A Study on Desertification Based on Desertification Difference Index in Jinghe Watershed

WU Zhao-peng; WANG Ming-xia; ZHAO Xiao

doi:10.13961/j.cnki.stbctb.2014.04.051

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A Study on Desertification Based on Desertification Difference Index in Jinghe Watershed

- A Study on Desertification Based on Desertification Difference Index in Jinghe Watershed
- Bulletin of Soiland Water Conservation Vol. 33, Issue 4, Pages: 188-192(2014)
- 作者机构：
  
  1. 新疆师范大学地理科学与旅游学院,新疆,乌鲁木齐,830054
  2. 新疆干旱区湖泊环境与资源重点实验室,新疆,乌鲁木齐,830054
- 作者简介：
- 基金信息：
- DOI：10.13961/j.cnki.stbctb.2014.04.051
  CLC：
- Published：2014
- 稿件说明：
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WU Zhao-peng, WANG Ming-xia, ZHAO Xiao. A Study on Desertification Based on Desertification Difference Index in Jinghe Watershed[J]. Bulletin of Soiland Water Conservation, 2014, 33(4): 188-192.
DOI：

WU Zhao-peng, WANG Ming-xia, ZHAO Xiao. A Study on Desertification Based on Desertification Difference Index in Jinghe Watershed[J]. Bulletin of Soiland Water Conservation, 2014, 33(4): 188-192. DOI： 10.13961/j.cnki.stbctb.2014.04.051.

摘要

利用精河流域1990和2011年TM-5影像数据

基于荒漠化差值指数(DDI)构建了精河流域反照率(Albedo)-植被指数(NDVI)特征空间下的荒漠化遥感监测模型。结果表明

1990-2011年精河流域土地荒漠化类型转化以恶化为主;年蒸发量和年均温是导致研究区荒漠化面积增加的主要自然因素

该区也存在潜在风蚀荒漠化风险;由气候变化导致的荒漠化发展

近些年来正被政府的积极措施部分抵消

但人口压力大

水资源低效利用等问题仍是未来荒漠化防治过程中需要解决的重点问题。

Abstract

Using the TM-5 remote sensing data in 1990 and 2011 in Jinghe watershed

a model to remote monitor desertification under the Albedo-NDVI scatter plot of Jinghe watershed was built based on desertifition difference index(DDI). The results showed that the desertification degree became severity from 1990 to 2011 and the predominant natural factors were the annual evaporation and temperature. Moreover

there are many potential risks of wind-erosion desertification in study area. Although the active steps taken by government were counterbalancing desertification caused by climate change in recent years

the reversion of desertification was slowed down by the population pressure

the inefficient utilization of water resources

and human dimensions which needed to be overcome in the prevention and control of desertification in Jinhe watershed in the future.

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