西北干旱区农业资源利用正效应因子分析--以塔里木河流域为例

以西北干旱区塔里木河流域为例,选取了9个指标,利用因子分析法针对人类对水土资源利用所产生的正效应进行了分析,结果表明,第一公因子在GDP、粮食产量、人口总数、牲畜头数、财政收入、耕地面积、农林牧等总产值和有效灌溉面积的载荷较高,说明这些指标可综合反映农业资源利用正效应之一,即人口环境经济容量;第二公因子在机电排灌面积上的载荷最高,说明机电排灌面积可反映水、土等环境容量。

Analysis on positive effects of agricultural resources in arid areas of northwest China--A case study of Tarim River Basin

In this paper,taking Tarim River Basin as a case,the positive effects of agricultural resources are studied by using 9 important indexes to assess the utilization of water and soil resources.It is discovered that the loading of the first common factor is high in GDP,grain yield,population,amount of livestock,financial income,farmland acreage,gross agricultural output and valid irrigated acreage,which can be used to reflect the capacity of population,environment and economy;the loading of the second common factor is high in electric irrigation and drainage acreage,which can be used to reflect the capacity of water and soil resources.