马尾松人工林火烧迹地不同恢复阶段中小型土壤节肢动物多样性  

Soil meso-and micro arthropod community diversity in the burned areas of Pinus massoniana plantation at different restoration stages

作　　者：杨大星[1] 杨茂发[1] 徐进[1] 尚小丽[1] 

机构地区：[1]贵州大学昆虫研究所,贵州山地农业病虫害重点实验室,贵阳550025

出　　处：《生态学报》2013年第8期2531-2544,共14页Acta Ecologica Sinica

基　　金：贵州省农业科技攻关项目(黔科合NY字[2010]3079号)资助)

摘　　要：为探明喀斯特地区马尾松人工林火烧迹地不同恢复阶段中小型土壤节肢动物多样性,2011年10月(秋季)和2012年2月(冬季)对火烧后恢复1.5个月(RS1)、1.5年(RS2)的马尾松人工林迹地和马尾松人工林(CK)各进行了两次调查。共获得中小型土壤节肢动物15704只,隶属7纲13目89科134类。研究结果表明,马尾松人工林迹地中小型土壤节肢动物类群数、个体密度、多样性和相似性均随恢复时间的增加而增加;类群数和个体密度与全钾显著相关;在季节变化上,RS1个体密度冬季显著高于秋季,RS2和CK类群数、个体密度和多样性冬季显著高于秋季。结果说明,随着恢复时间的增加,喀斯特马尾松人工林火烧迹地中小型土壤节肢动物群落结构发生明显改变,趋于复杂,稳定性提高,季节敏感性增加。Guizhou province, located on the center of southwestern Karst region, is an ecological fragile zone. Fire is one of the important factors that lead to degradation of Karst ecosystem, but the effect of fire disturbance on the structure and diversity of the below-ground soil biota is little known. In order to examine the structure and diversity variation of soil mesoand micro arthropod in different restoration stages of Pit, us massoniana plantation after burned, investigations were conducted on forests after 1.5 months （ RS1 ） burning, 1. 5 years （ RS2 ） burning and unburned Pinus massoniana plantation （CK） in October （ Autumn）, 2011 and February （ Winter）, 2012, respectively. The method of Tullgren was used to extract soil meso- and micro arthropod from soil samples. A total of 15704 individuals, belonging to 7 classes, 13 orders, 89 families and 134 groups, were extracted from the soil. The soil meso- and miero arthropod eommunity showed typical zonal characteristics compared with other localities in China. Oppiella and Aenictus were the dominant groups of the soil meso-and micro arthropod community in burned areas, account for 35.93%. The community taxonomic richness,density and Margalef index （D） of soil meso- and micro arthropod increased significantly with the increasing of the recovery time in Autumn and Winter （P〈0.01）. The Shannon-wiener index （H＇） was not significantly changed in Autumn （P〉0. 05 ） ,but increased significantly in Winter （P〈0. 001 ）. Simpson index （S） decreased significantly with the increasing of the recovery time in Autumn and Winter （P〈0. 001 ）. Pielou index （E） has not significantly changed in Autumn and Winter （ P 〉 O. 05 ）. Furthermore, the coefficient of Sorenson suggested that the recovery time had significant effect on taxonomic composition of soil meso- and micro arthropod communities in Autumn and Winter. Pearson correlation analysis showed the taxonomic group and individual density of the community had a signif

关 键 词：喀斯特地区 马尾松人工林 火烧迹地 土壤动物 

分 类 号：S714[农业科学—林学]