长江中下游滩地杨树林昆虫多样性的初步研究  

Study on the Insect Diversity in Marshland Poplar Plantations in the Middle and Lower Reaches of Yangtze River

作　　者：刘桂华[1] 杨春材[1] 

机构地区：[1]安徽农业大学林学与园林学院,合肥230036

出　　处：《安徽林业科技》2012年第2期7-10,30,共5页Anhui Forestry Science and Technology

基　　金：国家"十二五"林业生态科技工程项目"低丘冈地林业血防生态安全体系构建技术研究与示范"(2011BAD38B0702)

摘　　要：对安庆市南埂林场长江沿岸滩地3年、8年和20年生人工杨树林地上空间昆虫群落的种群组成和多样性进行了调查观测。结果表明,在3种不同林龄林分之间,地上空间昆虫种群组成的差异表现为:在目一级分类单元组成上,3种不同林龄林分具有很高的共性;在科和种的单元上,不同林龄林分之间的差异表现为3年生与20年生林分之间>3年生与8年生林分之间>8年生与20年生林分之间。随着林分林龄的增加,林内地上空间昆虫丰富度指数、Shannon-Wiener指数明显降低。不同林龄林分地上空间昆虫种群的均匀度指数与林分林龄没有明显的相关性,其中20年生林分昆虫种群的均匀度指数显著低于8年生和3年生的林分,而8年生和3年生林分之间没有显著差异。In this paper the population compositions and diversities of the insect communities in rnarshland poplar plantations aged 3, 8 and 20 along Yangtze River on Nangeng Forest Farm of Anqing City were investigated and observed. The results showed that the ground and aerial insect population compositions of the 3 different-aged stands were quite similar at the taxonomical unit of Order, and at the units of Family and Species, the differentiation of the insect population compositions between different-aged stands is as follows： that between stands aged 3 and 20〉that between t^tands aged 3 and 8〉that among stands aged 8 and 20. With the increase of the stand ages, the ground and aerial insect species richness index and Shannon-Wiener diversity index in the poplar plantations decreased significantly. There was no significant correlation between the uniformity index of the ground and aerial insect populations and stand ages in different-aged stands. The insect population uniformity index in stands aged 20 is significantly lower than the indexes in stands aged 8 and 3, but there is no significant difference between the insect population uniformity indexes in stands aged 8 and 3.

关 键 词：滩地 杨树林 昆虫 多样性指数 食物链 

分 类 号：Q968[生物学—昆虫学]