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云南洱海沉水植被现状及其动态变化
引用本文:胡小贞,金相灿,杜宝汉,朱 江.云南洱海沉水植被现状及其动态变化[J].环境科学研究,2005,18(1):1-4.
作者姓名:胡小贞  金相灿  杜宝汉  朱 江
作者单位:1. 中国环境科学研究院,北京,100012
2. 云南大理州环境科学研究所,云南,大理,671000
3. 云南大理州洱海管理局,云南,大理,671000
基金项目:国家重点基础研究发展计划项目(2002CB412301),国家"十五"重大科技专项课题(2002AA60103)
摘    要:1998年4月对洱海沉水植物进行了全湖大调查,初步摸清了洱海沉水植物主要优势种、群落类型与分布以及春季生物量。结合历史资料,对洱海沉水植被的动态变化特征进行了分析,认为近年来洱海沉水植物种类减少,物种多样性下降,群落结构简单化,优势种以较耐污的微齿眼子菜为主,植被资源呈现退化趋势。并从水体富营养化发展与网箱养鱼2个方面对洱海沉水植被动态变化的原因进行了分析。

关 键 词:洱海  沉水植物  优势种
文章编号:1001-6929(2005)01-0001-04
收稿时间:2004/6/2 0:00:00

Submerged Macrophyte of Lake Erhai and Its Dynamic Change
HU Xiao-zhen,JIN Xiang-can,DU Bao-han and ZHU Jiang.Submerged Macrophyte of Lake Erhai and Its Dynamic Change[J].Research of Environmental Sciences,2005,18(1):1-4.
Authors:HU Xiao-zhen  JIN Xiang-can  DU Bao-han and ZHU Jiang
Institution:HU Xiao-zhen~1,JIN Xiang-can~1,DU Bao-han~2,ZHU Jiang~3
Abstract:A field survey for submerged macrophyte of Lake Erhai was carried out in April 1998. The survey initially revealed the dominant species, the community types and their distribution, and the biomass in the spring of the submerged macrophyte of Lake Erhai. The dynamic change characteristics of submerged macrophyte were analyzed based on relevant historical data. These characteristics included decrease of submerged macrophyte species, simplification of community, changing of the dominant species to pollutant-resistant species of P. maackianus A. Benn. and deterioration of plant resources of the whole lake. Eutrophication and pen-fishing, as two main factors affecting the dynamic change of submerged macrophyte in Lake Erhai, were finally discussed.
Keywords:Lake Erhai  submerged macrophyte  dominant species
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