Erosion-creep-collapse mechanism of underground soil loss for the karst rocky desertification in Chenqi village, Puding county, Guizhou, 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 > 山地表生过程与生态调控重点实验室

	Erosion-creep-collapse mechanism of underground soil loss for the karst rocky desertification in Chenqi village, Puding county, Guizhou, China
	Wang, Jianxiu 1,2; Zou, Baoping 2; Liu, Yan 2; Tang, Yiqun 1,2; Zhang, Xinbao3 ; Yang, Ping 1,2
刊名	ENVIRONMENTAL EARTH SCIENCES
	2014-10-01
卷号	72 期号:8 页码:2751-2764
关键词	Karst rocky desertification Underground soil loss Erosion-creep-collapse mechanism
ISSN号	1866-6280
通讯作者	Wang, Jianxiu
英文摘要	Carbonate rocks distribute widely in China. The total area of the carbonate rocks is about 3,430,000 km(2), and the exposed area of the carbonate is approximately 13 % of China's territory. In 2003, soil loss in Yunnan, Guizhou, and Guangxi provinces reached 179,600 km(2), which is almost 40.1 % of the total area, causing rocky desertification. In this study, the erosion-creep-collapse mechanism of underground soil loss for the karst rocky desertification in Chenqi village, Puding county, Guizhou province is proposed. The mechanism occurs under the following geological environment: slope surface undulation, underlying bedrock surface fluctuation and thin and inhomogeneous soil overlying, overlying soil generation by bedrock weathering, underground karst development, and large groundwater depth and lying water table under the bottom of soils. The erosion-creep-collapse mechanism of underground soil loss in the karst slopes is explained as follows: power loss due to human cultivation activities that destroy the soil structure, hydraulic force formed by rainfall infiltration, wet-dry cycle generated by rainfall, erosion effect caused by rainfall penetration, creeping and flowing of plastic-stream soil, and collapse. The erosion-creep-collapse mechanism of underground soil loss has seven steps: disturbance of soils filled in underground karst cave by human activities, internal soil erosion and partial collapse caused by hydraulic power, internal free surface formation within the soil in the filled karst cave, internal soil creeping, soil pipe formation, soil pipe collapse, and ground surface collapse and filling. Soil loss develops slowly, and sudden transportation occurs by collapse. Soil loss can be explained by the proposed mechanism, and soil loss can be prevented by controlling soil collapse.
WOS标题词	Science & Technology ; Life Sciences & Biomedicine ; Physical Sciences
类目[WOS]	Environmental Sciences ; Geosciences, Multidisciplinary ; Water Resources
研究领域[WOS]	Environmental Sciences & Ecology ; Geology ; Water Resources
关键词[WOS]	LAND-USE ; WESTERN IRELAND ; SOUTHWEST CHINA ; PROVINCE ; BURREN ; RATES ; AREA ; GIS
收录类别	SCI
语种	英语
WOS记录号	WOS:000342494100003
内容类型	期刊论文
源URL	[http://ir.imde.ac.cn/handle/131551/9956]
专题	成都山地灾害与环境研究所_山地表生过程与生态调控重点实验室
作者单位	1.Tongji Univ, Minist Educ, Key Lab Geotech & Underground Engn, Shanghai 200092, Peoples R China 2.Tongji Univ, Dept Geotech Engn, Shanghai 200092, Peoples R China 3.Chinese Acad Sci, Inst Mt Hazards & Environm, Chengdu 610041, Peoples R China
推荐引用方式 GB/T 7714	Wang, Jianxiu,Zou, Baoping,Liu, Yan,et al. Erosion-creep-collapse mechanism of underground soil loss for the karst rocky desertification in Chenqi village, Puding county, Guizhou, China[J]. ENVIRONMENTAL EARTH SCIENCES,2014,72(8):2751-2764.
APA	Wang, Jianxiu,Zou, Baoping,Liu, Yan,Tang, Yiqun,Zhang, Xinbao,&Yang, Ping.(2014).Erosion-creep-collapse mechanism of underground soil loss for the karst rocky desertification in Chenqi village, Puding county, Guizhou, China.ENVIRONMENTAL EARTH SCIENCES,72(8),2751-2764.
MLA	Wang, Jianxiu,et al."Erosion-creep-collapse mechanism of underground soil loss for the karst rocky desertification in Chenqi village, Puding county, Guizhou, China".ENVIRONMENTAL EARTH SCIENCES 72.8(2014):2751-2764.