| 基于遥感、DEM技术的西汉水水土流失变化分析 |
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| 引用本文： | 陈晖,张红,徐高洪,周军其,戴明龙. 基于遥感、DEM技术的西汉水水土流失变化分析[J]. 人民长江, 2006, 37(12): 7-8 |
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| 作者姓名： | 陈晖 张红 徐高洪 周军其 戴明龙 |
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| 作者单位： | 长江水利委员会,水文局,湖北,武汉,430010;武汉大学,遥感信息工程学院,湖北,武汉,430070 |
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| 基金项目： | 国家重点基础研究发展计划(973计划) |
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| 摘 要： | 嘉陵江西汉水中上游属黄土梁峁区,是长江的主要产沙区之一,亦是长江水土保持重点治理区域之一.基于MODIS及ETM遥感影像数据进行信息提取,结合流域DEM、同步降水、径流、泥沙、水土保持及野外调查资料,建立嘉陵江西汉水镡家坝以上流域土壤流失量评价模型,量化分析1989年开展水土保持治理前后嘉陵江西汉水流域水土流失变化规律.在构建流域土壤流失量评价模型中引入较敏感的径流因子,提高了拟合成果与实测估算值的吻合度及模型的适用性.
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| 关 键 词： | 水土流失 M-USLE模型 遥感 DEM |
| 文章编号： | 1001-4179(2006)12-0012-04 |
| 修稿时间： | 2006-09-28 |
Analysis of soil and water loss variation based on remote sensing and DEM technology |
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| CHEN Hui ZHANG Hong XU Gao-hong ZHOU Jun-qi DAI Ming-long. Analysis of soil and water loss variation based on remote sensing and DEM technology[J]. Yangtze River, 2006, 37(12): 7-8 |
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| Authors: | CHEN Hui ZHANG Hong XU Gao-hong ZHOU Jun-qi DAI Ming-long |
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| Abstract: | The middle and upper area of the west Hanshui river basin in the Jialing river belongs to loessial hill land,is one of main sediment-yielding areas of the Yangtze river,and also one of the key harness areas for soil and water conservation of the Yangtze river basin.Based on taking information from MODIS and ETM remote sensing images and in combination with information about the basin DEM,simultaneous precipitation,runoff,sediment,soil and water conservation,and related field data,a soil loss assessment model for the west Hanshui river basin upstream of the Chanjia dam in the Jialing river basin was developed to quantify and analyze the soil and water loss variations of the west Hanshui river basin before and after the soil and water conservation harness started in 1989.In the development of the soil loss assessment model,a relatively sensitive runoff factor was introduced to improve the conformity between fitting results and observed estimates and the adaptability of the model. |
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| Keywords: | DEM |
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