The Effect Of Seasonal Break-pastoral On Community Characteristics And Nutrient Content Of Stipa Breviflora

Seasonal animal husbandry is the important content of the grass adaptive management.The test studies the effect of seasonal break-pastoral on community characteristics and nutrient content of Stipa breviflora in Inner Mongolia during2010-2013. Compares the annual spring grazing, grazing and grazing, the summer autumn grazing community characteristics and the change of plant nutrients.The results are as follows:1. The main plant population characteristics have higher stable value with seasonal break-pastoral. Seasonal break-pastoral can improve each index of community characteristics. Break-pastoral in spring+heavy grazing in summer+heavy grazing in autnmn are better, above-ground biomass community of main plant is higher with the treatment of break-pastoral in spring+light grazing in summer+light grazing in autumn.2. Seasonal break-pastoral can make the coverage of functional groups has a higher stability value, especially in the treatment of heavy grazing in spring+heavy grazing in summer+break-pastoral in autnmn. At the same time, seasonal break-pastoral can also improve above-ground biomass of community and functional groups. The mutual compensation functions of functional group can ensure above-ground biomass of community in a stable state.3. With the help of seasonal break-pastoral, the uniformity and diversity of plant community is improved and the richness is reduced.4. The spring break-pastoral is better for accumulation of plant nutrients, such as crude protein, Crude fat and crude ash, which can meet the balance between the livestock number and plant nutrition content.5. The regulating the way of break-pastoral in spring+light grazing in summer+light grazing in autumn and break-pastoral in spring+heavy grazing in summer+heavy grazing in autumn is more suitable for practical production.