Title: Effects of Grassland Caterpillars on Plant Community Structure of Alpine Kobresia Meadows and Soil Properties
Abstract: [Objective] To study the relationship between the grassland caterpillars at different Hazard levels and the structure of alpine Kobresia meadow or soil properties. [Methods] A total of ten plots (20 m × 20 m) were chosen. In each plot five 5 m × 5 m little plots were randomly selected and six 0.25 m × 0.25 m sample plots were then selected in each little plot. The biomass,vegetation height,grass-layer thickness,bare land area,soil moisture and total vegetation cover were determined. Data were collected by Excel 2003 and statistically analyzed by SPSS 13.0 software. [Result] The results were showed that there was a significant difference (P0.05) between the grassland caterpillars at different Hazard levels and the structure of alpine Kobresia meadow or soil feature. [Conclusion] With the increase of grassland caterpillar density,the plant community structure of alpine Kobresia meadows change from sedge family-dominant community to the forbs-dominant community.
Publication Year: 2010
Publication Date: 2010-01-01
Language: en
Type: article
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