榆林地区土地利用/覆盖时空变化及其对生态脆弱性的影响
杨强,王涛
Spatial-temporal variation of land use/cover and the analysis of its effect on ecological vulnerability in Yulin City of Shaanxi Province
YANG Qiang, WANG Tao
南京林业大学学报(自然科学版) . 2015, (02): 79 -83 .  DOI: 10.3969/j.issn.1000-2006.2015.02.014