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[1]SHI Lei-lei,CHEN Ning-sheng,YANG Cheng-lin,et al.Relationships Between Vegetation and Debris Flow in Well-vegetated Wawagou Valley[J].Research of Soil and Water Conservation,2008,15(03):96-99,104.

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Relationships Between Vegetation and Debris Flow in Well-vegetated Wawagou Valley

Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume: 15 Number of periods: 2008 03 Page number: 96-99,104 Column: Public date: 2008-06-20

Title:: Relationships Between Vegetation and Debris Flow in Well-vegetated Wawagou Valley

Author(s):: SHI Lei-lei^1,2,3, CHEN Ning-sheng^1,2, YANG Cheng-lin^1,2,3, QIN Bo-yong⁴; 1. Key Laboratory of Mountain Hazard and the Earth’s Surface Processes, CAS, Chengdu 610041, China;
2. Institute of Mountain Hazards and Environment, Chinese Academy of Science，Chengdu 610041, China;
3. Graduate School of Chinese Academy of Sciences, Beijing 10039, China;
4. Water Conservancy Bureau of Xuanhan County, Xuanhan, Sichuan 636150, China

Keywords:: Wawagou valley; debris flow characteristics; vegetation; remote sensing datum

CLC:: P642.23;X171.4

DOI:: -

Abstract:: Wawagou valley is located in the southwest mountainous area of Sichuan province,with high vegetation ratio.On July 16,2006,a large debris flow hazard occurred in Wawagou valley,which is a viscous debris flow.Its concentration is big and transported many big rocks.And frequency of Wawagou valley debris flow is low,but scale is big.Based on TM remote sensing data,it found that vegetation ratio of Wawagou catchment is above 80%,forest ratio is exceed 50%.Coniferous forest and broad-leaved and coniferous mixed forest are the main vegetation types of this area.Analyzing relationships between vegetation and debris flow activity in this valley,some results present.Given it as follows:Firstly,the control effect of vegetation on debris flow activity is limited.Secondly,when debris flow takes place,vegetation on slope will slipping into the channel with failed soil mass.Finally,different types of vegetation have diverse control effect on debris flow activity.

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