基于灰色关联法的甘南草地退化影响因素分析--以碌曲县为例

Study on Grassland Degraded Influencing Factors in Gannan based on Grey Correlation Analysis: A Case Study of Luqu County

科学合理地制订恢复和改善甘肃省碌曲县草地的措施,必须首先明确影响草地退化的因素中哪种影响力度最大。采用灰色关联法对碌曲县草地退化因素系统中母因素与子因素的关系密切程度进行定量分析,结果表明,人文因素是影响碌曲县草地退化的主导因素。影响碌曲县草地退化的人文因素可归纳为牧业结构调整因子、牧民家庭支出因子和牧业劳动人口因子三个因子。采用系统聚类分析法,对人文因素进行聚类,并对其影响作用进行定性分析,得知遏制草地退化的关键在于拓宽牧民家庭收入渠道、提高牧民收入等。

So as to work out measures to restore and improve the grassland in Gansu Province Luqu County, we should firstly make clear which influenced factor is the greatest one for the grassland degradation. In this paper the author use grey correlation analysis to carrying out quantitative analysis to Luqu County grassland degradation factor system, especially to figure out the close relationship degree between mother factor and sub-factors. The results show that the humane factors are the leading factors for Luqu County grassland degradation. The humane factors summed up as the following factors： animal husbandry structural adjustment factor, the herdsman family payment factor and the animal husbandry labouring population factor. Uses Hierarchical cluster analysis, carries on the qua!itative analysis to the humane factor and its influence function. Be informed that the key for preventing grassland degradation lies in expanding the herdsman household income channel, raising herdsman income and so on.