摘要
2010年5—10月,对银川市芦花台湿地昆虫群落组成和结构变化进行了调查,共采集昆虫10578只,隶属12目70科217种。根据营养水平和取食关系归为3个营养层(基位物种、中位物种和顶位物种)和7个功能团,分析了昆虫群落的物种、功能团和营养层多样性的时序动态及群落稳定性。结果表明,食花芽类昆虫、刺吸类昆虫和中性昆虫为昆虫群落的优势功能团,个体数量分别占总数量的16.01%、32.35%和33.33%;优势类群为蚜科和摇蚊科昆虫,个体数量分别占总数量的10.57%和21.27%。在不同季节,昆虫群落营养层丰富度表现出基位物种>中位物种>顶位物种的规律,不同功能集团的优势类群丰富度随季节变化明显。物种多样性、营养层多样性与功能团多样性之间的相关性均达到极显著水平(P<0.01),变化趋势一致。不同月份昆虫群落的相对稳定性波动较大,但随季节演替时序分明,恢复力稳定性较强。
In May-October, 2010, an investigation was conoucteu on me composHiun mtu .uLl,- tional structure of insect community in Luhuatai wetland of Yinchuan, Ningxia. A total of 10578 insect individuals were collected, belonging to 217 species, 70 families, and 12 orders. Accord- ing to the trophic level and feeding mode, three nutritional classes and seven functional groups were established. The temporal dynamics of the diversity in species, functional group, and nutri- tional class and the insect community stability were analyzed. The bud-eating insects, piercing- sucking insects, and neutral insects were the dominant functional groups in the insect communi- ty, accounting for 16.01% , 32.35%, and 33.33% of the total individuals, respectively. The dominant insect groups were aphids and chironomids, and their individual numbers occupied 10.57% and 21.27% of the total, respectively. In different seasons, the basal species of the in- sect community had the highest abundance, followed by the intermediate species, and the top species. The abundance of the dominant insect groups of different functional groups changed ob- viously with season. The species diversity and nutritional class diversity had significant correla- tions with the functional group diversity （P〈0.01）, and the functional group biodiversity and nutritional class diversity had the similar temporal variation trend as the species biodiversity. The relative stability of the insect community exhibited greater fluctuation during the period of this in- vestigation, but the recovery stability became stronger with the seasonal succession.
出处
《生态学杂志》
CAS
CSCD
北大核心
2013年第12期3268-3275,共8页
Chinese Journal of Ecology
基金
宁夏大学自然科学研究基金项目(ZR1125)资助
关键词
昆虫群落
营养结构
多样性与稳定性
芦花台湿地
银川
insect community
nutritional structure
biodiversity and stability
Lubuatai wet-land
Yinchuan.
