Based on the basin river extraction methods of field measurements and large-scale topographic map, using digital GIS and DEM data extraction is more convenient and efficient. Based on 3D Analysis and Hydrologic Model of ArcGIS, the basin river DEM digital extraction is researched under the condition of mountainous terrain. The results show that the extraction of basin river is a total length of 350.05 km in the study area, especially large and medium-sized river length that deviation is only within 7.5%. Moreover, the extraction results are optimized, the accuracy influence of different grid number andthreshold value to the extraction are analyzed, and it isfound that the triple polynomial function is moresuitable for the relationship between the grid number and distance error.Hydrological information such as the river length, junction area and branch number is calculated, and mathematical function fitting is used. It is concluded that the threshold value is set to 12 000, the water extraction is most consistent with the actual effect of basin river. The digital extraction method and optimization of mountain basin river can not only provide technical support and reference for the extraction, but also offer scientific guidance for the difference analysis between the digital extraction and measured one.
Key words
DEM data /
basin river /
grid number /
threshold value
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References
[1]徐宗学,程磊.分布式水文模型研究与应用进展[J].水利学报,2010,41(9):1 009-1 017．
[2]李辉,代侦勇,张利华,等.利用数学形态学的遥感影像水系提取方法[J].武汉大学学报信息科学版,2011,36(8):956-959.
[3]Callaghan F,Mark D M. The extraction of drainage networks from digital elevation data[J]. Computer Vision, Graphics and Image Processing, 1984,28:323-344.
[4]孙庆艳,余新晓,胡淑萍,等.基于ArcGIS下 DEM 流域特征提取及应用[J].北京林业大学学报,2008,30(2):144-147.
[5]魏国,姜海.GIS环境下基于DEM的流域分析[J].中国农村水利水电.2006(10):12-16.
[6]郑子彦,张万昌,邰庆国,等.基于DEM与数字化河道提取流域河网的不同方案比较研究[J].能源科学,2009,31(10):1 730-1 739.
[7]XU X L,ZHUANG D F.Automated Extraction of Drainages in China Based on DEM in GIS Environment[J].Geoscience and Remote Sensing Symposium,2003,5:3 344-3 346.
[8]李艳红.新疆艾比湖流域水资源承载力研究[D].上海:华东师范大学,2006.
[9]王中根,刘昌明,吴险峰.基于 DEM 的分布式水文模型研究综述[J].自然资源学报,2003(18):168-173.
[10]孔凡哲,李莉莉.利用DEM提取河网时集水面积阈值的确定[J].水电能源科学,2005,23(4):65-67.
[11]孙爱立,余钟波,杨传国,等．我国水系提取阈值影响因素分析[J].水利学报，2013,44(8):901-908.
[12]FONT M, AMORESE D, LAGARDE J L. DEM and GIS analysis of thestream gradient index to evaluate effects of tectonics: TheNormandy intraplate area [J].Geomorphology,2010,119(3):172-180.
[13]郑忠, 肖俊, 王俊. ARCGIS 中基于 DEM 的工程水文信息提取应用研究：以新疆部分河流水文分析计算为例[J]. 中国农村水利水电,2010(11):20-23．
[14]姚炳光,周维博. 基于DEM和ArcGIS 的浐灞流域水文特征提取研究[J].水资源与水工程学报.2017,30(4):8-13.
[15]吴冰,李昌文.基于SRTM DEM 的盘龙河流域河网提取研究[J].水资源与水工程学报,2013,24(6):157-162.
[16]宋向阳,吴发启,赵龙山,等. 基于 DEM 的延河流域水文特征提取与分析[J]. 干旱地区农业研究,2012,28(6):200-206.
[17]李辉,代侦勇,张利华,等.利用数学形态学的遥感影像水系提取方法[J].武汉大学学报(信息科学版),2011,36(8):956-959．
[18]任岩,张飞,王娟,等. 不同 DEM数据源的艾比湖流域仿真水系对比[J]. 测绘科学,2018,43(3):35-43.
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