地理学报(英文版)
地理學報(英文版)
지이학보(영문판)
JOURNAL OF GEOGRAPHICAL SCIENCES
2003年
2期
217-224
,共8页
刘彦随%张晓平%李宪文%Jay GAO
劉彥隨%張曉平%李憲文%Jay GAO
류언수%장효평%리헌문%Jay GAO
land degradation%land desertification%changes of land use%Yulin district
Yulin district is located in the transitional zone between Mu Us Desert and Loess Plateauof northern Shaanxi Province, thus it is particularly vulnerable to degradation due to its fragileecosystem and intense human activities there. The purpose of this study is to explore the mechanism,process and driving force of land degradation in area with vulnerable eco-environment within thecontext of increasing population and intensifying human economic activities, and then find out thepatterns and countermeasures of how to control them using the economic and technological ways. Indetail, this study includes three main sections: the first section analyzes the mechanism, causes andcharacteristics of land degradation, which can be achieved by the typical field investigations andsystematical analysis within the regional natural, social and economic context. Based on thetechnologies of remote sensing and GIS, and combined with the modeling methods, the secondsection reveals the change characteristics of land use and its driving force from 1990 to 2000; As tothe third section, feasible countermeasures of how to prevent the degradation and rehabilitate theregional ecology are proposed, which are studied from the perspective of harmony between natureand economy, and the conception of regional sustainable development.