretical significance to study but also are important nonmetallic mineral resources.The paper deals with the characteristics of lithostratigraphy and paleontology of the oncolitic limestone and wormkalk and discusses their geological features,development future and the application.
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发布时间：2023-12-11 - 摘要：The Silurian strata in south Jiangsu are a series of clastic rocks from the continent which are mainly composed of argillaceous siltstones,silty mudstones with interlayers of lithic quartzareite and mixed with various volcaniclastic components.It has a thickness of more than 1600m.The rock assemblage characteristics and sedimentary structure show that sedimentary environment changed from the shallow marine phase to the coastal phase in Silurian period.Gaojiabian stage was mainly shallow marine phase and was transited to coastal phase.Houjiatang group was typical assemblage of onshore bar lagoon tidal flat coastal phases,where as the Fentou stage was tidal flat environment superposed by the action of storms.Maoshan stage was chiefly foreshore nearshore phases of beach environment.
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发布时间：2023-12-11 - 摘要：The iron ore body is formed in the volcanic clastic rock series of Setian group in the late Devonian Period,moreover,it is lay shaped and in conformable contact with the host rocks.Volcanic material and the features of minor elements and sulfide isotopes in the ore show that the metallogenic material is derived mainly from submarine volcanic activities,and the ore deposit indicates its volcainc sedimentary genesis.On the other hand,the aboundance values of the harmful elements such as Sn,Pb,Zn and As in the ore deposit are beyond the allowed range,but they have a regular distribution pattern.
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发布时间：2023-12-11 - 摘要：Erdaogou gold deposit,located in the south of Jinlin province,China,is an typical example of gold deposits hosted in the Archaean TTG grey gneiss,but it has been referred to greenstone belt type gold deposit for a long time. Detailed fluid inclusions and isotopic studies show that the temperature and pressure of the ore -forming fluids are 310～410℃ and (455～950)×10 5Pa respectively, whose fluid phase,with a salinity varying from 7 21 to 25 1 wt%NaCl,riches in Cl -,Na + and Ca 2+ ,while the gaseous phase contains reltaive large amount of CO 2 and CH 4; the f O 2 and f H 2S of the fluid are 10 -30 2 ar and 10 -1 6 bar separately;its respective values of δ 18 O H 2O and δ D are 5 902‰～6.864‰ and -85 98‰～-97 07‰,while 13 C ΣC and δ 34 S ΣS are -2 59‰～+0 74‰ and 1 5‰～9 0‰(average 5 5‰),besides, the ore-forming fluid contains high contents of radiogenic Pb. It′s bellieved that the metallogenetic fluid should be referred to typical magmatic solution and its genesis is related to the Mesozoic to Cenozoic magmatism in this area. Comparative studies show that the ore-forming fluid is quite different from that of typical Archaean greenstone belt type gold deposits.
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发布时间：2023-12-11 - 摘要：In the paper, the significance and the present states of the research on the coupled relationship between the vadose field and the deformation field in fractured rock mass is analysed. The stress coupling model of the two phase media (Solid liquid) of fractured rock mass is built. Besides,the attitude of the fractures in the model may use the surveysed data directly by a certain transformation relationship which we gave in the paper. And then, the applicability of the coupling model is prelimineary analysed. At last, the key problem in the future is pointed out.
