摘要
Abstract
Based on field investigation and previous studies, established in Guiyang-Nanming county stony desertification land remote sensing interpretation symbol library, and under the support of geographic information system, the visual interpretation of the data in 2005 and SPOT image in 2011,analysis of the area in the recent 5 years the land stony desertification spatial and temporal changes and reasons. The results show that: the improved 2.3 hm2, a slight improvement in type 285.2hm2, type 9381.2hm2, type 2.2hm2 degradation. Changes of stony desertification in karst area of the total area of 8970.7hm2, including: the mild desertification increased 333.3hm2, reduce 2632.1hm2 moderate stony desertification, severe desertification reduced 38.7hm2, very severe desertification reduced 4.7hm2 the potential desertification reduced 1744.4hm2, non desertification increased by 4217.5hm2.The main natural factors and human factors of land desertifi-cation changes caused by natural factors, human factors accounted for 61.92%, accounted for 38.08%.关键词
贵阳市南明区/石漠化/动态变化/原因分析Key words
Guiyang-Nanming county/stony desertification/dynamic change/cause analysis
