青海省祁连山三河源地区景观空间格局定量分析  

Quantitative analysis of landscape pattern in three-river sources,Qilian Mountains

作　　者：曹广超[1] 李玲琴[1,2] 曹生奎[1,2] 易俊柱[2] 

机构地区：[1]青藏高原环境与资源教育部重点实验室,青海西宁810008 [2]青海师范大学生命与地理科学学院,青海西宁810008

出　　处：《青海师范大学学报（自然科学版）》2012年第1期1-5,115,共5页Journal of Qinghai Normal University(Natural Science Edition)

基　　金：国家自然科学基金(40861026);青海省科技厅基金(2007-Z-604)资助

摘　　要：通过对青海省祁连山三河源区1999年和2006年两期的Land-sat TM遥感影像进行人机交互式解译,获取了研究区景观类型数据,在GIS支持下编制了研究区景观类型图.在此基础上选取斑块大小、斑块数、景观分离度指数、香农多样性指数等主要景观格局指数定量分析了研究区景观格局特征,通过分析各景观指数变化反映研究区1999年至2006年间景观格局的变化规律.结果显示1999年至2006年研究区景观格局向多样化,破碎化趋势演进,景观空间格局受人类活动的干扰在增强.Data on landscape type were obtained through man-machine interaction interpreting TM re- mote sensing images, which were acquired from Sanheyuan region of Qilian Mountains, Qinghai province in 1999 and 2006. Based on the data, maps of landscape pattern were charted using GIS. Then rules of landscape pattern change from 1999 to 2006 were obtained by analyzing quantitatively the main indices of landscape patterns, such as number and size of patches, landscape dispersion index, Shannon＇s diversity index, and so on. Results indicated that landscape patterns are tending to diversification, fragmentation and to be affected easily by human activities.

关 键 词：祁连山 GIS 景观指数 景观格局变化 

分 类 号：P951[天文地球—自然地理学]