英文标题
Threshold Value Research about Catchment Area of Drainage Network of Hetao Irrigated Area
英文摘要
The accuracy extraction of basins stream cision and the the threshold value of catchment area. ital stream digital network basically depends on how digital network usually is related to the DEM pre- In a givend DEM map, the precision of the dig- to set the threshold value of the catchment area.This paper first introduces several determine method of t the threshold value , then apply the ＂river network density＂ method to the extraction of drainage network for hetao irrigated area . The results show that the method can be used in reasonable network extraction for drainage network of irrigation.
翻译关键词
DEM
Threshold value of catchment
Hetao irrigated area
获取号
WF:perioarticalslkjyjj201202011
