历史时期耕地空间分布诊断方法研究

Study on the method of diagnose the plowland spacial distribution in historical era

历史时期耕地分布诊断主要是根据土地自身的光、热、水、土等自然条件和人口、居民地、道路等社会经济条件以及政策体制等条件,来判断没有卫星遥感信息源的历史时期,某地区耕地空间分布状况。耕地分布诊断不能完全准确地确定当时是否是耕地,但它可以判断某一块土地,在当时是否具有耕地分布的条件及其耕地分布概率的大小。对黑龙江省大庆市杜尔伯特蒙古族自治县50年代耕地分布进行诊断,结果为该区当时有耕地7.84万hm2;开发力度较大的乡镇有泰康镇、他拉哈镇、腰新乡;开发力度不大的乡镇有林牧畜场、江湾乡、烟筒屯镇,诊断结果比较切合实际。图1,表3,参10。

The access of the plowland distribution in historical era was to judge the plowland spacial distribution in some area without satellitic remote sense sources based on the natural conditions as light, heat, water, and soil of the soil itself and social and economic conditions as populations, resident fields, and roads and the policies and system.Although this method could not ascertain weather any land was plowland at that time, but it could judge weather the land had the conditions of plowland distribution and probability of plowland distribution.Plowland distribution in 1950s in Doerbert Innermongolia Autonomy county was accessed in this paper. The accessed results showed that there were 78400hm^2 in this county in 1950s.It also showed that Taikang, Talaha, and Yaoxin towns were exploited mere and Linmucbu Field, Yantongtun and Jiangwan towns were exploited less. The diagnosed results confirmed with the practical conditions.