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zonality OF DISTRIBUTION OF PHYSICO-GEOGRAPHICAL ZONES IN CHINA

Chinese Geographical Science 1993年第4期3卷 22-39页

作者：蒋忠信 The Second Institute of Surveying and Designing Ministry of Railway Chengdu 610031 PRC

With the methods of regression analysis and trend surface analysis, taking the bottom and top lines of dark conifer forest, bottom line of permafrost and the snowline of the latest glaciation in China as examples, this paper discusses the zonality regulaties of the distribution of physico-geographical zones in China. (1) Latitude zonality obeys the mathematical model of normal frequency distribution, being approximate to descending straightly within the latitude of China. (2) Longitude zonality shows that the elevation of physico-geographical zone rises straightly with the distance to east coast. (3) The combination of latitude and longitude zonalities appears a plane inclining from SSW to NNE. The decline of physico-geographical zone resembles a semiellipse- sphere inclining from the Qinghai-Xizang (Tibet) Plateau to northeast China, reflecting the effect of relief. (5) Physico-geographical zonation depends on the combination of hydrothermal conditions. Thus the factors influencing the distribution

关键词： physi∞-geographical zone latitude zonality longitude zonality trend surface analysis

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Zonal Distribution of River Basin Erosion and Sediment Yield in China

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Chinese Science Bulletin 1994年第16期39卷 1356-1361页

作者：许炯心 Institute of Geography Academia Sinica Beijing 100101 PRC

China has a vast territory with almost all kinds of natural zones, where water erosion exhibits a great areal differentiation, with the sediment yield ranging from less than 100 t/km^2· a to more than 10000 t/km^2· ... 详细信息

关键词： river basin erosion and sediment yield zonality China.

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Zonal differences of runoff and sediment reduction effects for typical management small watersheds in China

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International Soil and Water Conservation Research 2013年第1期1卷 39-48页

作者： Qi Junyu Sun Liying Cai Qiangguo Faculty of Forestry and Environmental Management at the University of New Brunswick 28 Dineen DriveFredericonNB E3B 6C2Canada Key Laboratory of Water Cycle and Related Land Surface Processes Institute of Geographic Sciences and Natural Resources ResearchCASBeijing 100101China

In this particular study,99 typical managed small watersheds which representing five water erosion areas in China were selected to study zonality of Runoff Reduction Efficiency(RRE)and of Sediment Reduction Efficiency(SRE).The RRE is the ratio of Effect of Runoff Reduction(ERR)by soil and water conservation measure over management degree in a *** The SRE is the ratio of Effect of Sediment Reduction(ESR)by soil and water conservation measure over management degree in a *** of ah,statistical analysis was applied to test the zonal effects of RRE and SRE between different water erosion *** results showed that the mean RRE values in northern regions were significantly greater than those of southern regions;and the mean SRE values in northern regions were significantly greater than those in southern ***,the variation of RRE with runoff depth(H)was studied in direction of both latitude and longitude across regions influenced by East Asian ***,the variation of SRE with specific sediment yield(Y)was studied in direction of both latitude and longitude across regions influenced by East Asian *** results showed that RRE had the inverse variation trend as H in both latitude and longitude direction and SRE had the same variation trend as Y in both latitude and longitude ***,the variation of unit management area Runoff Reduction Rate(RRR)with H and RRE was studied in direction of both latitude and *** the variation of unit management area Sediment Reduction Rate(SRR)with Y and SRE was studied in direction of both latitude and *** was found that RRR had the similar variation trend as H in latitude direction and there was critical point around 37°N greater than which RRR began to be equal to H or even larger;RRR had the similar variation trend as H in longitude direction and there was a critical point around 109°E lees than which RRR began to equal to or greater than H;SRR had the simil

关键词： zonality Soil and water conservation Effects of runoff reduction Effects of sediment reduction

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The Application of the Concept of"Nearly Natural"Plant Community in the Optimization of Coastal Ecological Space

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Meteorological and Environmental Research 2021年第3期12卷 66-69页

作者： Zhen YE Yuyuan HUANG Jiahua DONG South China Institute of Environmental Sciences Ministry of Ecology and EnvironmentGuangzhou 510535China College of Agriculture and Biology Zhongkai University of Agriculture and EngineeringGuangzhou 510225China

The overexploitation of the natural environment caused by urbanization makes more and more natural and semi-natural plant communities gradually lack,which causes a lot of irreversible damage to the ***,it is very important to carry out ecological environment construction in all fields of urban *** this paper,based on theory and method of plant landscape construction under the concept of"nearly natural"plant community,through the investigation and analysis on plant species,distribution,and structural characteristics of plant community in Baguang District of Shenzhen,regional native plant species are summarized,and structural characteristics of original zonal plant community are *** research aims to provide a reference basis for creating a coastal plant landscape with subtropical marine climate for Baguang and even Lingnan,constructing near natural ecological park according to local conditions,forming the pattern well-coordinated with the local natural ecosystem,and carrying out protection of the regional ecological environment.

关键词： "Nearly natural"plant community Coastal space zonality Baguang of Shenzhen

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