| 基于荒漠化差值指数(DDI)的精河流域荒漠化研究 |
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| 引用本文： | 毋兆鹏,王明霞,赵晓.基于荒漠化差值指数(DDI)的精河流域荒漠化研究[J].水土保持通报,2014(4):188-192. |
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| 作者姓名： | 毋兆鹏 王明霞 赵晓 |
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| 作者单位： | 新疆师范大学地理科学与旅游学院, 新疆乌鲁木齐 830054;新疆干旱区湖泊环境与资源重点实验室, 新疆乌鲁木齐 830054;新疆师范大学地理科学与旅游学院, 新疆乌鲁木齐 830054;新疆师范大学地理科学与旅游学院, 新疆乌鲁木齐 830054 |
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| 基金项目： | 新疆维吾尔自治区自然科学基金"艾比湖流域精河绿洲土地荒漠化时空动态演变研究"(2013211A022) |
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| 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。
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| 关 键 词： | 反照率-植被指数空间 荒漠化差值指数(DDI) 荒漠化 精河流域 |
| 收稿时间： | 9/4/2013 12:00:00 AM |
| 修稿时间： | 2013/9/10 0:00:00 |
A Study on Desertification Based on Desertification Difference Index in Jinghe Watershed |
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| WU Zhao-peng,WANG Ming-xia and ZHAO Xiao.A Study on Desertification Based on Desertification Difference Index in Jinghe Watershed[J].Bulletin of Soil and Water Conservation,2014(4):188-192. |
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| Authors: | WU Zhao-peng WANG Ming-xia and ZHAO Xiao |
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| Institution: | Institute of Geography and Tourism Science, Xinjiang Normal University, Urumqi, Xinjiang 830054, China;Xinjiang Key Laboratory of Lake Environment and Resources in Arid Zone, Urumqi, Xinjiang 830054, China;Institute of Geography and Tourism Science, Xinjiang Normal University, Urumqi, Xinjiang 830054, China;Institute of Geography and Tourism Science, Xinjiang Normal University, Urumqi, Xinjiang 830054, China |
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| 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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| Keywords: | Albedo-NDVI space desertification difference index(DDI) desertification Jinghe watershed |
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