Patch-level based vegetation change and environmental drivers in Tarim River drainage area of West China

CORC > 新疆生态与地理研究所 > 中国科学院新疆生态与地理研究所 > 中国科学院新疆生态与地理研究所(2010年以前数据)

	Patch-level based vegetation change and environmental drivers in Tarim River drainage area of West China
	Kong ; Weijing ; Sun ; Osbert Jianxin ; Chen ; Yaning ; Yu ; Yi ; Tian ; Ziqiang
刊名	LANDSCAPE ECOLOGY
	2010
卷号	25 期号:9 页码:1447-1455
关键词	LAND-USE CHANGE LOWER REACHES COVER-CHANGE SOUTH-AFRICA WATER LANDSCAPE XINJIANG DESERTIFICATION HERBIVORES DYNAMICS
ISSN号	0921-2973
通讯作者	Sun, OJX, Beijing Forestry Univ, MOE Key Lab Silviculture & Conservat, 35 Qinghua E Rd, Beijing 100083, Peoples R China
中文摘要	Information on vegetation-related land cover change and the principle drivers is critical for environmental management and assessment of desertification processes in arid environments. In this study, we investigated patch-level based changes in vegetation and other major land cover types in lower Tarim River drainage area in Xinjiang, West China, and examined the impacts of environmental factors on those changes. Patterns of land cover change were analyzed for the time sequence of 1987-1999-2004 based on satellite-derived land classification maps, and their relationships with environmental factors were determined using Redundancy Analysis (RDA). Environmental variables used in the analysis included altitude, slope, aspect, patch shape index (fractal dimension), patch area, distance to water body, distance to settlements, and distance to main roads. We found that during the study period, 26% of the land experienced cover changes, much of which were the types from the natural riparian and upland vegetation to other land covers. The natural riparian and upland vegetation patches were transformed mostly to desert and some to farmlands, indicating expanding desertification processes of the region. A significant fraction of the natural riparian and upland vegetation experienced a phase of alkalinity before becoming desert, suggesting that drought is not the exclusive environmental driver of desertification in the study area. Overall, only a small proportion of the variance in vegetation-related land cover change is explainable by environmental variables included in this study, especially during 1987-1999, indicating that patch-level based vegetation change in this region is partly attributable to environmental perturbations. The apparent transformation from the natural riparian and upland vegetation to desert indicates an on-going process of desertification in the region.
学科主题	植物生态学
收录类别	SCI
公开日期	2011-08-19
内容类型	期刊论文
源URL	[http://ir.xjlas.org/handle/365004/9896]
专题	新疆生态与地理研究所_中国科学院新疆生态与地理研究所(2010年以前数据)
推荐引用方式 GB/T 7714	Kong,Weijing,Sun,et al. Patch-level based vegetation change and environmental drivers in Tarim River drainage area of West China[J]. LANDSCAPE ECOLOGY,2010,25(9):1447-1455.
APA	Kong.,Weijing.,Sun.,Osbert Jianxin.,Chen.,...&Ziqiang.(2010).Patch-level based vegetation change and environmental drivers in Tarim River drainage area of West China.LANDSCAPE ECOLOGY,25(9),1447-1455.
MLA	Kong,et al."Patch-level based vegetation change and environmental drivers in Tarim River drainage area of West China".LANDSCAPE ECOLOGY 25.9(2010):1447-1455.