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发布时间：2023-12-11 - 摘要：Content and compositions of amino acids in sediments from core ZK1,ZK37 and ZK1005 in chaoshan Plain, northeast Guangdong province, have been analyzed in this paper. The results indicates that: (1) Three states,free amino acids, soluble and insoluble fractions (peptide chains) derived from indigenous proteinaceous material had been preserved in sediments over geologic time. The insoluble fraction constituted the majority. (2)With icreasing depth (age),the content of amino acids in core ZK1 decreased rapidly. (3)The amino acid compositions in ZK1 differ from the ones in ZK1005,the former was mainly constituted by serine,and the latter was mainly constitued by glycine, valine,leucine,alanine,proline,aspartic acid and glutamic acid. (4)Samples of different depth in core ZK1 also have different amino acid composition. All these difference may be related to the biologic and lithologic composition of the sediment and to the diagenesis. In other word, amino acid content and composition may be used as an index reflecting environmental change. Racemization extens of alanine and aspartic acid in sediments and in fossil shells have also been determined. The results have been used to estimated the ages of the sediment. These dating data have been verified to be consistent with 14 C ages. Furthermore, by using the data listed in table 4,linear plots of D/L alanine and D/L aspartic acid versus depth or 14 C ages of sediments in core ZK37 have been obtained, which indicates that the racemization of alanine and aspartic acid in core ZK37 fit the law of first order kinetics.关键词：amino acid composition;amino acid age;core;Quaternary;Chaoshan plain
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发布时间：2023-12-11 - 摘要：Some fundamental Characteristics of thermoluminescence (TL) of natural quartz have been probed by experiments in this paper. It involve five aspects, including TL glow curve of quartz of nature and additive artificial irradiation, thermal stibility of TL signals,complete annealing temperature for natural TL signals of quartz, TL response to gamma ray irradiation, as well as effect of grain size on natural TL intensity of quartz.
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发布时间：2023-12-11 - 摘要：This paper presents the impacts of atmospheric environmental SO 2 concentration and intense heat on the people′s health during the process to build Guangzhou into an international metropolis. Basing on the statistical analysis of human mortality in summer and winter, it is found that deaths from heigh daily SO 2 concentration are 10 percent more than those from low daily SO 2 concentration in winter and deaths from "hot day" with maximum temperature heigher than 34℃ are 10 pencent more than those from ordinary day′s temperature in summer. Because of the pollutant varieties and pollutant concentrations will increase, the climate and urban district will become warmer, and the summer day will become longer and extremely hot, in order to build Guangzhou into an international metropolis, it needs to control the pollutant′s emission strictly, to improve the energy structures and plant more trees in and around the city. On city planning, distribution and designing of architecture, it must be considered the global warming and the intense heat due to city hot island. It needs to improve the medical facilities and establishing both air pollution forecast system and medical weather forecast system.
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发布时间：2023-12-11 - 摘要：We make statistics on 29 cases of tropical cyclone and analyse the relationship between the multi level steering flow (MLSF) and the speed and direction (including their sudden changes) of tropical cyclone movement. The results show that the MLSF is more indicative than a single lever streering level flow. The direction of MLSF approaches relatively the direction of tropical cyclones movement. Furthermore,the change in speed of MLSF closele relates to that of tropical cyclone. When the speed of MLSF is weak and its direction is varible, sudden changes in the speed or direction of tropical cyclone will occur frequently.关键词：tropical cyclone;steering flow;sudden change
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发布时间：2023-12-11 - 摘要：The seasonal variations of heat sources and moisture sinks over the middle and down reaches of Yangtze River and their relations with the evolutions of precipiation and wind are discussed using ECMWF data and rainfall from 1980 to 1986. There are most intense heat sources in spring, and stronger ones in summer,and stronger moitsture sinks from March to November except August, with peak values in June and Octomber. The latent heat plays an most important role in the atmospheric diabatic heating process, especially during the spring rainy season and Meiyu season. There are most prominent radiative cooling rates during summer. The precipitation during the period of Meiyu is primarily due to convective activities in the atmosphere, and the evaporation plays an important role in the process of water cycle. The transition seansons for vertical distributions of heat source and moisture sink occur in April and from late September to early Octomber.关键词： middle and down reaches of Yangtze River;heat sources;moisture sinks;seasonal variations
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发布时间：2023-12-11 - 摘要：The Zhuhai automatic meteorological observation system consists of 9 automatic metorological stations, a central control workstation and a radio network of data communication. The observation station automatically telemeter the real-time meteorological variables such as wind, temperature, humidity, pressure, rainfall and solar radiation. The central workstation performs the task of data acquiring, storing, displying and printing by the radio commuication network. It also provides the relevant authorites with important meteorological imformation through the computer network. The hardware used in this system are very new and reliable. The software used is advanced. And the continues operation of this system since Aug,1993,has successfully experienced many bad weather situations such as typhoon rain storms and thunder storms, and helped a lot for the weather prediction and services in time.
