Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1007/s12665-010-0861-3 |
Spatio-temporal evolution of rocky desertification and its driving forces in karst areas of Northwestern Guangxi, China | |
Yang, Qing-qing1,2,3,5; Wang, Ke-lin1,2; Zhang, Chunhua1,4; Yue, Yue-min1,2; Tian, Ri-chang5; Fan, Fei-de1,2,3 | |
通讯作者 | Wang, Ke-lin |
来源期刊 | ENVIRONMENTAL EARTH SCIENCES
![]() |
ISSN | 1866-6280 |
出版年 | 2011 |
卷号 | 64期号:2页码:383-393 |
英文摘要 | Rocky desertification (RD) is a process of land degradation that often results in extensive soil erosion, bedrock exposure and considerable decrease of land productivity. The spatio-temporal evolution of RD not only reflects regional ecological environmental changes but also directly impacts regional economic and social development. The study area, Hechi, is a typical karst peak cluster depression area in southwest China. Remote sensing, geographic information systems (GIS) and statistical techniques were employed to examine the evolution, including the identification of driving forces, of karst RD in the Northwestern Guangxi. The results indicate that RD became most apparent between 1990 and 2005 when areas of various types of RD increased. Within the karst RD landscape, slight RD was identified as the matrix of the landscape while potential RD had the largest patch sizes. Extremely strong RD, with the simplest shape, was the most influenced by human activities. Overall the landscape evolved from fragmented to agglomerate within the 15-year timeframe. Land condition changes were categorized as five types; desertified, recovered, unchanged, worsened, and alleviated land. The largest turnover within the RD landscape was between slight and moderate RD. With regards to the driving forces all RD had been increasingly influenced by human activities (i.e., the stronger the RD, the stronger the intensity of human disturbances). Dominant impact factors of the RD landscape had shifted from town influence and bare rock land in 1990 to bare rock and grassland in 2005. Moreover, the impacts of stony soil, mountainous proportion and river density on RD increased over time, while that of others decreased. The significant factors included human activities, land use, soil types, environmental geology, and topography. However, only anthropogenic factors (human activities and land use) were reported as leading factors whereas the others acted simply as constraining factors. |
英文关键词 | Northwestern Guangxi, China Karst Rocky desertification (RD) Landscape pattern Redundancy analysis (RDA) GIS Remote sensing |
类型 | Article |
语种 | 英语 |
国家 | Peoples R China ; USA |
收录类别 | SCI-E |
WOS记录号 | WOS:000294347100009 |
WOS关键词 | LAND-USE CHANGE ; GUIZHOU PROVINCE ; SPATIAL-PATTERN ; REGION |
WOS类目 | Environmental Sciences ; Geosciences, Multidisciplinary ; Water Resources |
WOS研究方向 | Environmental Sciences & Ecology ; Geology ; Water Resources |
资源类型 | 期刊论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/167946 |
作者单位 | 1.Chinese Acad Sci, Key Lab Agroecol Proc Subtrop Reg, Inst Subtrop Agr, Changsha 410125, Hunan, Peoples R China; 2.Chinese Acad Sci, Huanjiang Observat & Res Stn Karst Ecosyst, Huanjiang 547100, Peoples R China; 3.Chinese Acad Sci, Grad Sch, Beijing 100049, Peoples R China; 4.E Tennessee State Univ, Dept Geosci, Johnson City, TN 37604 USA; 5.Zhongshan Res Inst Environm Protect, Zhongshan 528403, Peoples R China |
推荐引用方式 GB/T 7714 | Yang, Qing-qing,Wang, Ke-lin,Zhang, Chunhua,et al. Spatio-temporal evolution of rocky desertification and its driving forces in karst areas of Northwestern Guangxi, China[J],2011,64(2):383-393. |
APA | Yang, Qing-qing,Wang, Ke-lin,Zhang, Chunhua,Yue, Yue-min,Tian, Ri-chang,&Fan, Fei-de.(2011).Spatio-temporal evolution of rocky desertification and its driving forces in karst areas of Northwestern Guangxi, China.ENVIRONMENTAL EARTH SCIENCES,64(2),383-393. |
MLA | Yang, Qing-qing,et al."Spatio-temporal evolution of rocky desertification and its driving forces in karst areas of Northwestern Guangxi, China".ENVIRONMENTAL EARTH SCIENCES 64.2(2011):383-393. |
条目包含的文件 | ||||||
文件名称/大小 | 资源类型 | 版本类型 | 开放类型 | 使用许可 | ||
Spatio-temporal evol(623KB) | 期刊论文 | 出版稿 | 开放获取 | CC BY-NC-SA | 浏览 |
除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。