昭苏马场草地质量评价最优指标的筛选  

Screening of the Most Optimal Index in Grassland Quality Evaluation of Zhaosu Horse Farm

作　　者：杨海宽[1] 安沙舟[1] 张荣华[1] 

机构地区：[1]新疆农业大学草业与环境科学学院/新疆草地资源与生态重点实验室,乌鲁木齐830052

出　　处：《新疆农业科学》2008年第4期750-753,共4页Xinjiang Agricultural Sciences

基　　金：新疆现代化畜牧业试验与示范项目"伊犁州生态经济型高效草业;畜牧业试验研究"

摘　　要：以昭苏马场不同草地类型为研究对象,在全面了解昭苏马场草地资源现状的基础上,通过主成分分析方法结合灰色系统理论的关联度分析方法,剖析影响昭苏马场草地质量的植被可食牧草产量、植被盖度、土壤容重、土壤含水量、土壤有机质、TN、TP、TKp、H 9个指标,并从中筛选最优评价指标。结果表明,土壤含水量、土壤有机质、植被盖度、地上生物量、土壤容重在草地质量评价中起主要作用,可作为评价昭苏马场草地质量的最优指标。The most optimal index influencing grassland quality of Zhaosu Horse Farm,such as vegetation edible forage production,vegetation cover,soil bulk density,soil moisture content,soil organic matter,TN,TP,TK and pH were analyzed on the basis of the current situation of grassland resources in Zhaosu Horse Farm.The various types of grassland were investigated by the principal component analysis method.The results showed that soil moisture content,soil organic matter,vegetation coverage,vegetation edible forage production,soil bulk density played major roles in the evaluation of the quality of grassland.

关 键 词：昭苏马场 草地质量 主成份分析 灰色关联度分析 

分 类 号：S812.4[农业科学—草业科学]