摘要
利用空间格网抽样调查方法,研究2014年7月滇西北纳帕海湿地区草甸的植物盖度、生物量和叶面积指数。研究结果表明,从该区北端湖泊周边到南端村庄密集区,随着人类活动影响的加剧,草甸退化程度由轻度退化、重度退化直至发展为狼毒(Euphorbia fischeriana)草甸,草甸植物生物量、盖度和叶面积指数也随之明显减小;中度、重度退化草甸主要分布于该区北端纳帕海湖泊周边,北端村庄周边间或分布有围封的未退化和轻度退化草甸,该区南端主要分布着以狼毒为优势种的重度退化草甸,在靠近村庄的区域,草甸多被开垦为农田。人类活动,特别是过渡放牧、旅游和开垦,极大地破坏了该区草甸的生态环境。
Using spatial gridding method of sampling survey, the vegetation coverage, biomass and leaf area in- dex of the meadow in Napahai wetlands, Yunnan province were studied in July 2014. The results showed that the influence level of human activities was becoming stronger from the northern lake bank to the southern dense villages; the meadow was from slight to severe degradation and finally turned into Euphorbia fischeri-ana meadow; and the vegetation biomass, coverage and leaf area index were gradually decreased. The moder- ate and severe degraded meadows were mainly distributed in northern end of Napahai wetlands; and the non-degraded and slight degraded meadows were distributed around the northern villages. The severely de- graded meadow was mainly distributed in south tip of the wetlands, in which Euphorbiafischeriana was domi- nant species. Near villages, a lot of meadow was reclaimed to farmlands. The human activities, such as partic- ularly overgrazing, tourism and reclamation, had greatly damaged ecological environment of the meadow in this region.
出处
《湿地科学》
CSCD
北大核心
2017年第1期144-147,共4页
Wetland Science
基金
国家自然科学基金项目(31360122)
云南省高校优势特色重点学科(生态学)建设项目资助
关键词
植物盖度
生物量
叶面积指数
草甸
纳帕海湿地
vegetation coverage
biomass
leaf area index
meadow
Napahai wetlands
作者简介
马旭晨（1992-），男，河北省石家庄人，硕士研究生，主要从事环境生态学研究。E—mail：mxchen2014@126．com
通讯作者：栗忠飞，副教授。E—mail：lizhongfei@sohu．com
