应用生态学报2011，Vol.22Issue(11)：3011-3020,10.
哀牢山不同类型亚热带森林地表凋落物及土壤节肢动物群落特征
Characteristics of floor litter and soil arthropod community in different types of subtropical forest in Ailao Mountain of Yunnan, Southwest China
摘要
Abstract
By using line transect method, an investigation was conducted on the floor litter and soil arthropod community in a mid mountain wet evergreen broad-leaved forest, a mossy dwarf forest, and a Populus bonatii forest in Ailao Mountain of Yunnan in April ( dry and hot season) , June ( rainy season) , and December (dry and cold season), 2005. In both dry and rainy seasons, the existing floor litter mass, C storage, and C/N ratio in the three forests all increased in the order of mossy dwarf forest > P. Bonatii forest > evergreen broad-leaved forest, but the N storage had less difference. In the floor litter layer of the forests, Acari and Collembola were the dominant groups of soil arthropod community, while Diptera larvae, Coleoptera, ants, and Homoptera were the common groups. The Sorenson coefficients of soil arthropod community in the three forests were extremely great. No significant differences were observed in the soil arthropod density (ind · M-2) in the floor litter layer among the three forests, but the relative density (ind · G-1 ) of soil arthropods was higher in the evergreen broad-leaved forest and P. Bonatii forest than in the mossy dwarf forest. In the three forests, the density of soil arthropods was significantly higher in dry season than in rainy season, but the Shannon diversity index had less difference. There were significant positive correlations between the existing floor litter mass and the individual density (ind · M-2 ) and dominant groups of soil arthropod communities in dry and hot season ( April) , but negative correlations between the existing floor litter mass and the relative density (ind · G-1) of soil arthropod communities and Acari in dry and cold season (December). The individual densities of Collembola and Coleop-tera also had positive correlations with the N storage of the existing floor litter mass in the three forests. It was considered that the floor litter and the development of soil arthropod community in the litter layer of the subtropical forests in Ailao Mountain had a close relation with the vegetation structure of the forests, and the individual density and the diversity of the soil arthropod community were controlled by the floor litter, whereas the environmental factors such as temperature and moisture in the forests also had obvious effects on the seasonal dynamics of the individual density of the soil arthropods.关键词
凋落物/土壤节肢动物/生物多样性/亚热带森林/哀牢山Key words
litter/soil arthropod/biodiversity/subtropical forest/Ailao Mountain.分类
生物科学引用本文复制引用
杨赵,杨效东..哀牢山不同类型亚热带森林地表凋落物及土壤节肢动物群落特征[J].应用生态学报,2011,22(11):3011-3020,10.基金项目
中国科学院知识创新工程重要方向项目(KZCX2-YW-413)和国家自然科学基金项目(40671103)资助. （KZCX2-YW-413）
