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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, Mingli2; Li, Jun1; He, Na1; Deng, Mingfeng1; Tanoli, Javed Iqbal1; Cai, Ming3
Corresponding AuthorChen, Ningsheng
2015
Source PublicationHOLOCENE
ISSN0959-6836
EISSN1477-0911
Volume25Issue:6Pages:973-988
SubtypeArticle
AbstractWe 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.
KeywordChina Debris Flow Erosion Sedimentation Human Impacts Qionghai Lake
WOS HeadingsScience & Technology ; Physical Sciences
DOI10.1177/0959683615574893
WOS Subject ExtendedPhysical Geography ; Geology
Indexed BySCI
WOS Keyword2008 WENCHUAN EARTHQUAKE ; INDUCED LANDSLIDES ; HUMAN IMPACTS ; CLAY CONTENT ; BASIN ; RATES ; SWITZERLAND ; SOUTHWEST ; PATTERNS ; AREA
Language英语
Quartile2区
TOP
WOS SubjectGeography, Physical ; Geosciences, Multidisciplinary
WOS IDWOS:000354861200008
Funding OrganizationMinistry of Science and Technology of the People's Republic of China(2011BAK12B02) ; key laboratory of mountain hazards and surface process, Chinese Academic of Sciences
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Cited Times:16[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imde.ac.cn/handle/131551/10487
Collection山地灾害与地表过程重点实验室
Affiliation1.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
First Author Affilication中国科学院水利部成都山地灾害与环境研究所
Recommended Citation
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.
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