首页 | 本学科首页   官方微博 | 高级检索  
     检索      

中国土地沙漠化、水土流失和盐渍化的原因和驱动力:总体分析
引用本文:郭然,王效科,欧阳志云,刘国华,段晓男.中国土地沙漠化、水土流失和盐渍化的原因和驱动力:总体分析[J].自然资源学报,2004,19(1):119-127.
作者姓名:郭然  王效科  欧阳志云  刘国华  段晓男
作者单位:中国科学院生态环境研究中心系统生态重点实验室,北京100085
基金项目:中国科学院知识创新工程项目,国土资源部科技攻关项目
摘    要:论文收集了102篇沙漠化、79篇水土流失和64篇盐渍化的案例研究(共245篇),运用总体分析方法,把造成3种生态环境问题的因素归结为四类原因(农业扩张、资源利用、基础设施建设和自然因素)和五类驱动因子(经济、制度、技术、文化和人口)。分析结果表明,生态环境问题绝大多数由多因子所引起;在原因层面上,对沙漠化、水土流失和盐渍化案例影响最频繁的因子分别是农业扩张因子(92%)、资源利用因子(90%)和自然因素(86%);从驱动因子的层面上看,对沙漠化、水土流失和盐渍化案例影响最频繁的都是经济因素,影响频率分别为86%、81%和89%;总体来看,在发生生态环境问题的区域中,往往以经济因素的影响最为常见(85%),其次为技术(69%)和人口因素(62%)。因此,不适当地发展经济是造成我国沙漠化、水土流失和盐渍化日益严重的重要原因。

关 键 词:总体分析方法  生态环境问题  原因  驱动因子  
文章编号:1000-3037(2004)01-0119-09
收稿时间:2003-06-08
修稿时间:6/3/2003 12:00:00 AM

Causes and drivers of desertification,soil erosion and salinization in China:a meta-analysis
GUO Ran,WANG Xiao-ke,OUYANG Zhi-yun,LIU Guo-hua,DUAN Xiao-nan.Causes and drivers of desertification,soil erosion and salinization in China:a meta-analysis[J].Journal of Natural Resources,2004,19(1):119-127.
Authors:GUO Ran  WANG Xiao-ke  OUYANG Zhi-yun  LIU Guo-hua  DUAN Xiao-nan
Institution:Systems Ecology Key Laboratory,Research Center for Eco-Environmental Sci ences,CAS,Beijing100085,China
Abstract:Since the proposition of meta-analysis by psychologists,it has b een considered as a ve-ry useful method for synthesizing the research results and recently it has also been widely used in ecologic study.This paper consists of245cases,of which102cases on desertification,79cases on soil loss a nd64cases on salinization.Using meta-analysis method,four clusters of prox imate causes(namely,agricultural expansion,resource utilization,infrastructu re extension and natural factors)and five sorts of driving forces(namely,econ omic,policy&;institutional,technolog-ical,cultural and demographic factors) are identified to be accountable for the three environment-al problems .As a result,the paper found out that most of the three problems were caused by mul tiple factors.At the proximate level,the most frequent causes were agricultu ral expansion for desertification(92%),resource utilization for soil loss (90%),and natural factors for salinization(86%),respectively.At th e underlying level,the most frequent factor was economic factor for all the th ree problems,the frequency was86%,81%and89%.On the whole,multiple f actors were omnipresent in the environmentally degraded area of China,with eco nomic factor being the most frequent factor(85%),following with technolog ical factor(69%)and demographic factor(62%).
Keywords:meta-analysi s  proximate causes  driving forces
本文献已被 维普 万方数据 等数据库收录!
点击此处可从《自然资源学报》浏览原始摘要信息
点击此处可从《自然资源学报》下载免费的PDF全文
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号