The Impact of Urbanization to Forest Degradation in Metropolitan Semarang: A Preliminary Study

2nd Geoplanning - International Conference on Geomatics and Planning

Sejati, A.W.^1,2,3 ; Buchori, I.^1,2 ; Rudiarto, I.^1,2

Department of Urban and Regional Planning, Universitas Diponegoro, Indonesia^1

Center of Geomatic's Application for Sustainable Development, Universitas Diponegoro, Indonesia^2

Doctoral Program in Architecture and Urbanism, Universitas Diponegoro, Indonesia^3

关键词: Forest conversion;    Forest degradation;    Industrial buildings;    Metropolitan area;    Metropolitan Semarang;    NDBI-NDVI;    Remote sensing data;    Urbanization;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/123/1/012011/pdf
DOI  :  10.1088/1755-1315/123/1/012011

来源: IOP

【 摘 要 】

This paper aims to examine the relationship of urbanization and the consequences of environmental impacts, especially the availability of forests. The analysis used remote sensing data ie Landsat 7 ETM (1990), Landsat 7 ETM (2000), and Landsat 8 OLI (2015). Analysis of forest availability used green vegetation cover parameters with NDVI techniques, while urbanization was measured by looking at the built-up area growth with NDBI techniques. The detection result in 1990 area of urban area was 74.85 km2, in 2000 was 130.83 km2, and in 2015 was 292.74 km2. Given the overall size of the metropolitan area of Semarang (932.14 km2), the proportion of the built up area in 2015 was 31% with an average of 6% per year change in 1990-2000 and 8.2% per year in 2000-2015. Urbanization in this region is characterized by forest conversion into residential and industrial buildings. With increasing area and built-up density, NDBI is found to be proportionately increasing, while NDVI decrease is significant. The results show that NDBI-NDVI correlation is negative (-0.99). It is very important for policy makers to formulate land use control policies in Metropolitan Semarang particularly in responding to the issue of forest conversion.