不同草地的质量分类分析与决策评价研究

CLASSIFICATION AND DECISION-MAKING EVALUATION OF GRASSLANDS

The path analysis with 11 types of grasslands shows that rainfall is the key factor affecting vegetation cover degree, herbage yield and livestock capacity, and is positively correlated to cover degree and herbage yield, negatively correlated to livestock capacity. Dry degree mainly affect sward height and positively correlated to the later. The results calculated from Linear Distribution Algorithm (LDA) and Batch Clustering Algorithm (BCA) showed that the quality and climate potential are best for hilly grasslands and prairie grass-lands and worst for dry desert grasslands. A new algorithm for calculating weights is presented, the advan-tages and applying pespectives of LDA and BCA are discussed.