Effect of Grazing Disturbance on Plant Functional Group and Community Structure of Meadow Community in Kanas Scenic Area
Based on ascertaining the gradient of grazing disturbance, the effect of different grazing disturbance on the plant functional group composition and community structure of the meadow community were studied by using important value of plant functional group, plant functional group richness, number of species including each plant functional group, coefficient of variation in biomass at the levels of community and plant functional group, coefficient of community structure variation (CSV) and community dominance index. The results showed that with the increase of grazing disturbance intensities, the forbs were replaced by the perennial bunch grasses, annuals and biennials which became the dominant functional group in the meadow community. The perennial rhizome grasses and legumes of lacking trampling and ingestion resistance gradually disappeared, and the functional group diversity significantly decreased with the increase of grazing disturbance intensities The community structure significantly changed because of the production of functional redundancy in the inner functional group and the transformation of functional group role in the whole community. The community stability significantly decreased under unreasonable grazing disturbance.
Grazing disturbancePlant functional groupCommunity structureMeadow communityKanas scenic area
NETL
NSTL
万方数据
维普
