文献类型：期刊文献

中文题名：四川茂县土地岭大熊猫走廊带植被恢复格局及其与干扰的关系

英文题名：Studies on vegetation restoration patterns and their relationships to disturbances on Giant Panda Corridor of Tudiling,Southwest China

作者：王永健[1] 陶建平[1] 张炜银[2] 臧润国[2] 丁易[2] 李媛[1] 王微[3]

第一作者：王永健

机构：[1]西南大学生命科学学院三峡库区生态环境教育部重点实验室重庆市三峡库区植物生态与资源重点实验室;[2]中国林业科学研究院森林生态环境与保护研究所;[3]重庆文理学院生命科学系

年份：2006

卷号：26

期号：11

起止页码：3525-3532

中文期刊名：生态学报

外文期刊名：Acta Ecologica Sinica

收录：CSTPCD;;Scopus;北大核心:【北大核心2004】；CSCD:【CSCD2011_2012】；

基金：国家重点基础研究发展规划资助项目(2002CB111505);国家自然科学基金资助项目(3050038830300047)~~

语种：中文

中文关键词：土地岭;植被恢复;大熊猫走廊带;群落分类;干扰状况

外文关键词：Tudiling;vegetation restoration;Giant Panda Corridor;community classification;disturbance regime

分类号：Q145;Q948

摘要：通过样带调查和TWINSPAN、DCCA分析,从植物种、植物群落及其多样性与环境关系方面,研究了岷江上游土地岭大熊猫走廊带恢复植被的干扰状况。结果表明:应用TWINSPAN分类,并结合优势种组成、干扰状况分析及DCCA排序,可将植被划分为6个群落类型,同时划分出响应型、迟钝型、中度干扰忍耐型和重度干扰忍耐型4类干扰响应的植物类型。以样方物种和以样方多样性指数的DCCA分析结果基本一致,物种及群落的空间分布呈明显的聚集格局,反映其与环境因子间的密切关系。DCCA排序图上,海拔差、坡形、与公路距离、坡度及道路条数对群落和物种分布有明显的影响,与干扰相关性最大的坡度、样地道路数目、与公路间的距离3个因子反映了植被的干扰梯度。干扰对土地岭恢复植被影响显著,干扰降低了群落的物种多样性,同时阻碍了演替进程。
Human activities such as deforestation,cultivation,and overgrazing have contributed to the destruction of forest ecosystems in the upper Minjiang River basin for a long time,which has led to the reduction in forest cover and biodiversity.In the Giant Panda Corridor of Tudiling in this basin,the effects of current disturbance regimes on plant communities after vegetation restoration in 1980's were assessed and the community composition,species diversity and their relationships with factors significantly associated with disturbances were analyzed by means of transect sampling,two-way indicator species analysis(TWINSPAN) and detrended canonical correspondence analysis(DCCA),The results were as follows: corridor communities could be classified into six types,and species were clustered into four functional groups(response to disturbance,retarded,resistant to intermediate disturbance and resistant to heavy disturbance) based on both TWINSPAN and DCCA.It was similar between DCCA with species composition of plots and that with species diversity of plots.The communities were separated into distinct groups along the DCCA axis and this pattern was significantly correlated with environmental factors.Elevation differences,shape,slope,distance to road and the number of paths in plots influenced the distribution of the species and communities obviously.Slope,distance to road and the number of paths showed the gradient of disturbance among the communities along the DCCA axis.High disturbance intensity caused significantly lower diversity and poor regeneration of restorational vegetation communities compared to the more diverse undisturbed communities.Artificial restoration was better than natural restoration in maintaining high species diversity.The succession was inhibited in natural restoration because of the failure in tree establishment,growth and survival during regeneration.