挠力河自然保护区浮游动物群落结构特征

Community Structure Characteristic of Zooplankton in Naoli River Nature Reserve

摘要: 湿地具有保护土壤、涵养水源、保护生物多样性、维护区域生态系统平衡等功能，是我国经济和社会发展的重要支撑资源之一。为研究挠力河自然保护区退耕湿地浮游动物群落结构特征，本研究分别于2020年夏季(7月)和秋季(10月)在保护区内选取18个采样点进行采样鉴定与检测，分析讨论了挠力河自然保护区浮游动物群落结构、多样性及其时空差异。共鉴定到浮游动物163种，其中夏季123种，秋季114种，其中轮虫种类相对较多，夏季和秋季浮游动物物种组成及物种数无显著性差异。不同季节优势种略有不同，丰度时空差异较大，各退耕湿地类型平均丰度秋季大于夏季，生物多样性指数在夏季为早期恢复湿地 > 近期恢复湿地 > 自然湿地，秋季自然湿地 > 早期恢复湿地 > 近期恢复湿地。

Abstract: Wetland has the function of protecting soil, nourishing water, preserving biodiversity, and maintaining regional ecosystem balance, and is one of the important support resources for China’s economic and social development. In this paper, in order to study the community structure characteristics of zooplankton in the retired farmland wetland of Naoli River Nature Reserve, 18 sampling sites were selected in summer (July) and autumn (October) of 2020, respectively for sampling identification and detection, and the community structure, diversity and spatial and temporal differences of zooplankton in Naoli River Nature Reserve were analyzed and discussed. A total of 163 species of zooplankton were identified, including 123 species in summer and 114 species in autumn, among which there were relatively many species of rotifers. There was no significant difference in species composition and species number of zooplankton between summer and autumn. The dominant species were slightly different in different seasons, and the spatial and temporal differences in abundance were large. The average abundance of each converted wetland type was higher in autumn than in summer. The biodiversity index in summer was early restored wetland > recently restored wetland > natural wetland, with autumn of natural wetland > early restored wetland > recently restored wetland.