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《Chinese Agricultural Science Bulletin》 2017-23
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Comparison of the Determination of Optimal Convergence Threshold Based on Mean Change-point and Bifurcation Ratio

Liang Beiyu;Xu Yali;Bai Leichao;Luo Mingliang;Zhao Wenqi;Land and Resource School, China West Normal University;  
Digital Elevation Model provides more diversified techniques for the hydrological analysis. Theauthors made use of mean change-point and bifurcation ratio to synthetically analyze hydrologicalcharacteristics and geomorphic features in different areas, meanwhile, compared the difference of river networkextraction through the optimal threshold and the characteristics of bifurcation ratio based on ASTER GDEM.The results indicated that the optimal convergence threshold of Qingxi river area and Xingzi river area was1500 and 1300, respectively, the drainage density was 0.63 and 0.68, respectively; the ability of branch of riverthrough the identical convergence threshold in different basin was the same or similar, but the number of thechannel had great difference. The combination of the two factors may provide a theoretical basis for the futureresearch.
【Fund】: 国家自然科学基金项目“基于DEM的黄土高原流域侵蚀基准体系研究”(41101348);; 西华师范大学基本科研业务费专项资金资助项目“黄土地貌鞍部下切效应研究”(15C002);; 绵阳师范学院四川省生态安全与保护重点实验室“干热河谷生态退化区冲沟侵蚀模拟的不确定性研究”(ESP1606)
【CateGory Index】: P333
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【Citations】
Chinese Journal Full-text Database 10 Hits
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【Co-citations】
Chinese Journal Full-text Database 8 Hits
1 FENG Yuan;ZHAO Mudan;ZHANG Peng;WU Yuxin;College of Urban and Environmental Science,Northwest University;;Study on Topographic Features of the Terraces DEM[J];水土保持研究;2017-04
2 Liang Beiyu;Xu Yali;Bai Leichao;Luo Mingliang;Zhao Wenqi;Land and Resource School, China West Normal University;;Comparison of the Determination of Optimal Convergence Threshold Based on Mean Change-point and Bifurcation Ratio[J];中国农学通报;2017-23
3 TANG Guo-an;LI Fa-yuan;XIONG Li-yang;Key Laboratory of Virtual Geographic Environment,Ministry of Education,Nanjing Normal University;;Progress of Digital Terrain Analysis in the Loess Plateau of China[J];地理与地理信息科学;2017-04
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7 WANG Yan-wen;QIN Cheng-zhi;State Key Laboratory of Resources and Environmental Information System,Institute of Geographic Sciences and Natural Resources,CAS;College of Resources and Environment,University of Chinese Academy of Sciences;Jiangsu Center for Collaborative Innovation in Geographical Information Resource Development and Application,School of Geographic Science,Nanjing Normal University;;Review of Methods for Landform Automatic Classification[J];地理与地理信息科学;2017-04
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4 QI Xiaofei;WANG Guangxia;MA Jun;WANG Fuqiang;Institute of Geography Spatial Information,Information Engineering University;61363Troops;78138Troops;;An Accuracy Model of DEM Terrain Representation Based on Scatterplot Matrices and Regression Analysis[J];武汉大学学报(信息科学版);2013-11
5 ZHANG Yao 1,FAN Hong 2,LI Yu ’ e 3 1.Sichuan Geomatic Center,Chengdu 610041,China;2.State Key Laboratory of Information Engineering in Surveying,Mapping and Remote Sensing,Wuhan University,Wuhan430079,China;3.Sichuan Smart Map Information Technology Company,Chengdu 610041,China;A Method of Terrain Feature Extraction Based on Contour[J];测绘学报;2013-04
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8 WANG Zhe1,GAO Sanhong1,ZHENG Huiying1,LI Lichun2(1.Beijing Institute of Tracking and Telecommunications Technology,Beijing 100094; 2.Beijing Aerospace Control Center,Beijing 100094);Design of a Parallel 3D Lunar Terrain Reconstruction System[J];飞行器测控学报;2013-04
9 LIU Kai,TANG Gou-an,JIANG Ling,SONG Xiao-dong,YANG Jian-yi,ZHANG Gang(KeyL aboratory of Virtual Geographic Environment,Ministryo f Education,NanjingN ormal University,Nanjing 210023,China);Parallel Calculation and Efficiency Analysis for Neighborhood Statistic Algorithm in Digital Terrain Analysis[J];地理与地理信息科学;2013-04
10 ZHANG Gang 1,TANG Guo-an 1,SONG Xiao-dong 1,YANG Kun 2(1.Key Laboratory of Virtual Geographic Environment,Ministry of Education,Nanjing Normal University,Nanjing 210023;2.School of Computer Science and Technology,Nanjing Normal University,Nanjing 210023,China);Research on Distributed Parallel Visibility Analysis Algorithm Based on DEM[J];地理与地理信息科学;2013-04
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