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中文
Table of Content
10 April 1983, Volume 2 Issue 02
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ELEMENTARY ANALYSIS OF ECOLOGICAL FUNCTIONS OF SOILS IN GONGGA MOUNTAIN AREA
Yu Dafu
1983, (2): 5-10.
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Understanding the ecological functions of soil is one of the fandamental prerequisites for the reasonable utilization of soil resources.In mountainous area,ecological functions of soil exhibit a characteristic of remarkable vertical differentiation, and this is the starting point of investigating mountainous soil ecosystem and exploiting and utilizing mountainous soil resources.In this paper, an elementary approach to the ecological functions of soil and their characteristics of vertical differentiations in Gongga mountain area is made.
ECOLOGICAL DISTRIBUTION OF RODENTS IN QINLING AND DABASHAN REGION
Wang Tingzheng
1983, (2): 11-13,65.
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Based on the on- the-spot investigation,the ecological distribution of rodents in Qinling and Dabashan regions was determined.it is shown that owing to the variations of elevation and natural environment,there is a definite variation pattern in the composition and amount of species of rodents in various vertical zones and habitats.Only mastered their distribution characteristics and variation patterns,can it be possible to better control and wipe out some rodents in forests and farmlands.
STUDY ON THE REGENERATION OF ORDOS SAGEBRUSH COMMUNITY
Zhang Qiang
1983, (2): 14-19.
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Through the stady of the regeneration of the main ccmponent of Ordos Sagebrush community—Ordos Sagebrush population, this paper discusses the basic law of the regeneration of this community.
BACKGROUND VALUES OF TRACE ELEMENTS IN CHINESE HUMAN HAIRS
Sheng Shijun , Zhang Guilan, Yao Shurong, Cheng Yanao, He Zhendong, Wu Guichun
1983, (2): 20-22,66.
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In this paper, the average contents of 14 trace elements, i.e. Cu, Zu, Pb, Sr, Ba. Fe, Mn, B, Mo, Cr, Ca, Mg, P, Si in hairs of healthy male children living in some regions of China are provided.They may be regarded as the important data about the background values on the investigation of hair-chemical ecology.
ON THE EXPLOITATION OF NATURAL RESOURCES AND THE MAINTENANCE OF ECOLOGICAL EQUILIBRIUM IN XISHUANGBANNA FROM THE VIEW POINT OF VARIATION OF SOIL FERTILITY
Li Yikun
1983, (2): 25-29.
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In this paper,the influence of land reclamaticn metheds on soil fertility is discussed.It is shown that rational land reclamation and plantation of rubber tree and other tropical economic forests will make good resalts in maintaining soil fertility and ecological equilibrium of this region.
MAKE REALIGNMENT OF OUR LANDS FOR THE BENEFIT OF THE PEOPLE——ON THE SERIOUS CONSEQUENCES OF WATER AND SOIL EROSION IN THE YANGTZE RIVER BASIN
Li Shiju
1983, (2): 30-34.
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Based on the investigation of some major water and soil eroded areas in the Yangtze River Basin in 198t, it is indicated by the author that the problem of water and soil erosion in this basin is more serious today than 1950s'. Therefore, an appeal is made to different .quarters for the necessity of taking resolute measures rapidly to prevent another arbitrary cuttings of limited amounts of trees. Otherwise, the danger of the Yangtze River being become a second Yellow River might be a fact before long.Besides these, some suggestions for the control of water and soil erosion in this basin are also put forward to the departments concerned for their studying and putting into effect.