Destruction of vegetation due to geo-hazards and its environmental impacts in the Wenchuan earthquake areas

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

	Destruction of vegetation due to geo-hazards and its environmental impacts in the Wenchuan earthquake areas
	Cui, Peng1 ; Lin, Yong-ming 2; Chen, Can 2
刊名	ECOLOGICAL ENGINEERING
	2012-07-01
卷号	44 页码:61-69
关键词	Wenchuan earthquake Geo-hazards Vegetation destruction Restoration and reconstruction Environmental impacts
ISSN号	0925-8574
通讯作者	Cui, Peng
英文摘要	Geo-hazards induced by earthquakes have caused ecosystem degradation and vegetation destruction. Little, however, is known about the consequences of geo-hazards due to a lack of research data. We have undertaken a study in the Wenchuan earthquake-affected area of China in order to identify and characterize vegetation destruction and its consequent environmental impact. The Wenchuan earthquake on 12th May, 2008 induced numerous geo-hazards (including rock avalanches, landslides, landslide-dammed lakes and debris flows) that caused vegetation destruction up to 1249.5 km(2), of which shrub comprised the largest proportional area with 338.559 km(2). The vegetation coverage decreased by 4.76% in 9 severely damaged cities and counties and by 12.37% in the Subao river, Beichuan county. Rock avalanches and landslides were the most common destructive types, resulting in 98.73% of all types of geo-hazards, whereas debris flows and landslide-dammed lakes accounted for 1.27%. Vegetation destruction was distributed along both sides of rivers causing erosion, formation of debris flows and landslides. Hydrologic progress was changed and hydrological adjusting function diminished due to vegetation deterioration resulting in bare rock (infiltration reduced, runoff increased and flow concentration expedited) and deposit region (infiltration increased and runoff reduced) in catchment. Soil erosion was intensified causing increased sediment transportation of rivers, decreased storage capacities of reservoirs downstream, a significantly increased area that has suffered severe erosion and aggravated magnitude and damage capability of debris flows and landslides. Ecosystem function declined and vegetation restoration and reconstruction was difficult due to co-degradation of vegetation-soil system in the earthquake-affected areas. Finally, we summarized the challenges faced in the future for vegetation restoration and reconstruction. (C) 2012 Elsevier B.V. All rights reserved.
WOS标题词	Science & Technology ; Life Sciences & Biomedicine ; Technology
类目[WOS]	Ecology ; Engineering, Environmental ; Environmental Sciences
研究领域[WOS]	Environmental Sciences & Ecology ; Engineering
关键词[WOS]	CENTRAL TAIWAN ; RECOVERY ; SUCCESSION
收录类别	SCI
语种	英语
WOS记录号	WOS:000305443100008
内容类型	期刊论文
源URL	[http://ir.imde.ac.cn/handle/131551/9887]
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.Fujian Agr & Forestry Univ, Coll Forestry, Fuzhou 350002, Peoples R China
推荐引用方式 GB/T 7714	Cui, Peng,Lin, Yong-ming,Chen, Can. Destruction of vegetation due to geo-hazards and its environmental impacts in the Wenchuan earthquake areas[J]. ECOLOGICAL ENGINEERING,2012,44:61-69.
APA	Cui, Peng,Lin, Yong-ming,&Chen, Can.(2012).Destruction of vegetation due to geo-hazards and its environmental impacts in the Wenchuan earthquake areas.ECOLOGICAL ENGINEERING,44,61-69.
MLA	Cui, Peng,et al."Destruction of vegetation due to geo-hazards and its environmental impacts in the Wenchuan earthquake areas".ECOLOGICAL ENGINEERING 44(2012):61-69.