摘要
讨论了由DEM生成河网过程中所用的填平和主干河道数字化的方法,通过填平方法,解决了由洼地引起的河网不连续的问题;而对主干河道进行数字化处理,则解决了平坦地区主干河道偏离其自然位置的问题。经过这些处理后生成的河网,与实际情况比较接近,从而使水文要素的模拟更具有实际意义。
The methods of filling and leveling up and digitizing the main channel during the creating of the net of river based on DEM were discussed in the paper.The question of the incontinuity of the river caused by the low-lying can be resolved by using the method of filling and leveling up the low-lying.The question of the main channel may depart its natural position in the plat can be resolved through digitizing the main channel.Then,the net of river dealt by these methods is similar to the practical river net.Thereby the simulation results of hydrological elements will be more precise.
出处
《水文》
CSCD
北大核心
2002年第4期8-10,52,共4页
Journal of China Hydrology
基金
国家重点基础研究项目(G1999043400)
国家自然科学基金资助项目(49794030)
