摘要
为维持河岸带生态系统的完整,对河岸带的物种多样性研究十分必要。本研究采用Braun-Blanquet多度等级划分标准结合样方法调查了黄河中下游典型河段河岸带植物群落物种多样性特征,并探讨其与环境因子的关系。结果表明:黄河中下游典型河段河岸带调查的52个群落样方中,共有36科78属86种植物,群落物种组成较为丰富,但优势种并不明显。单一群落样方中,物种组成简单,不同样方之间物种组成与多样性存在明显差异,其中,受干扰较重的样方物种多样性较低,表明研究区河岸带植物物种多样性深受人为干扰所造成的生境破碎的影响。冗余分析表明,海拔和至河流距离是黄河中下游河岸带植物多样性的重要影响因子。
It is indispensable to investigate species diversity for maintaining the integrity of riparian ecosystems. In this study, integrating the BraunBlanquet coverabundance scale and the quadrat sampling methods, we investigated diversity characteristics of plant community in typical river riparian zones in the middle and lower reaches of Yellow River, and analyzed the relationship between herbaceous plant diversity and environmental factors. The results showed that a total of 36 families, 78 genera, and 86 plant species were observed from 52 community quadrats in the study area. Plant community species composition was rather rich, while dominant species was not obvious. In a single community quadrat, species composition was simple. However, obvious difference existed between different quadrats regarding species composition and diversity. Moreover, species diversity was relatively low for the middle stream areas that were disturbed seriously by human activities, indicating that plant species diversity in the study areas was influenced seriously by habitat fragmentation caused by human disturbance. Redundancy analysis showed that altitude and distance to river were important factors influencing plant diversity of riparian zones in the middle and lower reaches of Yellow River.
出处
《生态学杂志》
CAS
CSCD
北大核心
2015年第5期1325-1331,共7页
Chinese Journal of Ecology
基金
中国博士后科学基金项目(2014M550382)
国家自然科学基金项目(41301197
41371195)
教育部黄河中下游数字地理技术重点实验室开放基金项目资助
关键词
河岸带
物种多样性
环境因子
黄河中下游
riparian zone
species diversity
environmental factors
the middle and lower reaches of Yellow River.
作者简介
通讯作者E-mail：syding@henu．edu．cn
