文献类型：期刊文献

中文题名：三江源地区土壤保持功能空间分析及其价值评估

英文题名：The spatial analysis of soil retention function in Sanjiangyuan region and its value evaluation

作者：刘敏超[1] 李迪强[1] 温琰茂[2] 栾晓峰[1]

第一作者：刘敏超

机构：[1]中国林业科学研究院森林生态环境与保护研究所;[2]中山大学环境科学与工程学院

年份：2005

卷号：25

期号：5

起止页码：627-631

中文期刊名：中国环境科学

外文期刊名：China Environmental Science

收录：CSTPCD;;EI(收录号：2005469481589);Scopus(收录号：2-s2.0-27744492620);北大核心:【北大核心2004】；CSCD:【CSCD2011_2012】；

基金：国家科技部社会公益项目(2001DIB100058);国家林业局自然保护区社会经济与生态价值评估项目

语种：中文

中文关键词：三江源地区;土壤侵蚀;土壤保持;空间分析;通用土壤流失方程

外文关键词：Sanjiangyuan region; soil erosion; soil retention; spatial analysis; universal soil loss equation

分类号：X171.1

摘要：在地理信息系统的支持下,利用已有的资料,将三江源地区划分为1km×1km的栅格,并以栅格为单元对其生态系统土壤保持功能进行分析和计算.运用通用土壤流失方程研究了该地区生态系统土壤侵蚀量和土壤保持量及其空间分布,并利用市场价值法、机会成本法和影子工程法评估了土壤保持功能的价值.研究表明,三江源地区生态系统土壤保持总量为1.04×109t/a,其价值总计为1.25×109元/a.其中保持土壤养分的经济价值为1.10×109元/a,减少废弃土地的经济价值为1.64×107元/a,减少泥沙淤积的经济价值为1.34×108元/a.
Sanjiangyuan region was divided into 1km×1km grid utilizing obtained data under the support of geographical information system and using the grid as unit to analyze and calculate the soil retention function of its ecosystem. The amounts of soil erosion and retention and their spatial distribution of the region were studied utilizing universal soil loss equation; and the techniques of market value, opportunity cost and shadow engineering were utilized to evaluate the value of soil retention function. The total amount of soil retention in the ecosystem of Sanjiangyuan region was 1.04×10^9t/d; its total value was 1.25×10^9yuan/a, in which the economic values of relenting soil nutrition, reducing abandoned land and reducing silt deposition were 1.10× 10^9yuan/a, 1.64×10^7yuan/a and 1.34×10^8yuan/a respectively.