| 基于改进适度指数法的流域流水网阈值确定研究 |
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| 引用本文： | 吴泰兵,夏达忠,张行南. 基于改进适度指数法的流域流水网阈值确定研究[J]. 水电能源科学, 2011, 29(4) |
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| 作者姓名： | 吴泰兵 夏达忠 张行南 |
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| 作者单位： | 1. 河海大学水文水资源学院,江苏南京,210098
2. 河海大学水文水资源学院,江苏南京210098;河海大学水资源高效利用与工程安全国家工程研究中心,江苏南京210098 |
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| 基金项目： | “十一五”国家科技支撑计划基金资助项目(2008BAB29B08-02); 国家自然科学基金资助重点项目(41030636);国家自然科学基金资助项目(50879017) |
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| 摘 要： | 针对集水面积阈值为提取河网的关键参数,提出了采用改进的适度指数法确定理想的集水面积阈值,并与常用的河网密度法进行了比较,以多营坪流域为例完成了河网水系提取分析。结果表明,该方法提取的水系与蓝线水系拟合精度较好,优于河网密度法提取的水系。
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| 关 键 词： | DEM 分布式水文模型 改进的适度指数法 集水面积阈值 河网密度 |
Identification of Critical Contributing Area Based on Improved Fitness Index Method |
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| WU Taibing,XIA Dazhong,ZHANG Xingnan. Identification of Critical Contributing Area Based on Improved Fitness Index Method[J]. International Journal Hydroelectric Energy, 2011, 29(4) |
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| Authors: | WU Taibing XIA Dazhong ZHANG Xingnan |
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| Affiliation: | WU Taibing1,XIA Dazhong1,2,ZHANG Xingnan1,2(1.College of Hydrology and Water Resources,Hohai University,Nanjing 210098,China,2.National Engineering Research Center of Water Resources Efficient Utilization and Engineering Safety,China) |
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| Abstract: | The critical contributing area is a critical parameter for extracting drainage networks.This paper applies the improved fitness index methods to identify the critical contributing area and compares with drainage network density method.And then the method is used to extract the channel network of Duoyingping watershed.The results show that the improved fitness index methods is reasonably close to the reality,which is superior to drainage network density method. |
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| Keywords: | DEM distributed hydrological model improved fitness index method drainage area threshold river network density |
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