绵阳市游仙区耕地质量等别更新分析

New Round of the Quality of Cultivated Land Classification Renewal——A Case Study in Youxian,Mianyang

利用ArcGIS工具,从有效土层厚度、表层土壤质地、剖面构型、土壤有机质含量、土壤pH、排水条件、坡度、灌溉保证率8个方面入手,通过对指定作物的农用地自然质量分的计算,从国家自然等别更新、国家利用等别更新、国家经济等别更新3个方面对游仙区耕地质量等别进行了分析。结果表明,相较于上一年,2014年游仙区耕地虽减少111.79 hm^2,但耕地等别总体等别保持一个平稳的态势,后期可通过加大对耕地的投入和耕作制度的改进,提高耕地级别。

Using ArcGIS software ,from eight aspects： soil thickness, soil texture, soil profile construct, soil organic matter content, soil pH, drainage condition, slope, irrigation assurance, from three aspects as national natural levels, countries use level, the national economic level, to calculate the designated cultivated land natural quality score, the classification of the cultivated land were analyzed. The results showed that the cultivated land in Youxian District was reduced 111.79 hectares in 2014 compared wlth last year, but the overall classification was main- tain a steady state. Later we could improve the classification of cultivated land through increased the investment in farmland and improvement of the farming system.