干旱区生态环境知识资源中心(Arid): 锡林郭勒盟土地利用变化及驱动力分析

Arid

	锡林郭勒盟土地利用变化及驱动力分析
其他题名	Analysis of Land Use Change and Its Driving Force in Xilingol League
	徐广才 1; 康慕谊 2; 李亚飞 3
来源期刊	资源科学
ISSN	1007-7588
出版年	2011
卷号	33 期号:4 页码:690-697
中文摘要	以北方草地典型地区内蒙古锡林郭勒盟为研究区, 运用地理信息系统、遥感技术和数理统计等方法, 分析了1995年-2000年该区的土地利用变化, 采用典范对应分析(CCA)方法考察了气候、地形、区位和人类活动等与土地利用变化空间分布的关系. 结果显示, 1995年-2000年, 锡林郭勒盟土地利用变化区域面积为5 9130km~2, 占全盟面积的30%, 包括70种土地利用变化类型(将占锡林郭勒盟面积1%以上的15种主要土地利用变化类型纳入 CCA分析). 面积变化最大的土地利用类型依次为高覆盖度草地、中覆盖度草地和低覆盖度草地. 其中, 高覆盖度草地转出最多, 主要流向中、低覆盖度草地; 中覆盖度草地转出次之, 主要流向高覆盖度草地和低覆盖度草地. 草地覆盖度提高的区域占土地利用变化面积的21%, 草地退化与改善并存, 但以退化草地面积净增为主. C CA第一排序轴与地形起伏度的相关最大, 第二轴与海拔高度和坡向转换指数最为密切. 前四个排序轴累计可以解释典范效应中的77.8%的信息, CCA分析显示地形起伏度、海拔高度、坡向转换指数(TRASP)、年均降雨量、最近居民点距离等指标与土地利用变化空间格局的关系较为密切, 是形成土地利用变化格局的主要驱动因素, 其中地形因素对土地利用变化的影响最大, 通过影响草地与人类活动的分布影响了土地利用变化的格局
英文摘要	Land use/cover change(LUCC)is as a complex consequence of coupling effects of natural and anthropogenic factors,and forms driving forces for future environmental change and human livelihood alteration.Clarifying the main driving forces of LUCC is crucial for future land resources management based on recent land use change.The grassland region in North China is an elementary area not only for its sizable animal husbandry but also for its crucial location as a buffer zone in sheltering desertification for North China.In the present work,we investigated land use change and driving forces of Xilingol League,a prefectural level administration of Inner Mongolia Autonomous Region in this typical region.Types,area and spatial distribution of land use/cover change in Xilingol were derived from land use data of 1995 and 2000 interpreted from Landsat TM and ETM+imageries by Chinese Academy of Sciences.The land use transition matrix was employed to analyze the quantity and direction of land use/cover change.Driving forces of land use/cover change selected by fully accounting for climate,topography,location,and human activity were screened and discriminated using Canonical Correspondence Analysis(CCA).Results show that the land use change varied with type,with the changed area accounting for 30%(59130 km2) in Xilingol from 1995 to 2000,among which 70 types of land use change were identified.Among all the land use types,the high-coverage grasslands changed most sharply converting to the low-/moderate-coverage grasslands,followed by the moderate coverage grasslands,which were replaced by the high-/low coverage grassland,Grassland degradation and quality improvement coexisted spatially in Xilingol while the former was in excess of the latter in quantity.To obviate complicated calculation and reduce data redundancy,15 land use change types with area over 1%of Xilingol League were introduced into CCA analysis.CCA ordination reveals that the selected driving forces accounted for 77.8%canonical effects of land use change,with the first CCA axis primarily representing the effect of land relief,and the second CCA axis showing distinct relationships with elevation and the TRASP index.Land relief,elevation,TRASP,mean annual precipitation,and the distance to the nearest settlement were the major drivers of the land use change in Xilingol League. Among all these factors,topographic factors,such as elevation,land relief,and relative slope position,played a prominent role in determining the spatial distribution of grassland and human activities over there
中文关键词	土地利用/覆被变化 ; 驱动力 ; CCA排序 ; 锡林郭勒盟
英文关键词	LUCC Driver analysis CCA Xilingol League
语种	中文
国家	中国
收录类别	CSCD
WOS类目	ENERGY FUELS
WOS研究方向	Energy & Fuels
CSCD记录号	CSCD:4177449
来源机构	北京师范大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/227646
作者单位	1.北京农学院都市农业研究所, 北京 102206, 中国; 2.北京师范大学资源学院, 北京 100875, 中国; 3.北京师范大学资源学院, 资源与环境信息系统国家重点实验室, 北京 100875, 中国
推荐引用方式 GB/T 7714	徐广才,康慕谊,李亚飞. 锡林郭勒盟土地利用变化及驱动力分析[J]. 北京师范大学,2011,33(4):690-697.
APA	徐广才,康慕谊,&李亚飞.(2011).锡林郭勒盟土地利用变化及驱动力分析.资源科学,33(4),690-697.
MLA	徐广才,et al."锡林郭勒盟土地利用变化及驱动力分析".资源科学 33.4(2011):690-697.