地理科学 ›› 2017, Vol. 37 ›› Issue (11): 1764-1770.doi: 10.13249/j.cnki.sgs.2017.11.019
收稿日期:
2016-09-25
修回日期:
2016-12-13
出版日期:
2017-11-20
发布日期:
2017-11-20
作者简介:
作者简介:颜阁(1990-),男,江苏南京人,硕士,主要从事GIS、地貌与地质灾害研究。E-mail:
基金资助:
Ge Yan(), Shouyun Liang(
), Hongliang Zhao
Received:
2016-09-25
Revised:
2016-12-13
Online:
2017-11-20
Published:
2017-11-20
Supported by:
摘要:
斜坡单元已广泛应用于滑坡易发性制图和地质灾害评价。然而在山间盆地或大型宽谷处,常规方法划分出的斜坡单元与地貌背景难以匹配。依据高程及其衍生变量的基本形态系统和曲率的流域分割原理,基于ArcGIS技术,通过叠加曲率和反转曲率的流域边界,改进了斜坡单元划分方法。结果表明:与常规方法相比,改进方法不仅能够使用山脊线和山谷线以划分斜坡单元,还能利用台地边界和宽谷边界以分割水平地表与倾斜地表;划分出的单元大小相对均匀,单元形状总体介于圆形和正三角形之间。对于水平成分较多的地区,如黄土塬区和水库库区,该方法与传统方法相比,具有较好的应用前景。
中图分类号:
颜阁, 梁收运, 赵红亮. 基于GIS的斜坡单元划分方法改进与实现[J]. 地理科学, 2017, 37(11): 1764-1770.
Ge Yan, Shouyun Liang, Hongliang Zhao. An Approach to Improving Slope Unit Division Using GIS Technique[J]. SCIENTIA GEOGRAPHICA SINICA, 2017, 37(11): 1764-1770.
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