【作者】 晁俊姣； 黄国鲜； 周建军；

【Author】 CHAO Jun-jiao~1 HUANG Guo-xian~1 ZHOU Jian-jun~1 (1.Department of Hydraulic and Hydropower Engineering,Tsinghua University,Beijing 100084,China)

【机构】 清华大学水利水电工程系；

【摘要】 为了更好地管理三峡库区消落带,根据数字地面模型的原理,在1：5000、1：25万的数字地形资料和1：10万的全国土地利用资料的基础上,经过数据预处理、坐标转换、空间分析等,初步建立三峡库区消落带数字地面模型．该模型包括地形、行政区划、土地利用等内容．本模型计算得到的三峡库容曲线和三峡公司提供的库容曲线基本吻合,变化趋势一致,表明该模型具有一定的合理性和正确性,可以用来统计分析消落带的分布规律．根据本文统计, 三峡水库的消落带呈条带状分布,主要分布于开县、万县、忠县、涪陵、丰都、重庆市区等地,在重庆市区和开县的消落带面积相对较大,分别达到106km~2和74．5km~2．更多还原

【Abstract】 In order to manage the recession zone of the Three-Gorges Reservoir (TGP) better,a Digital Terrain Model (DTM) is established based on different spatial and attributed data with different spatial scales,including 1:5,000,1:250,000 for land elevations and 1:! 00,000 for the land use.In addition,Data pre-processing,spatial analysis and coordinates transforming are applied before the calculation.This model includes layers of land elevation,regionalism,land use,etc.The verification by comparing the elevation-capacity curve derived from the DTM with that from the Three-Gorge Company shows the precision of the DTM is reasonable good.Based on the model,the areas of the recession zone are calculated,and the computation shows that the long and narrow recession zone mainly is distributed in Kaixian,Wanxian,Zhongxian,Fuling,Fengdu, Jiangbei,Changshou,Wulong etc.,especially in Kaixian and ChongQing,which contain 74.5km~2 and 106km~2 respectively.更多还原