民勤县耕地集约利用空间格局分析

The spatial pattern of cultivated land intensive utilization in Minqin county

运用熵值法和综合指数法计算民勤县各乡镇耕地集约利用度,并形成集约利用等级分布图,对各乡镇耕地集约利用度进行空间格局分析。结果表明:对耕地集约利用水平影响最大的准则层是耕地投入强度;对耕地集约利用水平影响最大的指标是单位耕地农作物产量;耕地集约利用度最高的是薛百乡,最低的是红沙岗镇;薛百乡、重兴乡处于高度集约区,大坝乡、收成乡处于中度集约区,昌宁乡等10个乡镇处于一般集约区,红沙岗镇等4个乡镇处于不集约区。

This study applied the entropy method and comprehensive index method to calculate townships cultivated land intensive utilization degrees of Minqin county in 2009,get grade distribution of cultivated land intensive utilization degrees.Then we analyzed townships cultivated land intensive utilization.The result show that in rule layer,cultivated land investment intensity affected cultivated land use intensity greatly.In the index layer,crop yields per unit area on the cultivated land had a great role.In all the towns,the highest degree area of cultivated land intensive use was Xuebai,the lowest was Hongshagang.The townships of Xuebai and Chongxing are in highly intensive utilization zone,the townships of Daba and Shoucheng belonged to moderate intensive use area,Changning and other 10 townships are in the general intensive use area,Hongshagang and other 3 townships belonged to not intensive use area.