东太湖不同人为干扰程度区域植物多样性研究

Study on plant diversity in different human disturbance areas of Eastern Taihu Lake

水产养殖等人为活动会影响水生植被群落结构、群落动态和生物多样性。为具体分析人为活动对水生植被群落的影响,2013~2014年,在东太湖人工干扰严重的网围养殖区和人工干扰较轻的非养殖区选取11个样点进行了8次实地采样分析。分析结果表明,东太湖现有双子叶植物16科21属23种,主要有3种植物群落类;在人为干扰严重的围栏养殖区域,植物多样性较轻度人为干扰的湖区有明显下降;但植物多样性在2010年退渔还湖后较2002~2008年有较为明显的提高。

Human activities of aquaculture etc. will impact community structure,community dynamics and ecological diversity of aquatic vegetation. To analyze the impact of human activities on community of aquatic vegetation in detail,from 2013 to 2014,8 explorations were conducted at 11 sampling sites in heavily disturbed penned aquaculture and lightly disturbed non-aquaculture areas in East Taihu Lake. The analysis results showed that there were 16 families,21 genera and 23 species dicotyledonous plants as well as three main plant communities in Eastern Taihu Lake. The plant diversity in heavily disturbed penned aquaculture area was obviously smaller than that in lightly disturbed non-aquaculture area,but the plant diversity of East Taihu Lake had risen obviously since aquaculture was forbidden in 2010.