Effects of human activity on erosion, sedimentation and debris flow activity - A case study of the Qionghai Lake watershed, southeastern Tibetan Plateau, China

CORC > 成都山地灾害与环境研究所 > 中国科学院水利部成都山地灾害与环境研究所 > 山地灾害与地表过程重点实验室

	Effects of human activity on erosion, sedimentation and debris flow activity - A case study of the Qionghai Lake watershed, southeastern Tibetan Plateau, China
	Chen, Ningsheng1 ; Chen, Mingli 2; Li, Jun1 ; He, Na1 ; Deng, Mingfeng1 ; Tanoli, Javed Iqbal 1; Cai, Ming 3
刊名	HOLOCENE
	2015-06-01
卷号	25 期号:6 页码:973-988
关键词	China debris flow erosion sedimentation human impacts Qionghai Lake
ISSN号	0959-6836
通讯作者	Chen, Ningsheng
英文摘要	We report the results of a study of the Qionghai Lake watershed, located on the southeastern edge of the Qinghai-Tibetan Plateau, China, designed to investigate the effects of human activity on changes in soil erosion intensity, debris flow activity and lacustrine sedimentation. The results indicate that the mean denudation rate of the watershed was about 0.82mm/yr during the Holocene. However, since 1952, the rate has increased to 1.82mm/yr, accompanied by a greatly increased sedimentation rate in Qionghai Lake. The increased denudation rate was accompanied by increases in population and the related intensified exploitation of land resources, including deforestation and an increase in the area of cultivated land. In addition, the increasing rate of denudation and lacustrine sedimentation is closely linked to the increased frequency of flooding and debris flows in the watershed. Based on our results, we estimate that the longevity of Qionghai Lake is about 1200years in the case of natural evolution; however, this is reduced to 540years in the context of continued intensive human activity in the region. These findings are important for the mitigation of mountain hazards such as debris flows and for the promotion of sustainable economic development in the Qionghai Lake area. They also provide a basis for obtaining an improved estimate of changes in denudation rate on the southeastern edge of the Qinghai-Tibet Plateau.
WOS标题词	Science & Technology ; Physical Sciences
类目[WOS]	Geography, Physical ; Geosciences, Multidisciplinary
研究领域[WOS]	Physical Geography ; Geology
关键词[WOS]	2008 WENCHUAN EARTHQUAKE ; INDUCED LANDSLIDES ; HUMAN IMPACTS ; CLAY CONTENT ; BASIN ; RATES ; SWITZERLAND ; SOUTHWEST ; PATTERNS ; AREA
收录类别	SCI
语种	英语
WOS记录号	WOS:000354861200008
内容类型	期刊论文
源URL	[http://ir.imde.ac.cn/handle/131551/10487]
专题	成都山地灾害与环境研究所_山地灾害与地表过程重点实验室
作者单位	1.Chinese Acad Sci, Key Lab Mt Hazards & Earth Surface Proc, Inst Mt Hazards & Environm, Chengdu 610041, Peoples R China 2.Sichuan Univ, State Key Lab Hydraul & Mt River Engn, Coll Water Resources & Hydropower, Chengdu, Sichuan, Peoples R China 3.Laurentian Univ, Bharti Sch Engn, Sudbury, ON P3E 2C6, Canada
推荐引用方式 GB/T 7714	Chen, Ningsheng,Chen, Mingli,Li, Jun,et al. Effects of human activity on erosion, sedimentation and debris flow activity - A case study of the Qionghai Lake watershed, southeastern Tibetan Plateau, China[J]. HOLOCENE,2015,25(6):973-988.
APA	Chen, Ningsheng.,Chen, Mingli.,Li, Jun.,He, Na.,Deng, Mingfeng.,...&Cai, Ming.(2015).Effects of human activity on erosion, sedimentation and debris flow activity - A case study of the Qionghai Lake watershed, southeastern Tibetan Plateau, China.HOLOCENE,25(6),973-988.
MLA	Chen, Ningsheng,et al."Effects of human activity on erosion, sedimentation and debris flow activity - A case study of the Qionghai Lake watershed, southeastern Tibetan Plateau, China".HOLOCENE 25.6(2015):973-988.