DOI: 10.1016/j.jag.2012.11.005
Scopus记录号: 2-s2.0-84880304629
论文题名: Monitoring urbanization dynamics in india using DMSP/OLS night time lights and SPOT-VGT data
作者: Pandey B ; , Joshi P ; K ; , Seto K ; C
刊名: International Journal of Applied Earth Observation and Geoinformation
ISSN: 15698432
出版年: 2013
卷: 23, 期: 1 起始页码: 49
结束页码: 61
语种: 英语
英文关键词: Intercalibration
; Landscape metrics
; Night time lights
; Support vector machine
; Urban growth
Scopus关键词: data set
; satellite data
; satellite imagery
; SPOT
; urban growth
; urban planning
; urbanization
; India
; Kerala
; Punjab [India]
; Tamil Nadu
英文摘要: India is a rapidly urbanizing country and has experienced profound changes in the spatial structure of urban areas. This study endeavours to illuminate the process of urbanization in India using Defence Meteorological Satellites Program - Operational Linescan System (DMSP-OLS) night time lights (NTLs) and SPOT vegetation (VGT) dataset for the period 1998-2008. Satellite imagery of NTLs provides an efficient way to map urban areas at globaland national scales. DMSP/OLS dataset however lacks continuity and comparability; hence the dataset was first intercalibrated using second order polynomial regression equation. The intercalibrated dataset along with SPOT-VGTdataset for the year 1998 and 2008 were subjected to a support vector machine (SVM) method to extract urban areas. SVM is semi-automated technique that overcomes the problems associated with the thresholding methods for NTLsdata and hence enables for regional and national scale assessment of urbanization. The extracted urban areas were validated with Google Earth images and global urban extent maps. Spatial metrics were calculated and analyzed state-wise to understand the dynamism of urban areas in India. Significant changes in urban proportion were observed in Tamil Nadu, Punjab and Kerala while other states also showed a high degree of changes in area wise urbanproportion. © 2012 Elsevier B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/79809
Appears in Collections: 气候变化事实与影响
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作者单位: Department of Natural Resources, TERI University, New Delhi, India; Yale School of Forestry and Environmental Studies, Yale University, New Haven, CT, United States
Recommended Citation:
Pandey B,, Joshi P,K,et al. Monitoring urbanization dynamics in india using DMSP/OLS night time lights and SPOT-VGT data[J]. International Journal of Applied Earth Observation and Geoinformation,2013-01-01,23(1)