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就近年来中国宜能非粮地研究方法的合理性进行分析,并确定各适宜性指标的适宜范围。首先总结利用土壤调查统计资料和应用遥感数据及地理信息系统(Geographic Information System,GIS)获取宜能非粮土地资源的方法,汇总这2个方法所用的调查统计资料和数据库,评价研究方法及其所用数据库的合理性。然后,讨论前人研究结果,提出更完善的宜能非粮地的适宜性指标评价体系,包括地面坡度、有效土层厚度、土壤质地、土壤碱化度、土壤含盐量、无霜期、≥10℃年积温、水分条件、排水条件、集中连片条件、生态条件和污染超标条件等,最后分析确定各指标适宜范围。
Based on the analysis of the reasonableness of the research methods of non-grain land in China in recent years, the suitable scope of each suitability index should be determined. Firstly, the methods of using soil survey data and remote sensing data and Geographic Information System (GIS) to obtain resources of non-grain land for Yineng should be summarized, and the survey statistical data and databases used in these two methods are summarized, and the research methods and their The rationality of the database used. Then, discussing the results of previous studies, we put forward a more complete appraisal system of suitability index of suitable non-food land, including slope, effective soil thickness, soil texture, soil alkalinity, soil salinity, frost-free period, ℃ accumulated temperature, water conditions, drainage conditions, the concentration of contiguous conditions, ecological conditions and excessive pollution conditions, the final analysis to determine the appropriate range of indicators.