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[1]ZHANG Yifeng,JIAO Juying,CHEN Yixian,et al.Channel Morphology and Sediment Connectivity of Fangta Wastersed in Ansai County of Northern Shaanxi Province[J].Research of Soil and Water Conservation,2019,26(03):11-15.

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Channel Morphology and Sediment Connectivity of Fangta Wastersed in Ansai County of Northern Shaanxi Province

Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume: 26 Number of periods: 2019 03 Page number: 11-15 Column: Public date: 2019-04-12

Title:: Channel Morphology and Sediment Connectivity of Fangta Wastersed in Ansai County of Northern Shaanxi Province

Author(s):: ZHANG Yifeng¹, JIAO Juying^1,2, CHEN Yixian², TANG Bingzhe¹; 1. State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Institute of Soil and Water Conservation, Northwest A & F University, Yangling, Shaanxi 712100, China;
2. State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Institute of Soil and Water Conservation, Chinese Academy of Sciences and Ministry of Water Resources, Yangling, Shaanxi 712100, China

Keywords:: channel network; channel level; channel slope; runoff node; sediment connectivity

CLC:: S157.1

DOI:: -

Abstract:: Study on the main channel and its tributary channel of Fangta watersed in Ansai County of northern Shaanxi, aims at investigating the influences of channel networks, channel levels, runoff nodes and check dams on sediment connectivity. ArcGIS software are used to extract the channel networks, channel level and runoff node based on the digital elevation model derived from topographic maps with the scale of 1:10 000, and the location of sediment connectivity was recorded by combining with the field investigation.The results show that sediment connectivity and channel slope decrease with the increase of channel level, sediment connectivity also decreases with the decrease of channel slope, the feature information index of runoff nodes has the positive correlation with channel level. The channel morphology indexes can reflect the change of channel sediment connectivity and realize the evaluation of sediment connectivity.

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