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发布时间：2023-12-11 - 摘要：By using the data of Beijing′s sounding and convective weather in Beijing area in summer of 1980-1989,the environmental conditions of the genesis of the convective weather and the differences between air-mass thunderstorm and severe local storm in the environmental conditions of their genesis are identified,and results obtained are compared with existing views on these conditions.
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发布时间：2023-12-11 - 摘要：Based on the past studies on the relationship between the heating of the Tibetan Plateau and the onset of the East Asian monsoon,a review was given in this paper as part of the preparation task of the coming SCS MONEX.The air above the Plateau is a relative heat source in all seasons compared with the air over the surrounding areas at the same level and the same latitude.The major souce of the heating above the Plateau is provided by the sensible heat transports with the mechanism of the dry thermal convection rising from the heated plateau surface,which produces the tropospheric heating over the Plateau.But the contribution from the precipitation is also important in the rainy season when the cumulus convection plays a significant role in the heating over the southeastern Plateau.The diabatic heating over the eastern Plateau is the primary cause of mid May atmospheric warming from the eastern Plateau to the centrl China Plain,which leads to the reversal of the meridional temperature gradient of the troposphere east of 80°E,which results in the commencement of the East Asian monsoon.关键词：eat sources;onset of monsoon;Tibetan Plateau;Nanhai
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发布时间：2023-12-11 - 摘要：Precipitation data in January and July for the years 1954～1990 are used in the analysis of drought & flood patterns over Guangdong province by using empirical orthogonal function method.The composition features of circulation for the first three extremly drought & flood years are studied.
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发布时间：2023-12-11 - 摘要：The contents of 62 elements of soils in Wenzhou city which are to be tested are in normal grochemical rangs. Because of the acid environment and the mountain oozing water,the elements moving in Mountain Yellow Soil is stronger than other soil types. The strongler accumulation of Hg,Cd in Rice Soil is related to the soil pollution caused by the activities of human being.
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发布时间：2023-12-11 - 摘要：The concentrations and available contents of heavy metals in sludge and agricultural soils in Guangzhou city are studied. The concentrations of organic matter、N、P in sewage sludge of Datansha sewage treatment plant are high and fertile. The concentrations of heavy metals in sewage sludge are under the criteria for agricultural use. The availabilities of Pb and Cr in sludge are low,but that of Cd、Zn、Cu and Mn are high. The mean concentraton of Cd in arable soil samples is higher than the criteria for agriculture.
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发布时间：2023-12-11 - 摘要：A three-dimensional model of wind driven water current is developed in the paper. The finite difference method of the Arakawa c grid is employed to obtain the numerical silution. The model is used in the simulation of wind driven water current in Moshuihu lake. The real case shows that the computer program of the difference method is simple and the calculated results is rational. The three dimensional model can discribe better the structural characteristic of wind driven water current in a lake.关键词：lake;wind driven water currrent;3 D numerical simulation
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发布时间：2023-12-11 - 摘要：Tropical grassland is now the largest terrestrial biome in terms of occupied area. It has been estimated that tropical grassland may store about 26% of the total carbon sequested by terrestrial communities each year. This paper summaries the work of author and other people in primary productivity of tropical grassland ,discusses implication and problems of these results and provides some suggestions for further study.
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发布时间：2023-12-11 - 摘要：According to exploitation and utilization of water resources, Jian River watershed was divided into three parts:reservation area of water souce in up stream,catchment area of Gaozhou Reservoir in up and middle stream and agricultural irrigation area in middle and down stream. Water quality in Jian River,Xiaodong River and Gaozhou Reservoir was evaluated. The results show that the water quality has gradually improved in recent year,but some indexes of water quality in Jian River and Xiaodong River have not reached the 3rd and 4th national criteria of surface water quality. Water quality in Gaozhou Reservoir is better and most of its indexes have reached the 2nd national criteria of surface quality. Finally, some suggestions are given for protection of water resources in Jian River Watershed.
