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Table of Content

    25 March 1990, Volume 5 Issue 1 Previous Issue    Next Issue
    Special Column:Celebration of the 70th Anniversary of IGSNRR, CAS
    FORMATION AND TRANSFORMATION OF RUNOFF IN ARID REGIONS OF CHINA
    Tang Qicheng
    1990, 5 (1):  1-10.  doi: 10.11849/zrzyxb.1990.01.001
    Abstract ( )   PDF (737KB) ( )   Save
    The so-called arid regions of China in this paper do not include the semiarid regions and only refer to such lands as Xinjiang, the Hexi corridor of Gansu, the Qaidam basin of Qin-ghai, northern Ningxia, western Inner Mongolia, etc.The runoff in China's arid regions shows horizontal zonality and vertical zonality, the latter being more obvious. The lofty mountain masses, such as Altai, Tianshan, Qilian, Kun-lun, Altun, Helan, ect., are capable of intercepting moist air currents to produce mere precipitation than that occurring on the surrounding plains. Therefore, from the viewpoint of runoff situation, the arid regions can clearly be divided into the belts of the runoff formation and those of the runoff disappearance. The runoff formation belts and the runoff disappearance belts in arid regions have fundamental difference in hydrological regime.The hydrological regime of the river and its evolution depend mainly upon the supply sources of the runoff. The diversity of the runoff supply sources is one of the hydrological cha-racteristilies in the arid regions. The melt water from the alpine ice and snow has great impact on the hydrological regime of the river.The groud water of the piedmont plain comes mainly from surface water, while the river water below the plain comes partly from ground water. Between the river water and the ground water exists a relation of mutual supply, i.e., mutual transformation.
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    AN APPROACH ON THE EXPLOITATION OF THE SWEET- WATER LAKE RESOURCE IN CHINA --TAKING THE DONG PING LAKE AS AN EXAMPLE
    Lin Wenpan, He Fanneng
    1990, 5 (1):  11-19.  doi: 10.11849/zrzyxb.1990.01.002
    Abstract ( )   PDF (598KB) ( )   Save
    This paper elaborates the functions of sweet water lakes in China. These include regulating the river flow, generating electricity, irrigation, and shipping. Taking the Dong Ping Lake as an example, the paper also discusses systematically the charateristics of the sweet-water labe resource (natural environment, physical and chemical properties, fish habitat, tourism environment) and their exbloitation situation. The Dong Ping Leke is divided into three levels. The habitat and ecosystemastic charateristics of each level are analysed seperately.The main problems of the sweet water lakes in China are: the shortage of water resources flowing into the lakes, the pollution by industrial effluent, the impediment to passages between rivers and lakes caused by hydraulic structures, the siltation due to flood detention, and so on. All these result in the deterioration of water habitat, the extinction of migratory species, the shrinkage of lake's body, etc.At last, the paper sets forward some countermeasures for tapping and administrating the Dong Ping Lake. These include designing a drainage plan for tapping the aquatidrresoures in the lake, enhancing soil and water conservation in the drainage basin, cleaning the silt on the bottom of the lake in a planned way, dredging the passage between the lake and the river, setting up more fishways, working out a project of water transport and irrigation worts which will benefit the habitats of aquatic animals and aquatic plants, designing an effecient scheme for exploiting the stagnant water resource, and so on.
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    THE BASIC CHARACTERISTICS OF NATURAL MINERAL SPRING WATER IN JILIN PROVINCE AND ITS EXPLOITATION STRATECY
    Zhang Bofu
    1990, 5 (1):  20-30.  doi: 10.11849/zrzyxb.1990.01.003
    Abstract ( )   PDF (656KB) ( )   Save
    The complex geological structure, the frequent activities of volcanos, and the strong neo-tectonic movement are the favourable conditions for the natural mineral spring water to form and emerge. The basic characteristics of the carbonated mineral spring water in the Chang-Bai Mountains are: the contents of CO2, and H2SiO3 are very large, the mineralization degree is very high, and it is rich in some trace elements such as Sr, Li, Zn, ect. The majority of the silicic acid mineral spring water contain Srand some contain Zn.The natural mineral spring water is widely distributed in Jilin Province. Its exploitation has many advangeous conditions such as rich resources, concentrated distrution, and the excellent quality of the water. The basic strategy for exploiting the mineral spring water includes overall planing, protecting resources, making rational exploitation, increasing advertisement, etc.The recent activities of volcanos and the active faults are the two mechanisms to form the mineral spring water. So volcano groups and active fault belts in the province are the most hopeful locations to find the mineral spring water.
