我国荒漠生态系统生物多样性生态地理分区  

An ecogeographical regionalization for biodiversity in desert ecosystem of China

作　　者：王玺婧[1] 吴秀芹[1,2] 张宇清[1,2] 吴斌[1,2] 马青[1] 刘博[1] 

机构地区：[1]北京林业大学水土保持学院,北京100083 [2]宁夏盐池荒漠生态系统定位研究站,宁夏盐池751500

出　　处：《中国水土保持科学》2012年第5期1-8,共8页Science of Soil and Water Conservation

基　　金：林业公益性行业科研专项经费项目课题"荒漠生态系统生物多样性保育功能监测与评估技术"(201004010-04)

摘　　要：为了更好地服务于生物多样性监测及价值评估研究,采用自上而下逐级划分、专家集成和GIS模型定量结合的方法,依据国际上普遍遵循的生态地理区划原则,将过去研究中各区划方案和相关图件作为分区过程的辅助材料及校正材料,利用各种生态地理因子指标,包括气候指标月平均气温、年均温,与需热性有关的植物生长季积温,水分指标湿润指数及干燥度,植被指标如植被类型、植被区划类型、植物区系类型、动物区系类型等,土壤指标土壤类型、土壤有机质等,地形和地貌特征,进行了中国荒漠生态系统生物多样性生态地理分区。根据相应区划原则和指标体系,荒漠生态系统采用干湿区、自然区和类型区3级区划制。分区过程中遵循综合分析和主导因素相结合的原则,主要体现对生物多样性保育的服务,将荒漠生态系统划分为67个类型区。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.

关 键 词：生物多样性 生态地理分区 荒漠生态系统 生物多样性保育 干旱区 

分 类 号：Q16[生物学—普通生物学]