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发布时间：2023-12-11 - 摘要：Progress in research on atmospheric pollution coefficient in China is reviewed in this paper. Research on atmospheric pollution coefficient in China can be classified into three stages: (1) The atmpspheric pollution coefficient formula was improved, considering effect of calm wind;(2) Based on analysis of relationship between wind speed and air pollutant concentration, the new atmospheric pollution coefficient formula was proposed,by using one-time monitoring wind speed instead of mean wind speed in calculation of atmospheric pollution coefficient; (3) Considering the comprehesive effect of wind speed,wind direction,and height of mixing layer,the expression of atmospheric pollution coefficient applied to regional, multi-source air pollution influence analysis was introduced. The expression of atmospheric pollution coefficient, considering the comprehensive effect of wind speed, wind direction, and height of mixing layer,is analysed in this paper. At last, the application of atmospheric pollution coefficient is discussed.还原关键词： atmospheric pollution coefficient;progress in research;application
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发布时间：2023-12-11 - 摘要：This paper summarized the late studies on Se contents and cycling regularities in rocks,soils,water,air and plants,factors affecting selenium migration,translocation and biological utilization,selenium control in selenium-rich and selenium-low regions. Meanwhile, it also discussed the further research directions and problems on the development of selenium rich products.关键词：ecological environment;selenium;biogeochemical cycling;control
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发布时间：2023-12-11 - 摘要：The ecological mechanism on red tide occurrence in Dapeng Bay is analyzed through phytoplankton communities′ changes.It reveals that the gathering with proliferation is the main cause of red tide occurrence in Dapeng Bay of South China Sea,where physical and biological factors are important causes to act simultaneously on phytoplankton.
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发布时间：2023-12-11 -
- 摘要：Based on the study on Wu Feng Landfill′s landform,geology,capacity, engineering design,and future use of landfill,the results showed that the design and technological specifications of this landfill are conformed to the Technological Standard(CJJ17-18) issued by The Construction Department of the People′s Republic of China.According to this landfill′s specifications,landfilling methods are proposed.The monitored data in 1992 showed that the methane′s pollution is not serious on the surface of this landfill,the sewage disposal system of this landfill is successful,and the water body has not been polluted.
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发布时间：2023-12-11 - 摘要：From the views of marine eco planning,several ecological reserves which had to be protected critically in the neighbouring bay of Donghai Island Industrializing Zone were studied and determined .By ascertaining the protected objectives,ecological effects on marine areas of different discharging projects of wastewater in the Industrializing Zone were analyzed,and the ecological benefit cost of wastewater discharge on the waters was also compared.Finally,this paper proposed the related measures for protecting the reserves further.关键词： Industrializing Zone;marine eco planning;ecological effects;protecting measures
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发布时间：2023-12-11 - 摘要：Applying a numerical model of combined wave refraction diffraction with bottom friction,the wave transformation processes in the ebb delta of Shuidong Bay,western Guangdong Province are simulated in this paper.The results show that the bottom friction induced by the platform of the ebb delta results in the obvious attenuation of the wave heights.The edge sand spits in both sides of the inlet could cause the refraction of incidence waves.And the variation of the limit of the surf zone are mainly related to the tidal staged under certain wave conditions.
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发布时间：2023-12-11 - 摘要：After investigating the present ecologic situation of the whole mangrove forest belt,the ecologic environment,the flora compose,the population distribution,the structure and physiognomy of community,community type,ecological series,succession of community,biomass,and ecologic change of mongrove and its cause were discussed in this paper.And the importance and urgency for protecting the whole of mangrove wetland ecosystem were expound.
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发布时间：2023-12-11
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