Spatial Pattern of Dominant Species under Mowing Management in Typical Steppe
Mowing is one of the primary grassland management practices.Exploring its spatial patterns of population in mowing communities is important.This study aimed to explore the spatial distribution patterns of populations in mowing communities,focusing on three dominant plant spe-cies(Leymus chinensis,Stipa grandis,and Cleistogenes squarrosa)within a typical grassland com-munity under mowing management.Point pattern analysis with various null models was employed to explore these patterns.The results showed that:(1)All three species(L.chinensis,S.grandis,and C.squarrosa)exhibited small-scale aggregation distribution based on the homogeneous Poisson model.This aggregation pattern was effectively described by the Poisson cluster model,suggesting limited dispersal of population reproduction as the primary drive of aggregation.(2)Bivariate homo-geneous Poisson model revealed negative associations between L.chinensis and S.grandis,and between S.grandis and C.squarrosa,at small scales.Our findings suggested potential resource com-petition between these species pairs.Conversely,a positive association observed species between L.chinensis and C.squarrosa at small scales indicated no evidence of resource competition between these two species.
万方数据
维普
