道路建设对区域植被类型的影响  

Effects of road construction on regional vegetation types.

作　　者：刘世梁[1] 刘琦[1] 王聪[1] 杨珏婕[1] 邓丽[1] 

机构地区：[1]北京师范大学环境学院水环境模拟国家重点实验室,北京100875

出　　处：《应用生态学报》2013年第5期1192-1198,共7页Chinese Journal of Applied Ecology

基　　金：国家环境保护公益性行业科研专项(201209029);中央高校基本科研业务费专项(105564GK)资助

摘　　要：道路作为区域人工干扰要素,对不同植被类型影响较大,并且在一定程度上影响着其区域分布特征.针对云南省热带雨林退化、人工林扩展现状,分析了不同植被类型对道路网络扩展的响应.结果表明:研究区不同道路等级对植被类型影响的差异较大,道路所影响的斑块面积在不同类型之间的差异没有规律性,主要是因为道路长度和影响距离差异较大;低等级道路所影响的植被斑块数比高等级道路多.对于不同植被类型来说,耕作植被类型受道路影响最大,其次为刺栲和红木荷林.道路网络的形成对植被破碎化的贡献最大,而且村落分布与道路分布等各人为干扰因素之间存在显著的相关性.As a regional artificial disturbance types, and plays a substantial role in defining component, road exerts great effects on vegetation vegetation distribution to a certain extent. Aiming at the tropical rainforest degradation and artificial forest expansion in Yunnan Province of Southwest China, this paper analyzed the effects of road network extension on regional vegetation types. In the Province, different classes of roads had different effects on the vegetation types, but no obvious reg- ularity was observed in the effects on the patch areas of different vegetation types due to the great variations of road length and affected distance. However, the vegetation patch number was more affected by lower class roads because of their wide distribution. As for different vegetation types, the vegetations on cultivated land were most affected by roads, followed by Castanopsis hystrix and Schima wallichii forests. Road network formation contributed most to the vegetation fragmentation, and there existed significant correlations between the human disturbance factors including village- and road distributions.

关 键 词：道路建设 植被类型 人工林 干扰 

分 类 号：Q948[生物学—植物学]