南疆地区经济发展对荒漠化程度的影响研究

荒漠化程度的变化对南疆地区来说是生态系统退化的表现。应用NDVI数据，利用图像处理软件ENVI对南疆地区荒漠化程度进行分析，结果表明： 1952-1983年之间南疆地区荒漠化面积约增长11%，其中重度荒漠化面积约增14.21%左右，而中轻度荒漠化面积增7%~8%。1983-1993年荒漠化保持着基本稳定的状态。在21世纪初，即从2000年、2005年、2010年、2014年4期遥感数据解译分析结果来看， 2000年荒漠化总面积达到96.11×10⁴ km²，约占总面积的90.41%，其中严重荒漠化面积为72.93×10⁴ km²，重度荒漠化面积为15.76×10⁴ km²，中轻度荒漠化面积为7.42×10⁴ km²，到了2014年，荒漠化总面积达到95.31×10⁴ km²，比2000年下降1.24%，但严重中轻度荒漠化土地面积不断发生变化。通过分析发现，荒漠化程度变化主要是人类活动和自然因素共同作用所导致的。

Study of the social economic development impacting the desertification in southern Xinjiang

Ecosystem degradation intensifies the desertification in southern Xinjiang.In this paper,desertification in southern Xinjiang is analyzed by using the NDVI data through the support of ENVI software.The result shows that the area of desertification in southern Xinjiang had increased 11 percent from 1952 through 1983.Among them,the area of heavy desertification had increased approximately 14.21％,while the area of moderate and mild desertification had increased 7％ ～ 8％.The area of desertification had kept stationary from 1983 through 1993.At the beginning of the 21st century,the area of desertification reached 96.11 × 103 km2,which was calculated from the remote sensing data interpretation in 2000.It was accounting for 90.41％ of the total land area,of which the area of heavy desertification and moderate-mild desertification were,respectively,157.6 × 103 km2and 74.2 × 103 km2.The area of desertification reached 953.1 × 103 krn2 in 2014,which had shrunk 1.24％ as compared with that in 2000,while heavy moderate-mild desertification area had changed constantly.According to the deeply observing and searching of predecessors,the change of desertification should be ascribe to human activities and natural factors.