Effects of Cattle Grazing on Spatial Phytodiversity and Foraging Habitat Enrichment in Semi-natural Grasslands

放牧条件下半天然草地植物量的空间异质性高于空间均匀落叶条件和无落叶条件。放牧抑制空间均匀的优势，一些高大的草，并诱导发生空间异质的植物区系组成。放牧动物利用植被的空间异质性，土壤养分的轻微的空间偏差。有效牧草营养价值的空间异质性小于植物量和植物区系组成。

Spatial heterogeneity of phytomass in the semi-natural grassland was higher in a grazed condition than in both a condition with spatially uniform defoliation and a condition without defoliation. Grazing inhibited spatially homogeneous domination of a few tall grasses and induced to occur spatially heterogeneous floristic compositions. Grazing animals used spatially heterogeneously the vegetation, and slight spatial biases of soil nutrients were caused. Nutritive values of available herbage had less heterogeneous spatially than both the phytomass and the floristic composition.