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| An ecogeographical regionalization for biodiversity in desert ecosystem of China |
| Wang Xijing1, Wu Xiuqin1,2, Zhang Yuqing1,2, Wu Bin1,2, Ma Qing1, Liu Bo1 |
| (1. College of Soil and Water Conservation, Beijing Forestry University,100083, Beijing; 2. Yanchi Research Station,751500, Yanchi, Ningxia: China) |
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Abstract Ecogeographical regionalization is the basis for spatial differentiation of biodiversity research. In view of the principle of international ecogeographical regionalization, this study has applied experienced assessment and GIS method and based on some ecogeographical attributes limited to the distribution of plant and vegetation, including climatic factors, such as monthly mean temperature, annual average temperature; annual precipitation, moisture index, drought index; biological factors such as vegetation types, vegetation division types, florisitic types, fauna types, abundance of plant species, genus and endemic genus; soil factors such as soil types, soil organic matter; topographical factors as longitude, latitude and altitude etc. Based on the regionalization principle and ecogeographical attributes, the desert ecosystem was stratified into discrete geographical units of uniformity at 3 levels: wet district, natural area, type area. Based on this 3-class-system, the desert ecosystem was divided into 67 special type areas further.
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Received: 20 February 2012
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