国土资源遥感Issue(4)：108-114,7.
丹江口水库消落区土地覆被空间格局分析
The Spatial Pattern of Landcover in the Drawdown Area of Danjiangkou Reservoir
摘要
Abstract
In this paper, the location of the submerging area at different water levels (150 m,160 m,170 m and 172 m) in Danjiangkou reservoir basin was detected based on the DEM data,and the landcover below 172 m level was obtained by using object - oriented classification approach based on RapidEye and Landsat - 5 TM data. The authors analyzed not only the spatial patterns of the landcover in the drawdown areas but also the impact factors. The results show that the acreage of the drawdown area at 150 - 160 m, 160 - 170 m and 170 - 172 m level is 232.0 km2,242.6 km2 and 43.1 km2 respectively. The acreage of the cultivated land is the largest, accounting for about 50% in every drawdown area. In addition,the acreage of the bare land is larger at the low water level,while that of the forest is larger at the high water level. Dynamic scheduling and slope constitute the impact factors on the spatial pattern of landcover. Both have a significant impact on the distribution of landcover in the low elevation region, while the slope has a significant impact on the distribution of landcover in the high elevation region.关键词
丹江口水库/消落区/土地覆被/遥感/RapidEyeKey words
Danjiangkou reservoir/ Drawdown area/ Landcover/ Remote sensing/ RapidEye分类
信息技术与安全科学引用本文复制引用
李伟萍,曾源,张磊,尹锴,袁超,吴炳方..丹江口水库消落区土地覆被空间格局分析[J].国土资源遥感,2011,(4):108-114,7.基金项目
中国科学院战略性先导科技专项(编号:XDA05050108)和国务院南水北调项目“利用遥感技术对南水北调中线水源区生态环境变化的监测研究”共同资助. （编号:XDA05050108）