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    ON THE MINERAL RESOURCE SYSTEM OF THE PANZHIHUA IRON AND STEEL BASE
    Chen Wanyong, Hou Kui
    1990, 5 (1):  31-41.  doi: 10.11849/zrzyxb.1990.01.004
    Abstract ( )   PDF (783KB) ( )   Save
    The Panzhihua Iron and Steel Base is located in a paleorift belt west of the middle section of the Kang-Dian axis. It is the complicated geological structures of the rift valley belt that makes the area have favourable conditions for mineralization. There is a complete range of types of mineral resources and the amounts of their reserves are great. The geological reserves of Titanium and Vanadium ores in Panzhihua are both the greatest in the country. Titanium ore is also the richest and Vanadium ore is the third richest in the world.The mineral resource system of the Panzhihua Iron and Steel Base consists of kernel resources (including iron ore and coking coal) and auxiliary raw material resources (including power coal, flux limestone, dolomite, refractory clay, magnesite ore, etc.). There is a pendulum-like transport system between Panxi and Liupanshui for kernel resources transportation, transporting iron ore from Panxi to Liupanshui and coking coal from Liupanshui to Panzhihua. The mineral resources system and pendulum-like transport system of Panzhihua Iron and Steel Base can basically meet its needs of mineral resources.The formation of these two kinds of systems makes it necessary that the second base of Panzhihua Iron and Steel must be built in Panxi area (from Dukou to Xichang), otherwise it will lead to grave consequences-
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    FORMATION, HAZARD AND EXPLOITATION OF THE HILLY WASTELANDS IN THE GANJIANG RIVER CATCHMENT
    Na Wenjun, Li Cuisen, Deng Xinan
    1990, 5 (1):  42-50.  doi: 10.11849/zrzyxb.1990.01.005
    Abstract ( )   PDF (693KB) ( )   Save
    There are about 2902×104 mu hilly wastelands in the Ganjiang River catchment. Of them, 2867 ×104 mu stretch out continuously. The other 35×104mu scatter as small plots (mainly on roadsides, banksides, ditchsiles and so on). The total area of the wastelands accounts for half of the area of the current woodlands, being slightly larger than the area of the current caltivated land. Three-fourths of the wastelands are distributed in red soil hilly ari'as (low hills 388×104mu, accounting for 13.5%; middle hills 1236 ×104 mu, 43.1%; high hills 605×104 mu, 21%; and moutainous areas 638×104mu, 22.3%). Most of them are distributed in the upper and midde reaches of the Garjiang River (upper reaches 60.2%, middle reaches 25.4%, lower reaches 14.4%).Exploiting and controlling these wastelands comprehensivly and utilizing them rationally are the most important keys for the peasants living in the upper and middle reaches to escape from poverty and become well-to-do.
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    SURPLUS AND DEFICIENCY OF WATER FOR MAIN CROPS AND THE RAINFED FARMING IN THE LOESS PLATEAU
    Yang Qinye, Li Gaoshe, Zhu Huiyi
    1990, 5 (1):  51-59.  doi: 10.11849/zrzyxb.1990.01.006
    Abstract ( )   PDF (582KB) ( )   Save
    Climatically, the Loess Plateau is located in a transitional zone between the subhumid and semiarid regions. Water shortage for crops is the key limiting factor in agricultural production. The precipitation and evaporation, the relation between the water demand of main crops and precipitation, and the moisture situation in farmland and the surplus and deficiency of water are discussed in this paper. Based on these, the conclusions are: (1) developing rain-fed farming should be a fundamental policy in agricultural production in the Loess Plateau; (2) apart from millet, other crops are greatly limited by local conditions; (3) the basic way for increasing the production of crops should be to raise the moisture content of the soil and to increase the utilization coefficient of available moisture. So, levelling land, increasing the application of fertilizers and so on should be adopted in order to realize the above purposes.
