【摘要】：【目的】研究不同土壤條件下落葉松人工林昆蟲群落結(jié)構(gòu)及動(dòng)態(tài)的差異,為森林經(jīng)營(yíng)管理、生物多樣性保護(hù)提供理論基礎(chǔ)和科學(xué)依據(jù)�！痉椒ā恳孕∨d安嶺涼水自然保護(hù)區(qū)內(nèi)封山育林狀態(tài)下落葉松人工林為研究對(duì)象,根據(jù)地形土壤條件,選擇埋藏潛育暗棕壤-落葉松人工林(A)、厚層埋藏暗棕壤-落葉松人工林(B)、暗棕壤性土-落葉松人工林(C)、典型暗棕壤-落葉松人工林(D)4種生境類型,分別設(shè)置3個(gè)20 m×20 m的樣地,采用掃網(wǎng)法、巴氏罐誘法、震落法、高枝剪標(biāo)準(zhǔn)枝法對(duì)樣地內(nèi)昆蟲群落進(jìn)行系統(tǒng)的調(diào)查�！窘Y(jié)果】共捕獲昆蟲樣本5 204頭,經(jīng)鑒定分屬10目77科250種,各生境均以雙翅目和膜翅目為優(yōu)勢(shì)類群,但所占比例具有較大差異。各生境昆蟲群落科級(jí)優(yōu)勢(shì)類群季節(jié)動(dòng)態(tài)也表現(xiàn)出較大的差異。聚類分析表明4種生境昆蟲群落歸為2類,A、B生境歸為一類,C、D生境歸為一類。不同生境間昆蟲群落物種多樣性指數(shù)和均勻度指數(shù)大小均表現(xiàn)為C生境A生境B生境D生境,豐富度指數(shù)大小表現(xiàn)為樣地B生境D生境A生境C生境,優(yōu)勢(shì)集中性指數(shù)大小表現(xiàn)為D生境B生境A生境C生境。時(shí)間序列上,B生境和D生境昆蟲群落物種多樣性指數(shù)與均勻度指數(shù)及豐富度指數(shù)均呈顯著的正相關(guān),但前者相關(guān)系數(shù)均顯著大于后者。各生境昆蟲群落中不同營(yíng)養(yǎng)類群物種數(shù)均表現(xiàn)為植食性類群中性類群捕食性類群寄生性類群,但各生境中不同營(yíng)養(yǎng)類群物種數(shù)所占比例具有明顯差異。各生境昆蟲群落相對(duì)穩(wěn)定性為B生境C生境D生境A生境。主分量分析表明對(duì)昆蟲群落變化起著主導(dǎo)作用的因子在各生境中具有較大差異�！窘Y(jié)論】不同土壤條件下落葉松人工林各昆蟲群落結(jié)構(gòu)動(dòng)態(tài)具有較大差異,昆蟲群落物種多樣性指數(shù)與豐富度指數(shù)正相關(guān)系數(shù)越大,群落穩(wěn)定性越強(qiáng),同時(shí)中性昆蟲對(duì)昆蟲群落相對(duì)穩(wěn)定性起到顯著的調(diào)控作用。4種生境中厚層埋藏暗棕壤落葉松人工林綜合環(huán)境條件最適宜昆蟲群落發(fā)生發(fā)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.
【作者單位】： 東北林業(yè)大學(xué)林學(xué)院;東北林業(yè)大學(xué)涼水自然保護(hù)區(qū);
【基金】：中央高�；究蒲袠I(yè)務(wù)費(fèi)專項(xiàng)資金(2572014BA06) 黑龍江省自然科學(xué)基金項(xiàng)目(ZD201404)
【分類號(hào)】：S718.7

【參考文獻(xiàn)】

相關(guān)期刊論文 前10條

1 劉哲強(qiáng);馬玲;焦s，

本文編號(hào)：2304864