黄土丘陵沟壑区沟谷网络自动制图技术研究.pdf

黄土丘陵沟壑区沟谷网络自动制图技术研究.PDF3
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第 27 卷第 2 期测绘学报 V o l. 27, N o. 2
1998 年 5 月 A CTA GEODA ET ICA et CA R TO GRA PH ICA S IN ICA M ay, 1998
黄3 土丘陵2 沟2 壑区沟2 谷2 网络自动制图技术研究
闾国年钱亚东陈钟明
(南京师范大学地理科学学院, 南京, 210097)
STUDY OF AUTOM ATED M APP ING OF WORK IN
H ILLY LOESS REGION
L u Guon ian, Q ian Yadong, Chen Zhongm ing
(T he Colleg e of Geog rap hy S cience, N anj ing N orm al U niversity , N anj ing , 210097)
Abstract T he key technique of m app ing of wo rk in hilly loess region is the autom ated
extraction technique of the wo rk. Considering the difference of wo rk and
wo rk, the autho rs developed a m ethod described in this paper that bined of hy
dro logically based m ethod and mo rpho logically based m ethod, w hich have been imp roved. In this
paper, the autho rs p resent an algo rithm by w hich the wo rk is extracted autom atically
fo rm the grid D EM ofW angjiagou in L ishi, Shanxi, w here is located in typ ical hilly loess region in
loess p lateau, and the final results is in acco rdance w ith the real condition of the experim ent area.
Keywords H illy loess region in L oess P lateau, wo rk, D wo rk, Shoulder
line of valley, D igital E levation M odel (D EM )
摘要黄土丘陵沟壑区沟谷网络自动制图技术的核心是沟谷网络的自动提取技术。本文基于沟
谷网络和汇流网络的差别, 提出了形态学方法和水文学方法相结合自动提取沟谷网络的新技术,
设计了完整的基于栅格数字高程数据的提取算法, 并给出了典型黄土沟壑丘陵区山西离石王家沟
小流域的运行结果。提取得到的沟谷网络与实际情况相符。
关键词黄土沟壑丘陵区沟谷网络汇流网络沟沿线数字高程模型
分类号 P283. 7