Paper Info
Title
Modeling Landscape Spatial Frequency Characteristics -- Case Study In Loess Hilly Area Of China
Abstract
The change of terrain parameters with resolution of DEM (Digital Elevation Model) is one of research hotspots in the research fields of hydrology and soil erosion. However there is a lack of scientific explanation on mechanism of this phenomenon. In this paper, a typical Loess Hilly area in the Loess Plateau was taken as study area. Geostatistics and Digital Terrain Analysis (DTA) were used in order to model the semivariogram of elevation surface. Components with specified spatial frequencies of varied resolutions (10m,25m,50m,100m) were modeled using semivariogram and mapped by kriging to help identify the corresponding landscape components. By doing this, the change of a certain landscape component with resolution of DEM was investigated and the reason for terrain parameters changing with DEM resolution was given. The results showed that there were more higher frequency terrain information lost than the lower frequency terrain information with resolution of DEM reduction, and the loss of higher frequency information was the reason for terrain parameters changing with DEM.
Year
DOI
Venue
2016
10.1109/IGARSS.2016.7730576
2016 IEEE INTERNATIONAL GEOSCIENCE AND REMOTE SENSING SYMPOSIUM (IGARSS)
Keywords
Field
DocType
DEM, spatial frequencies, semi-variogram, kriging, scaling effect of terrain parameters
Kriging,Plateau,Computer science,Terrain,Remote sensing,Loess,Digital elevation model,Elevation,Spatial frequency,Geostatistics
Conference
ISSN
Citations 
PageRank 
2153-6996
0
0.34
References 
Authors
3
3
Name
Order
Citations
PageRank
Xiang Tu100.34
Chunmei Wang201.01
Qinke Yang3176.46