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分别于2005年4月(干热季)、6月(雨季)和12月(干热季),采用样线法对哀牢山中山湿性常绿阔叶林、山顶苔藓矮林和滇山杨次生林地表凋落物及其中的土壤节肢动物群落进行了调查.结果表明:凋落物现存总量、C储量和C/N在干、湿季均表现为苔藓矮林>滇山杨林>常绿阔叶林,N储量差异不大.蜱螨目和弹尾目是3林地凋落物层节肢动物群落的优势类群,双翅目幼虫、鞘翅目、蚁类和同翅目为常见类群,3林地凋落物层土壤节肢动物群落相似性系数极高.3林地凋落物层土壤节肢动物群落密度(ind·m-2)没有显著差异,但相对密度(ind·g-1)呈现出常绿阔叶林和滇山杨林显著高于苔藓矮林;土壤节肢动物密度季节变化呈现干季(4月和12月)显著高于雨季(6月),群落香农多样性指数差异不显著.干热季(4月)3林地枯枝落叶现存量与其土壤节肢动物群落和主要类群密度呈显著正相关关系,而在干冷季(12月)凋落物总现存量与其土壤节肢动物群落及蜱螨目相对密度则呈显著负相关关系;弹尾目和鞘翅目密度与地表凋落物层的N储量也有显著的正相关关系.哀牢山亚热带森林凋落物及其土壤节肢动物群落的发展与森林植被结构密切相关,其群落个体数量和多样性受森林地表凋落物的调控,但林内其他环境因素如温湿度对森林凋落物层土壤动物个体数的季节变动也有明显影响.
The wetland evergreen broad-leaved forest in mid-Ailao Mountain, the mossy forest in mountainous top and the poplar of Populus yunnanensis were collected in April 2005 (dry and hot season), June (rainy season) and December (dry and hot season) The litter of secondary forestland and the soil arthropod community were investigated.The results showed that the total amount of litterfall, C reserves and C / N in dry and wet seasons were mossy dwarf forest> yangshan forest> evergreen broadleaved forest There was no significant difference in the reserves of Yulin and N, and Acarina and Coccinella were the predominant arthropod community in the litter layer of 3 forest litter, with Diptera larvae, Coleoptera, ants and Homoptera as common groups, 3 litters The soil arthropod community had a very high similarity coefficient.3 The density of soil arthropod communities in forest litter layer (ind · m-2) was not significantly different, but the relative density (ind · g-1) The Populus davidiana plantation was significantly higher than the mossy dwarf forest. The seasonal changes of soil arthropod density showed that dry season (April and December) was significantly higher than that in the rainy season (June), and the difference was not significant Month) 3 There was a significant positive correlation between the amount of litterfall and the density of soil arthropod community and major taxa in forestland, There was a significant negative correlation between total litterfall stock and relative density of soil arthropod community and Acarina in the season (December). There was also a significant positive correlation between the density of Phalaenopsis and Coleoptera and the N reserves of litter layer. The development of litter and its soil arthropod communities in the subalpine forest is closely related to the structure of forest vegetation. The number and diversity of individuals in the communities are controlled by forest litter, but other environmental factors, such as temperature and humidity, Seasonal changes in the number of animals also have a significant impact.