川西盆周山地土地利用/覆被变化与生态发展模式——以雅安市天全县为例  

Landuse/Cover Change and Ecological Development Model in Mountain Regions around Western Sichuan Basin ——A Case Study of Tianquan County in Ya'an

作　　者：李宏[1,2] 邓良基[1,2] 张世熔[1,2] 吴金涛[1,2] 

机构地区：[1]四川农业大学资源环境学院 [2]四川省土地信息重点实验室

出　　处：《资源开发与市场》2005年第3期239-242,共4页Resource Development & Market

基　　金：国家"863"计划项目(990140046);四川省教育厅重点基金项目(SC9801402)资助。

摘　　要：采用GIS和数理统计方法,以及景观生态学中的空间格局指数对天全县1992～2002年土地利用/覆被变化特征进行研究。结果表明:林地在各种土地利用类型中占的比例最大,且呈逐年递增趋势,2002年达79.14%,但年变化率则很小,只有0 29%;耕地占的比例很小,仅有5 50%,而且10年间面积减少了4813 3hm2,但年变化率比林地大,高达2 68%。受人类活动的影响,10年间多样性指数和均匀度指数呈上升趋势,而优势度指数不断下降。由此得出产生土地利用/覆被变化的机制是受地形条件和自然灾害等自然因素的影响,同时更受人口增长、城市化进程以及政府政策等社会经济因素的驱动。从而有针对性地提出生态发展模式的建议,以期为土地资源的可持续利用提供借鉴。Based on GIS,the method of quantitative statistics and the landscape pattern indexes,this paper studied the characters of LUCC in Tianquan County from 1992 to 2002.The results showed that the ratio of forest land was the biggest and increased every year,came to 79.14% of 2002,but its dynamic degree was only 0.29%;the ratio of cultivated land was merely 5.50% and its area decreased 4813.3hm^2,but dynamic degree was higher than that of forest land,came to 2.68%.As human activities,diversity indexes and evenness indexes increased,but dominant indexes decreased between 1992 and 2002.Through analysis,this paper revealed that the driving forces of LUCC were natural driving factors,including landform,nature disaster etc,and social driving forces,such as population growth,industry development,government behavior and so on.Then,suggestions of ecological development were put forward.

关 键 词：土地利用馒被变化 生态发展模式 川西盆周山地 天全县 

分 类 号：F129.9[经济管理—世界经济] F323.211