干旱区生态环境知识资源中心(Arid): Driving forest succession in karst areas of Chongqing municipality over the past decade

Arid

	Driving forest succession in karst areas of Chongqing municipality over the past decade
	Xiao Qiang; Xiao Yang; Liu Yuan; Tao Jianping
来源期刊	Forest Ecosystems
ISSN	2095-6355
出版年	2020
卷号	7 期号:1
英文摘要	Background: Karst areas in southwestern China exhibit ecological degradation in the form of rocky desertification. Local governments launched large-scale afforestation and other ecological restoration programs to curb this trend. Soil thickness is a key limiting factor for vegetation restoration in Karst areas, but the relationship between ecological restoration and soil thickness remains unclear. Further, afforestation consumes large amounts of water, which impacts water supply in karst areas. In this study, we used GIS and statistical analyses to determine rocky desertification sensitivity and its driving factors in karst areas of Chongqing municipality over the past decade. Results: Soil thickness is one of the key factors that restrict ecological restoration of rocky desertification. From 2000 to 2010, rocky desertification sensitivity in karst areas was on the rise along with an increase in afforestation. Areas of high sensitivity were mainly distributed in Pengshui County, Wulong District, and Youyang County; Shizhu County had the lowest overall incidence of desertification. Spatial distribution of rocky desertification was significantly affected by rainfall and soil thickness. Regression analysis showed that the main factors controlling changes in rocky desertification in natural forest over time were precipitation which explained 23.73% of total variance, and soil thickness which explained 23.42% of total variance. Soil thickness and soil water content had a higher correlation coefficient (at 0.516) in natural forests than in planted forests. Conclusion: This study showed that increases in soil thickness in a karst area had a significant positive impact on the fragile ecological environment. This indicates that ecosystem restoration in karst areas will benefit from addressing soil thickness.
英文关键词	Rocky desertification GIS Karst areas Ecological restoration Ecological drivers
类型	Article
语种	英语
开放获取类型	DOAJ Gold
收录类别	CSCD
WOS研究方向	Environmental Sciences & Ecology
CSCD记录号	CSCD:6775389
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/336327
作者单位	Xiao Qiang, School of Life Sciences, Southwest University;;Chongqing University of Arts and Sciences, Key Laboratory of Eco-environments in Three Gorges Reservoir Region (Ministry of Education);;Chongqing Key Laboratory of Plant Ecology and Resources Research in Three Gorges Reservoir Region;;, ;;, Chongqing;;Chongqing 400715;;402160.; Xiao Yang, College of Biology and Environmental Sciences, Jishou University, Jishou, Hunan 416000, China.; Liu Yuan, School of Life Sciences, Southwest University, Key Laboratory of Eco-environments in Three Gorges Reservoir Region (Ministry of Education);;Chongqing Key Laboratory of Plant Ecology and Resources Research in Three Gorges Reservoir Region, Chongqing 400715.; Tao Jianping, School of Life Sciences, Southwest University, Key Laboratory of Eco-environments in Three Gorges Reservoir Region (Ministry of Education);;Chongqing Key Laboratory of Plant Ecology and Resources Research in Three Gorges Reservoir Region, Chongqing 400715.
推荐引用方式 GB/T 7714	Xiao Qiang,Xiao Yang,Liu Yuan,et al. Driving forest succession in karst areas of Chongqing municipality over the past decade[J],2020,7(1).
APA	Xiao Qiang,Xiao Yang,Liu Yuan,&Tao Jianping.(2020).Driving forest succession in karst areas of Chongqing municipality over the past decade.Forest Ecosystems,7(1).
MLA	Xiao Qiang,et al."Driving forest succession in karst areas of Chongqing municipality over the past decade".Forest Ecosystems 7.1(2020).