摘要
科尔沁沙地中小型土壤动物垂直分布５～１０ｃｍ层密度最高、０～５ｃｍ层最低；大型土壤动物随土层深度明显减少。季节动态表现为，中小型土壤动物春季密度最高、夏季最低、秋季又升高；大型土壤动物幼虫为春季密度最低，夏季达到最高，秋季又降低；成虫为春季密度较低，夏季达到最低点，秋季密度最高。生物量的变化规律为春季较低，夏季最高，秋季又降低。中小型土壤动物的多样性、丰富度、均匀性指数均较低，大型土壤动物则较高，群落结构趋向稳定。
The density of meso microfauna is the higest in 5￣10 cm soil layer and lower in 0￣5 cm soil layer and middle in 10￣15 cm layer. The density of macrofauna descendes rapidly when soil layer is going down. The seasonal dynamics of meso microfauna is the highest in spring, the lowest in summer and middle in autumn. The density of young macrofauna is the lowest in spring, the highest in summer and middle in autumn. The density of mature macrofauna is middle in spring, the lowest in summer and the highest in autumn. The seasonal dynamics of boimass is middle in spring, the highest in summer and the lowest in autumn. The diversity indexes of meso microfauna community is lower than that of macrofauna and the stability of macrofauna community is higher accordingly.
出处
《中国沙漠》
CSCD
北大核心
1999年第S1期111-115,共5页
Journal of Desert Research
关键词
土壤动物
垂直分布
季节动态
多样性
生物量
Soil animal\ Vertical distribution\ Seasonal dynamics\ Community variety\ Biomass
