Change of Pattern and Expansion in the Developed Area of Mid-upper Course of Keelung River Catchment
Date Issued
2007
Date
2007
Author(s)
Wang, Tsui-Hua
DOI
zh-TW
Abstract
This study focused on the spatial distribution change of built area in the Keelung River Catchment. The aerial photographs were used to interpret the location and distribution of built area from 1983 to 2004. Urban sprawl was clearly identified in time and space.
The urbanization rate during 1983-2004 was calculated. Three distinct patterns of urban development were observed. First, in the period of 1983-1988 the new built area was mainly occurred in Sijhih City and Keelung City. The increasing rate of built area achieved to 0.88 km2/yr. It is the highest rate of three periods. In the second period (1988-1995), the increasing rate is 0.33 km2/yr. The built area spread outward along the traffic line, which was from the former central place to the outer region. In the last period (1995-2004), the built area sprawled to the mountainous area. Valleys, terraces, alluvium fans were prevailing new immigrations. But in the end of this period the urban sprawling slowed down because of the legislative restriction of building on steep slope.
By using logistic regression analysis, the drivng forces for such changing of settlement are DEM, slope, and the distance to road. Land use change is strongly influenced by topography, 90% of developed area are distruibuted at the slope angle which are less than 30%. This study presents a good application of GIS in detecting land use change. The result is an important data base in monitoring the environment disaster.
Subjects
土地利用變遷
基隆河流域
汐止
坡地災害
航照判讀
LUCC
Keelung River
Sijhih City
Slope Hazard
Type
thesis
File(s)![Thumbnail Image]()
Loading...
Name
ntu-96-R93228017-1.pdf
Size
23.53 KB
Format
Adobe PDF
Checksum
(MD5):bca1d5efe310b8d49a6d9f9f8ec524ca