摘要
根据2009年春(3月)、夏(6月)、秋(9月)、冬(12月)瓯江干流丽水段(28°16′47.03″N—28°24′42.66″N、119°42′31.41″E—119°57′13.03″E)的渔业资源调查资料,对瓯江干流丽水段鱼类的资源状况、重要种类的生态优势度、多样性指数、群落结构等动态变化进行了分析。结果表明:瓯江干流丽水段现有鱼类47种、隶属于5目、12科、34属,较1972年的66种减少了28.8%;四季全部调查水域中出现的优势鱼种有圆吻鲴、大眼华鳊、黄颡、唇鱼骨、圆尾鮠、江黄颡、薄颌光唇鱼和鲤8种,其中圆吻鲴和大眼华鳊为常年优势种,其他6种为某一季节的优势种;不同季节优势度变化范围为0.578～0.747,以冬季最高;Margalef指数(D)介于2～4,Shannon指数(H)介于1～2,Pielou均匀度指数(J)介于0.3～0.6,依此判定瓯江干流丽水段渔业资源群落的多样性属于正常水平。群落季节更替指数和迁移指数揭示该流域鱼类群落结构具有明显季节性变化,而群落相似性指数(Jaccard指数和Sorenson指数)揭示3个生境的鱼类种群相似度均属于中等不相似。
In this paper, the dynamic variations of the fish community as well as the dominance, diversity index, and community structure of main fish species in the Lishui section （28°16′47.03″N-28°24′42.66″N, 119°42′31.41″E-119°57′13.03″E） of Oujiang River main stream were analyzed, based on the fish resources survey in March （spring）, June （summer）, September （autumn）, and December （winter）, 2009. There were 47 species of fishes, belonging to 5 orders, 12 families and 34 genera. Comparing with that in 1972, the fish species number in 2009 was decreased by 28.8%. A total of 8 dominant species, i.e., Distpechodon tumirostris, Sinibrama macrop, Pelteobagrus fulvidraco, Hemobarbus labeo, Leiocassis taeniatus, Pelteobagrus vachelli, Acrossocheilus wenchowensis, and Cyprinus carpio were detected, of which, D. tumirostris and S. macrops were dominant across 4 seasons, and the others were only dominant in one of 4 seasons. The dominance of the fish community varied from 0.578 to 0.747, being the highest in winter. The variation range of Margalef index （D）, Shannon index （H）, and Pielou index （J） was 2-4, 1-2, and 0.3-0.6, respectively, suggesting that the diversity and abundance of the fish community were at normal level. The seasonal turnover index and migration index showed that the fish community had obvious seasonal change, and the Jaccard index and Sorenson index indicated that the similarity of the fish community in 3 habitats was moderately dissimilar.
出处
《生态学杂志》
CAS
CSCD
北大核心
2010年第8期1585-1590,共6页
Chinese Journal of Ecology
基金
浙江省厅市会商资助项目(2007554)
关键词
鱼类资源
群落结构
生物多样性
季节变化
瓯江干流丽水段
fish resources
community structure
biodiversity
seasonal change
Lishui section of Oujiang River main stream
作者简介
原居林，男，1982年生，硕士。主要从事水域生态学方面的研究，发表论文6篇。E-mail：yuanjulin1982@163．com
通讯作者E-mail：zjmgq@163．com
