生境异质性对锡林郭勒自然保护区昆虫群落多样性的影响
文献类型: 中文期刊
关键词: 生境异质性; 昆虫群落; 生物多样性; 指示类群
期刊名称:植物保护
ISSN: 0529-1542
年卷期: 2025 年
页码:
收录情况: 北大核心(2023版) ; ; CSCD(2025-2026年度) ; ; 科技核心(2024版) ; ; 农林核心(2024版)
摘要: 昆虫是生态系统的重要指示类群,其群落特征能够灵敏反映环境变化。本研究以锡林郭勒草原国家级自然保护区的8种典型生境为研究对象,于2023年7月采用陷阱法开展昆虫群落调查。共采集昆虫2794头,隶属于7目42科134种。研究发现:山杏灌丛的Shannon-Wiener多样性指数最高,且与贝加尔针茅+线叶菊草原在 Shannon-Wiener多样性指数、Simpson优势度及Pielou均匀度指数上差异显著(P<0.05),山杨+白桦林与贝加尔针茅+线叶菊草原的Simpson优势度差异显著(P<0.05),禾草+莎草沼泽和贝加尔针茅+线叶菊草原的 Pielou 均匀度指数差异显著(P<0.05),各生境 Margalef丰富度指数无显著差异(P>0.05),但山杏灌丛物种丰富度最高;β多样性分析显示,沙地云杉林与山杏灌丛的昆虫群落相似性较高。除榆树疏林和山杏灌丛外,其余6种生境共存在14个特征指示类群(P<0.05)。研究证实生境异质性是影响昆虫群落构建的关键因素。本研究为保护区内生物多样性监测、进一步完善保护策略提供了重要依据。
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