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    TO CALCULATE CHINA'S PLANT-CLIMATE PRODUCTIVE POTENTIALITIES BY "CHIKUZO MODEL
    Hou Guangliang, You songcai
    1990, 5 (1):  60-65.  doi: 10.11849/zrzyxb.1990.01.007
    Abstract ( )   PDF (363KB) ( )   Save
    The "Chikuzo Mathematical Model", namely NPP = 0.29 [exp(-0.216RDI2)] Rn, has been adopted by a Japanese agricultural meteorologist, Mr. Uchijima, for calculating the plant-climate productive potentiality. In this paper we use this model to calculate the distribution of China's plant-climate productive potentialities and compare the results with those calculated with the Miami and Thornthwaite Mathematical Model.
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    SYSTEM DECISION AND CROP LAYOUT --AN ANALYSIS OF THE AUTUMN CROP LAYOUT IN THE XUZHOU DISTRICT
    Li Quansheng
    1990, 5 (1):  66-73.  doi: 10.11849/zrzyxb.1990.01.008
    Abstract ( )   PDF (488KB) ( )   Save
    Crop layout is an important link in agricultural production, and it has direct influence on the efficiency of the utilization and transformation of agroecosystem resources, which include the material conditions, science and technology, climatic and biological resources, etc. This is due to the variability of agroecosystem resources, especially the year to year difference of the weather and climate factors. This paper aims at determining the optimum crop layout under various weather and climatic conditions on the basis of the year pattern forecast.
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    QUANTITATIVE ANALYSIS OF THE GRADIENT OF THE RESOURCE AND ECONOMY STRUCTURE IN THE HILLY AND MOUNTAINOUS AREA OF THE GANJIANG RIVER BASIN, JIANGXI PROVINCE
    Li Lanhai, Lui Houpei
    1990, 5 (1):  74-83.  doi: 10.11849/zrzyxb.1990.01.009
    Abstract ( )   PDF (643KB) ( )   Save
    This paper deals with the gradient of the resource and economy structure at the county level in the hilly and mountainous area of the Ganjiang River basin by means of the Principal Component Analysis (PCA). Firstly, an analysis of the data about the resource and economy structure of 35 counties is made. It shows that the systematical differences among the counties are caused by climatical conditions, terrain composition, and the level of intensive farming. The spacial distribution of these decisive factors is that they take the Jitai basin as a centre and change sucessively and gradually in all directions, Secondly, the whole hilly and mountainous area is divided into 6 districts on the basis of the systematical differences among the counties and their gradient of the resource and economy structure. And lastly, the authors offer an opinion on the resource development of the hilly and mountainous area of the Ganjiang River basin.
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    ON THE ABANDANCE AND FITNESS OF PRECIPITATION IN CHINA
    Huang Rangtang
    1990, 5 (1):  84-90.  doi: 10.11849/zrzyxb.1990.01.010
    Abstract ( )   PDF (372KB) ( )   Save
    In this paper, the abandance of precipitation in China is weighed by some factors such as the mean annual precipitation of the whole world, crop evapotranspiration, and the water requirment of crops. The fitness of precipitation in China is evaluted by the spatial and temporal distribution of precipitation, the stability of precipition and so on. And the influence of precipitation conditions on the exploitation of land resources is analysed from the standpoint of present economic conditions. Besides, the superiority and inferiority of China's precipitation conditions are compared with those of the comitries in Europe and America. The results show that the conditions and amount of precipitation in China are not so superior and abandant as those discribed by professor Hang Wanli.
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    A DEEP COGNITION OF CHINA'S WATER RESOURCES
    He Xiwu
    1990, 5 (1):  91-96.  doi: 10.11849/zrzyxb.1990.01.011
    Abstract ( )   PDF (414KB) ( )   Save
    The water resources in China possesses many characteristics. Besides some unfavourable facfors there are many advantages, such as good availability of the water resources, high utility rate of the river runoff, good conditions of the groundwater storage in short-water regions, relatively rich-water areas existing in poor-water regions, and inexhaustible sea water. Based on these iharalteristihs, we should promote what is benefirial and avoil what is harmful, and continually improve the water resources management so as to make the limited water resources capable to meet the needs of economic development and people's domestic life.
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