摘要
采用野外采样调查的方法,结合聚类(Cluster)、多维排序尺度(MDS)、典范对应分析(CCA),以及Shannon多样性指数、Pielou种类均匀度指数、Margalef种类丰度指数等手段,研究了巢湖流域春季大型底栖动物的种群结构特征、多样性及其与环境因子的相关性.调查共采集到大型底栖动物23种,其中环节动物门6种,占26.1%,节肢动物门8种,占34.8%,软体动物门9种,占39.1%;流域内大型底栖动物的优势种为环节动物门的霍甫水丝蚓(Limno-drilus hoffmeisteri)和苏氏尾鳃蚓(Branchiura sowerbyi),以及软体动物门的铜锈环棱螺(Bel-lamya aeruginosa),且其在流域内的分布具有显著的空间差异性.出入湖河流上游区域(群落Ⅰ)生物多样性相对较好;出入湖河流下游区域(群落Ⅱ)生物多样性最差;巢湖湖体及出入湖河流河口(群落Ⅲ)生物多样性处于两者之间.巢湖流域大型底栖动物空间分布受各种环境因素影响,其中Chl a与NO-为主要影响因素.
By the method of field investigation in combining with cluster analysis,multi-dimensional scaling analysis and canonical correspondence analysis,and using the indices of Shannon,Pielou,and Margalef,this paper studied the community structure and biodiversity of macrobenthos in the Chaohu basin in spring,and their relationships with environmental factors.A total of 23 macrobenthos species were collected,among which,six species（26.1% of total） were annelids,eight species（34.8%） were arthropods,and nine species（39.1%） were mollusks.The dominant species were Limnodrilus hoffmeisteri,Branchiura sowerbyi,and Bellamya aeruginosa,and their distribution had obvious spatial heterogeneity.The upper reaches of the rivers inside and out of Chaohu Lake had the highest macrobenthos biodiversity,followed by the Chaohu Lake and its estuary,and the lower reaches of the rivers inside and out of Chaohu Lake.The spatial distribution of the macrobenthos was also affected by various environmental factors,among which,Chl a and NO3-were the main ones.
出处
《应用生态学报》
CAS
CSCD
北大核心
2010年第8期2132-2139,共8页
Chinese Journal of Applied Ecology
基金
国家水体污染控制与治理科技重大专项(2008ZX07526-002-08)资助
关键词
巢湖流域
大型底栖动物
群落特征
环境因子
Chaohu basin
macrobenthos
community characteristics
environmental factor.
作者简介
高峰，男，1985年生，博士研究生．主要从事湖泊生态方面研究．E—mail：gaofengre@163．com
通讯作者．E—mail：jcdeng@niglas．ac．cn
