摘要
11类草地的通径分析结果表明,降雨为影响草地覆盖度、产草量及载畜量的关键因素;雨量与覆盖度、产草量成正比,与载畜量成反比,干燥度主要影响草层高度且与后者成正比。线性分配决策法和按批修改聚类法的结果说明,草甸草地类与草原草地类的质量效益和自然效益均属良好,干荒漠草地类两者均最差。本文也给出一种择权方法;讨论了决策方法和按批修改法的特点与应用前景。
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.
出处
《草业科学》
CAS
CSCD
北大核心
1992年第5期45-48,共4页
Pratacultural Science
关键词
草地
质量
分类
: grasslands classification
decision-making
evaluation
