昭苏马场草地质量评价最优指标的筛选

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、TK、pH 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.

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

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.