摘要
2010年7-8月,采用实地样方法和样线法对新疆维吾尔自治区沙雅县荒漠与绿洲过渡带植物群落进行野外调查,采用Margalef丰富度指数、Shannon-Wiener指数、Pielou均匀度指数和生态优势度等指标综合分析了塔里木河上游植物群落组成与多样性特征。调查显示,绿洲-荒漠过渡带共有9科14种植物,可划分为6个群落类型,植物群落分层明显,结构简单。在过渡带中,乔木平均密度为771.1株·hm-2,灌木平均密度为1 413.3株·hm-2,草本平均密度为864.9株(丛)·hm-2;过渡带植物Margalef丰富度指数为1.47,Shannon-Wiener指数为1.62,Pielou均匀度指数为0.61,生态优势度为0.26;群落多样性指数显示较好的水分条件促进形成较复杂的群落,在远离河岸地区由于空间异质降低,群落向较为均匀的方向发展。
During July to August of 2010, field investigations by quadrat and line transect method were conducted on species composition of plant communities in the ecotone of desert and oasis in the upper reaches of Tarim River, Shaya county, Xinjiang UygurAutonomous Region. Analysis was carried out on diversity of the research area by Margalef richness index, Shannon-Wiener index, Pielou evenness index and ecological dominance. The results showed that there were14 species plant of 9 families, and could be divided into 6 community types. The plant communities had evident layers and simple structure. The mean density of arbors was 771.1 trees/ha, that of shrub 1 413.3 trees/ha, and that of herb 864.9 clump/ha. Margalef abundance index was 1.47, Shannon-Wiener index1.62, Pielou evenness index 0.61 and ecological dominance 0.26. The investigation and analysis resulted that species in the communities near the River had more diversities.
出处
《浙江林业科技》
北大核心
2017年第5期16-22,共7页
Journal of Zhejiang Forestry Science and Technology
基金
兵团科技攻关计划课题(2014BA035)
"十二五"农村领域国家科技计划项目(2012BAD16B0305)
中国科学院野外站联盟项目(KFJ-SW-YW027-04)共同资助
关键词
塔里木河上游
荒漠与绿洲过渡带
植物群落
多样性
upper reaches of Tarim River
ecotone of desert and oasis
plant community
diversity
作者简介
吉小敏,高级工程师,从事生态恢复和荒漠化防治研究;E-mail：75774680@qq.com.
通信作者：梁继业,副教授,从事荒漠化防治与景观生态学研究;E-mail：jethro123123@126.com.
