Soil Erosion by Wind in Aibi Lake and Surrounding Areas Based on QuickBird Image

CUI Long; CHEN Ping; ZHANG Hong-zhong; DONG Wen-ming; HUANG Jing

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Soil Erosion by Wind in Aibi Lake and Surrounding Areas Based on QuickBird Image

- Soil Erosion by Wind in Aibi Lake and Surrounding Areas Based on QuickBird Image
- Bulletin of Soiland Water Conservation Vol. 32, Issue 5, Pages: 60-63(2013)
- 作者机构：
  
  1. 新疆农业大学水利与土木工程学院,新疆,乌鲁木齐,830052
  2. 新疆水利厅头屯河流域管理处,新疆,昌吉,831100
- 作者简介：
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- Published：2013
- 稿件说明：
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CUI Long, CHEN Ping, ZHANG Hong-zhong, et al. Soil Erosion by Wind in Aibi Lake and Surrounding Areas Based on QuickBird Image[J]. Bulletin of Soiland Water Conservation, 2013, 32(5): 60-63.
DOI：

CUI Long, CHEN Ping, ZHANG Hong-zhong, et al. Soil Erosion by Wind in Aibi Lake and Surrounding Areas Based on QuickBird Image[J]. Bulletin of Soiland Water Conservation, 2013, 32(5): 60-63. DOI：

摘要

近年来，艾比湖湖面发生严重萎缩，造成湖泊大面积裸露，为沙尘暴提供了大面积沙源。通过对高分辨率QuickBird影像数据的处理，分析了艾比湖湖域的风蚀现状。在湖岸周边强度以上的风蚀面积约占63%，主要分布在无植被覆盖的东部和西部；微度风蚀和中度风蚀面积约占37%，主要分布在有植被覆盖的南北两岸。湖泊裸露的干涸湖底，位于湖泊的西北部，面积达430km

。影像的色调、形状和纹理变化上反映了干涸湖底的地貌形态和风系的方向。结合实地测量数据的分析发现，湖泊西北向东南方向形成宽约4.5km，长约10km，坡度为1/5000的带状坡面，为沙尘暴的发生创造了有利的条件。要改善艾比湖流域生态环境，主要依靠增加入湖水量以减小干涸湖底的沙源，达到控制艾比湖地区风蚀的目的。

Abstract

With the heavily shrink of the Aibi Lake level in recent years

a large area of the lake has become bare land which provides sand for sandstorm.The wind erosion status of the Aibi Lake is analyzed through the process of high resolution QuickBird image data.The strong wind erosion area occupies 63% of the total lake area and is mainly distributed in the east and west part of the lake without vegetation cover.The micro-degree and moderate wind erosion areas occupy 37%of the total area and are mainly distributed in the south and north part of the lake with vegetation cover.The area of bared lake bottom is 430 kmz and is located in the northwest of the Aibi Lake.From the hue

shape and texture changes of image

the landform and wind direction of bared lake bottom are reflected.From the measured data analysis

the band sloping area with a width of 4.5 km

length of 10 km and 1/5000 gradient forms in northwest to southeast direction

creating favorable condition for forming sandstorm.In order to improve the ecological environment of the Aibi Lake basin

the main method adopted is increasing the input water of the lake to reduce bared lake bottom and control wind erosion.

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