制图综合基础上的农村居民地获取方法

Principles and Methods of Rural Residential Generalization

由于农村居民地数量多、分布散、形态不规则,直接采集居民地边界数据费时费力,该文以地理国情普查数据为基础,提出利用平均斑块面积确定距离阈值的方法获取农村居民地范围。该方法基于2013年地理国情普查数据,在获取平均斑块面积的基础上,通过开方根确定距离阈值,实现临近多边形的聚合;同时,结合利用线面转换方法实现孤岛多边形的处理。选取河北省迁西县东荒裕镇为实验区,基于制图综合方法获取各村居民地,并利用对比分析法等分析结果的合理性。

Acquiring rural residential area is very important for protecting farmland. But it is laborious and time-consuming. The first national geographical conditions census provides chances for case study with high precision data of land cover. Therefore,taking Donghuangyu town as the experimental area,this paper focuses on the combination of neighbor parcels giving two operations which are advancing the average area method to aggregate land parcel and using line-polygon conformation method to deal with isolated polygons. Finally, the rationality of outcome is analysed by comparison.