不同土壤环境下落叶松人工林昆虫群落结构及动态的差异
发布时间：2018-11-01 19:21
【摘要】：【目的】研究不同土壤条件下落叶松人工林昆虫群落结构及动态的差异,为森林经营管理、生物多样性保护提供理论基础和科学依据。【方法】以小兴安岭凉水自然保护区内封山育林状态下落叶松人工林为研究对象,根据地形土壤条件,选择埋藏潜育暗棕壤-落叶松人工林(A)、厚层埋藏暗棕壤-落叶松人工林(B)、暗棕壤性土-落叶松人工林(C)、典型暗棕壤-落叶松人工林(D)4种生境类型,分别设置3个20 m×20 m的样地,采用扫网法、巴氏罐诱法、震落法、高枝剪标准枝法对样地内昆虫群落进行系统的调查。【结果】共捕获昆虫样本5 204头,经鉴定分属10目77科250种,各生境均以双翅目和膜翅目为优势类群,但所占比例具有较大差异。各生境昆虫群落科级优势类群季节动态也表现出较大的差异。聚类分析表明4种生境昆虫群落归为2类,A、B生境归为一类,C、D生境归为一类。不同生境间昆虫群落物种多样性指数和均匀度指数大小均表现为C生境A生境B生境D生境,丰富度指数大小表现为样地B生境D生境A生境C生境,优势集中性指数大小表现为D生境B生境A生境C生境。时间序列上,B生境和D生境昆虫群落物种多样性指数与均匀度指数及丰富度指数均呈显著的正相关,但前者相关系数均显著大于后者。各生境昆虫群落中不同营养类群物种数均表现为植食性类群中性类群捕食性类群寄生性类群,但各生境中不同营养类群物种数所占比例具有明显差异。各生境昆虫群落相对稳定性为B生境C生境D生境A生境。主分量分析表明对昆虫群落变化起着主导作用的因子在各生境中具有较大差异。【结论】不同土壤条件下落叶松人工林各昆虫群落结构动态具有较大差异,昆虫群落物种多样性指数与丰富度指数正相关系数越大,群落稳定性越强,同时中性昆虫对昆虫群落相对稳定性起到显著的调控作用。4种生境中厚层埋藏暗棕壤落叶松人工林综合环境条件最适宜昆虫群落发生发展。
[Abstract]:[objective] to study the difference of insect community structure and dynamics in larch plantation under different soil conditions. [methods] Larix gmelinii plantation in Liangshui Nature Reserve of Xiaoxinganling was used as the research object, according to the topographic and soil conditions. Dark brown loess-larch plantation (A), thick layer buried dark brown soil-larch plantation (B), dark brown loam soil-larch plantation (C), typical dark brown soil-larch plantation (D) four habitat types. Three sample plots of 20 m 脳 20 m were set up, and the insect communities in the sample plots were systematically investigated by means of sweep net method, Babbitt pot trap method, shock drop method and high branch shearing standard branch method. [results] A total of 5 204 insect samples were captured. They belong to 10 orders, 77 families and 250 species. Diptera and Hymenoptera are the dominant groups in each habitat, but the proportion is quite different. The seasonal dynamics of dominant taxa of insect communities in different habitats also showed great differences. Cluster analysis showed that the insect communities of four habitats were classified into 2 groups, Anb habitats were classified as one group, and CnD habitats were classified as one class. The species diversity index and evenness index of insect communities in different habitats were C habitat A habitat B habitat D habitat, and richness index was B habitat D habitat A habitat C habitat. The dominant concentration index was expressed as D habitat B habitat A habitat C habitat. In time series, there was a significant positive correlation between species diversity index and evenness index and richness index of insect communities in habitats B and D, but the correlation coefficients of the former were significantly higher than those of the latter. The species numbers of different vegetative groups in insect communities in different habitats were plant herbivorous groups, neutral groups, predatory groups, parasitic groups, but the proportion of species of different nutrient groups in different habitats was significantly different. The relative stability of insect communities in each habitat is B habitat C habitat D habitat A habitat. Principal component analysis (PCA) showed that the factors that played a leading role in insect community change were different in different habitats. [conclusion] the structural dynamics of insect communities in larch plantations were different under different soil conditions. The greater the positive correlation coefficient between species diversity index and richness index, the stronger the stability of insect community. At the same time, neutral insects play a significant role in regulating the relative stability of insect communities.
【作者单位】： 东北林业大学林学院;东北林业大学凉水自然保护区;
【基金】：中央高校基本科研业务费专项资金(2572014BA06) 黑龙江省自然科学基金项目(ZD201404)
【分类号】：S718.7
[Abstract]:[objective] to study the difference of insect community structure and dynamics in larch plantation under different soil conditions. [methods] Larix gmelinii plantation in Liangshui Nature Reserve of Xiaoxinganling was used as the research object, according to the topographic and soil conditions. Dark brown loess-larch plantation (A), thick layer buried dark brown soil-larch plantation (B), dark brown loam soil-larch plantation (C), typical dark brown soil-larch plantation (D) four habitat types. Three sample plots of 20 m 脳 20 m were set up, and the insect communities in the sample plots were systematically investigated by means of sweep net method, Babbitt pot trap method, shock drop method and high branch shearing standard branch method. [results] A total of 5 204 insect samples were captured. They belong to 10 orders, 77 families and 250 species. Diptera and Hymenoptera are the dominant groups in each habitat, but the proportion is quite different. The seasonal dynamics of dominant taxa of insect communities in different habitats also showed great differences. Cluster analysis showed that the insect communities of four habitats were classified into 2 groups, Anb habitats were classified as one group, and CnD habitats were classified as one class. The species diversity index and evenness index of insect communities in different habitats were C habitat A habitat B habitat D habitat, and richness index was B habitat D habitat A habitat C habitat. The dominant concentration index was expressed as D habitat B habitat A habitat C habitat. In time series, there was a significant positive correlation between species diversity index and evenness index and richness index of insect communities in habitats B and D, but the correlation coefficients of the former were significantly higher than those of the latter. The species numbers of different vegetative groups in insect communities in different habitats were plant herbivorous groups, neutral groups, predatory groups, parasitic groups, but the proportion of species of different nutrient groups in different habitats was significantly different. The relative stability of insect communities in each habitat is B habitat C habitat D habitat A habitat. Principal component analysis (PCA) showed that the factors that played a leading role in insect community change were different in different habitats. [conclusion] the structural dynamics of insect communities in larch plantations were different under different soil conditions. The greater the positive correlation coefficient between species diversity index and richness index, the stronger the stability of insect community. At the same time, neutral insects play a significant role in regulating the relative stability of insect communities.
【作者单位】： 东北林业大学林学院;东北林业大学凉水自然保护区;
【基金】：中央高校基本科研业务费专项资金(2572014BA06) 黑龙江省自然科学基金项目(ZD201404)
【分类号】：S718.7
【参考文献】
相关期刊论文 前10条
1 刘哲强;马玲;焦s，
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