摘要
野外调查新疆塔里木河上游阿拉尔地区各典型湿地植被群落的物种组成，并分析其物种多样性测度，研究结果如下：1）各典型湿地植被群落物种共计15科24属26种，多为单属科和单种科，其中藜科最多，禾本科、莎草科和杨柳科次之：2）以草本植物占绝对优势，灌木其次，乔木种类极少；3）灌木层多样性指标Simpson指数为0～O．67、Shannon—Wiener指数为0～0．69、Margalef丰富度指数为0～0．91、Pielou均匀度指数为0—1．00，PIE种间相遇率为0～0．67：草本层Simpson指数、Shannon—Wiener指数、Margalef丰富度指数、Pielou均匀度指数及PIE种间相遇率则分别为0～0．65、0—1．21、0～1．17、0—0．69和0～0．65，各指数均较低，表明该地区物种贫乏，伴生种较少，群落中单优种的群落优势度较大，植被群落结构稳定性较低，生态脆弱，其一旦遭到破坏，恢复较难，应加强对其保护。
A field survey was conducted to determine species composition and species diversity of each typical wetland types＇ plant community in the Aral area located in the upstream Tarim River in Xinjiang. We identified 26 plant species belonging to 21 genura and 9 families, and most belong to single families and single species. The number of plants from Chenopodi- aceae are the most followed by those from Gramineae, Cyperaceae and Salieaceae. In the structure of plant community, herbaceous plants are dominant significantly, shrubs is second, and tree species are rarely. The Simpson, Shannon-Wie- ner, Margalef and Pielou index of shrub layer are 0-0.67, 0-0.69, 0-0.91 and 0-1.00, respectively, and the Meeting Rate of Different Plant Species （PIE） is 0-0.67. The same indexes of grass layer are 0-0.65,0-1.21,0-1.17, 0- O. 69 and 0-0.65, respectively. PIE is low, so the species in this region is poor, and the accompanying species is less. The community dominance of single species in community is larger, its stability of vegetation community structure is low, and its ecology is fragile. Therefore, once it is destroyed, the recovery will be more difficult with strong protections.
出处
《东北林业大学学报》
CAS
CSCD
北大核心
2014年第6期47-52,共6页
Journal of Northeast Forestry University
基金
国家林业公益性行业科研专项项目资助(201304114)
关键词
塔里木河
湿地
植物群落
物种多样性
Tarim River
Wetlands
Vegetation community
Species diversity
