|Table of Contents|

Determination of Accumulation Area Based on the Method of Applying Mean of Change-Point Analysis(PDF)

《南京师大学报（自然科学版）》[ISSN:1001-4616/CN:32-1239/N]

Issue:
2014年01期
Page:
147-
Research Field:
地理学
Publishing date:

Info

Title:
Determination of Accumulation Area Based on the Method of Applying Mean of Change-Point Analysis
Author(s):
Chang Zhiyang1; Wang Jian1; 2; Bai Shibiao1; 2; Zhang Zhigang1
(1.School of Geography Science,Nanjing Normal University,Nanjing 210023,China) (2.MOE Key Laboratory of Virtual Geographic Environment,Nanjing Normal University,Nanjing 210023,China)
Keywords:
Zagunao River; channel density; threshold of accumulation area; mean of change-point method
PACS:
P542
DOI:
-
Abstract:
To gain the threshold of catchment area is the critical step of extracting drainage network from DEM.But this index determination were still subjective and random with no theoretical support in most studies.Taking Zagunao Drainage Basin as an example,we calculated the drainage densities of different accumulation areas with SRTM-DEM data by using the hydrology model in Arcgis followed by gaining the optimum accumulation area with the method of mean of change-point.The result indicates that the drainage density correlated with accumulation area negatively and the 8.1 km2 optimum accumulation shows more authenticity compared with the geology map of 1:500 000.It means that this kind of way can be applied to determine the accumulation area.

References:

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Last Update: 2014-03-30