营造林矢量数据重叠问题处理流程研究

Research on Processing Flow of Vector Data Overlapping in Afforestation

为检查贵州省各县级林业主管部门上交的2014和2017年度营造林矢量数据库中存在的小班重叠问题,利用ArcGIS软件中的相交、空间连接、属性表运算等工具,对营造林矢量数据进行图形检查、删除多余记录、重叠认定及面积平差等一系列处理,精准查找出工程重复地块,并计算出重叠的上报面积,减轻省级核查内业处理工作量,为县级林业主管部门进行整改提供数据支撑。

In order to check the overlapping problem of sub-compartments in the vector database of afforestation submitted by forestry authorities at county level in Guizhou Province in 2014 and 2017,the tools of intersection,spatial connection and attribute table calculation in ArcGIS software were used to check the vector data of afforestation graphically,delete the redundant records,identify the overlap,adjust the area,accurately find out the duplicate project plots,and calculate the overlapping area,which reduced the verification interior workload at provincial level and provided data support for county forestry authorities.