Characteristics of soil mite community structures in the mid-west plain, Jilin Province
The soil mites in the mid-west plain in Jilin Province were investigated with the emphasis laid on the community structure in relation to the types of land-use i. e. farm garden, farmland, Three-North Forest Shelterbelt. natural secondary forest and natural mowing pasture. The soil mites were extracted through Tullgren extractor and were identified to the genus level with the aid of microscope. A total of 16 443 soil mite individuals was captured and fell into 96 genera. Oppia and Scutaracus were the dominant groups that account for 24.12% of the total individuals. A considerable difference in the numbers of genera and individuals existed between the natural forest and other habitats affected by agricultural practice. The mites distributed evenly in the different layers of soil profile in all the habitats affected directly by humans in both samples collected in July and September. In these habitats affected intensively by agricultural activity during sampling date, more groups and individuals were cut down, and more diversities lost. These results suggest that the types of land use affect the species richness and abundance, and human activity has an impact on the soil mite community. The characteristics of the Oribatida community structures in different habitats were analyzed by using MGP, and Mesostigmata community by MI ( Maturity index) while Shannon-Wiener Index was used in analyzing the biodiversity of the mite community. The results also show that MGP Ⅰ proposed by Aoki is a sensitive parameter to monitor the seasonal fluctuations of Oribatida community, and MI index first used by Ruf could indicate the r-selected groups increase of Mesostigmata community fluenced by agri-activity in farm garden and farmland.
Soil mitesCommunity structureMGP analysisMI indexJilin Province
NETL
NSTL
万方数据
维普
