摘要
利用概率连接度指数的量化分析方法,分析了云南省典型地区道路网络对景观格局、生态过程以及景观功能的影响.结果表明:研究区道路网络加剧了区域景观的破碎化程度;道路网络对不同生态过程的迁移路径结构、数目以及分布的影响有所不同,影响程度随迁移扩散能力的增加而增加;道路网络总体上降低了景观维持生态过程连续性的功能(不同情景平均下降超过10%),使各个斑块在景观中的功能退化(平均下降超过40%),影响程度随迁移扩散能力的增加而增加.
By using the quantitative index of ＇ probability of connectivity＇ , this paper analyzed the effects of road network on the landscape pattern, ecological process, and landscape function in the typical areas of Yunnan Province. Road network accelerated landscape fragmentation, and changed the structure, number, and distribution pattern of ecological process dispersal paths, with the effects increased with increasing dispersal ability. The road network generally reduced the landscape function in maintaining ecological process connectivity by 〉 10% and the patch function by 〉 40%, and the effect also increased with increasing dispersal ability .
出处
《应用生态学报》
CAS
CSCD
北大核心
2009年第8期1925-1931,共7页
Chinese Journal of Applied Ecology
基金
国家自然科学基金项目(40871237)
国家重点基础研究发展计划项目(2003CB415104)资助
关键词
景观格局
生态过程
景观功能
道路网络
landscape pattern
ecological process
landscape function
road network
