陕北长城沿线地区土地退化态势分析

刘彦随,Jay Gao

Trend Analysis of Land Degradation in the Zone along the Great Wall in Northern Shaanxi

LIU Yansui, Jay Gao

地理学报 . 2002, (4): 443 -450 . DOI: 10.11821/xb200204009