饲用植物资源在我国天然草地上分布特征

Distribution of Forage Plant Resources in Grassl and of China

我国词用植物资源丰富，种类繁多，是草地资源的主要组成部分，但不同类群的饲用植物在草地上的地位和作用不同。根据全国草地资源调查研究资料分析，禾本科饲用植物是构成我国天然草地的主体，饲用植物价值最大；豆科饲用植物种类多、营养丰富，在草群中参与度低；莎草科饲用植物在高寒地区草地上占优势；杂类草数量多、分布广，除少数种类外，在草群中多为伴生种类。

bundant forage plants of various species are the main component of the grassland re-sources.Different forage plants play different roles in grassland. Based on the data from the survey on the grassland resource,in China,forage plants in natural grassland are of the characteristics as follows:plant of Graminae is the major group in natural grassland,and its feeding value is the highest;plant of Leguminosae is of abundant species with high nutrition value and low participating extent in swards; plant of Cyperaceae occu-pied an absolute dominant role in alpine regions,the number of forbs are high and they widelv distribute in various haabitats. Forbs are often companion species in many swards.