Abstract
The resource qualities of 11 natural grassland types in Zhaosu Horse Farm were evaluated using the theory and technology of grey relational analysis by the major parameters including edible herbage production,stocking capacity,forage coverage,soil moisture content,soil bulk density,soil organic matter,and soil nutrient content.The results show that mid-mountain meadow(Trisetum spicatum(L.) Richt+Phlomis oreophila Kar.et Kir.+ Herbarum variarum) and alpine meadow(Kobresia capillifolia(Decne.) Clarke+Alchemilla tianschanica Juz.+ Herbarum variorum) had the best resource quality,the correlating degree was 0.736 and 0.691,respectively.The valley meadow(Carex oxyleuca V.Krecz+Bromus inermis Leyss.) and the low mountain hill grassland(Festuca ovina L.+Carex liparocarpos Gaudin+Stipa capillata L.;F.ovina+S.capillata+C.liparocarpos;S.capillata+C.liparocarpos+Artemisia frigida Willd.) had the worst resource quality,the correlating degree was 0.475,0.461,0.475,and 0.465,respectively.Based on the analysis results,the quality classification scheme of natural grassland in Zhaosu Horse Farm was put forward to five grades which provided a basis to the full,effective,and rational use of the grassland resources of Zhaosu Horse Farm in the future.
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