CAJ | 학술논문

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：哿明显的相关性，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。
대안경시남경림장장강연안탄지3년、8년화20년생인공양수임지상공간곤충군락적충군조성화다양성진행료조사관측。결과표명，재3충불동림령림분지간，지상공간곤충충군조성적차이표현위：재목일급분류단원조성상，3충불동림령림분구유흔고적공성；재과화충적단원상，불동림령림분지간적차이표현위3년생여20년생림분지간〉3년생여8년생림분지간〉8년생여20년생림분지간。수착림분림령적증가，림내지상공간곤충봉부도지수、Shannon-Wiener지수명현강저。불동림령림분지상공간곤충충군적균균도지수여림분림령몰：가명현적상관성，기중20년생림분곤충충군적균균도지수현저저우8년생화3년생적림분，이8년생화3년생림분：지간몰유현저차이。
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.