摘要
在以植物群落调查样地为基础 ,对塔里木河下游不同林龄人工胡杨林的物种丰富度、物种多样性指数、群落均匀度、生态优势度等进行了分析 ,同时对土壤理化性质在 2 1a间的变化情况也作了详细分析。通过分析 ,表明人工胡杨群落随着发育年限的增加 ,群落物种丰富度 ,物种多样性指数和均匀度指数不断增长 ,而群落生态优势度逐渐降低 ,同时土壤理化性质不断改善。在此基础上 ,对塔里木河植被的演变趋势作一初步的探讨和估计 ,从而对塔里木河下游植被的生态恢复也具有重要意义。
In order to regenerate the vegetation in the lower reaches of the Tarim River, the diversity of the artificial forests of Populus euphratica is analyzed from the aspects of the richness of community species, diversity index of species, uniformity of communities, and ecological predominance of the artificial forests of Populus euphratica with the different ages based on the investigation of plant plots, and the change of the physiochemical properties of soil in recent 21 years is also analyzed in detail. The results show that the richness of community species, diversity index of species and uniformity of communities of the artificial forests of Populus euphratica increase continuously with the increase of age, but the ecological predominance decreases with the increase of age. Moreover, the physiochemical properties of the soil are continuously improved.
出处
《干旱区地理》
CSCD
北大核心
2004年第3期384-387,共4页
Arid Land Geography
基金
中国科学院知识创新重大项目 (KZCX1-0 8-0 2 )
关键词
塔里木河下游地区
人工胡杨林
生态建设
植被
artificial community
regeneration of vegetation
ecological process
Populus euphratica
