摘要
耕地坡度级数据是查清耕地、基本农田数量、质量和空间分布状况的重要指标,也是测算耕地田坎系数的基础和依据。本文以辽宁省第三次土地调查坡度分级图制作为例,阐述了一种制作坡度分级图的技术方法,并对微小图斑合并到邻接非同值面的技术难题进行研究,提出了一种定向融合的方法。通过试验,这种方法能够解决坡度分级图制作过程中微小图斑合并到邻接非同值面问题。研究成果为同类坡度分级图制作提供重要参考。
Cultivated land slope-level data is an important indicator for ascertaining the quantity,quality,and spatial distribution of cultivated land and basic farmland.It is also the basis and basis for calculating the coefficient of cultivated land.Taking the third grade survey of land survey in Liaoning Province as an example,this paper elaborates a technical method for making graded grade maps,studies the technical problems of merging tiny patches into adjacent non-iso surfaces and proposing directional fusion approach.Through experiments,this method can solve the problem of merging small patches into adjacent non-iso surfaces in the process of making graded maps.The research results provide an important reference for the production of similar slope classification maps.
作者
陆平
LU Ping(Liaoning Natural Resources Service Center the Basis Surveying and Mapping Institute of Liaoning Province,Jinzhou Liaoning,121000,China)
出处
《北京测绘》
2020年第8期1071-1074,共4页
Beijing Surveying and Mapping
