Environmental Impacts of Urban Sprawl in Surat, Gujarat: An Examination Using Landsat Data

被引：7

作者：

Mukherjee, Falguni ^{[1
]}

机构：

[1] Sam Houston State Univ, Dept Environm & Geosci, Huntsville, TX 77340 USA

来源：

JOURNAL OF THE INDIAN SOCIETY OF REMOTE SENSING | 2022年 / 50卷 / 06期

关键词：

Urban sprawl; LST; NDVI; NDBI; NDWI; Shannon's entropy; DIFFERENCE VEGETATION INDEX; USE/LAND-COVER CHANGE; SURFACE-TEMPERATURE; HEAT-ISLAND; RAPID URBANIZATION; WATER INDEX; CITY; GIS; GOVERNANCE; INDIA;

D O I：

10.1007/s12524-022-01509-8

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

This study examines the environmental impacts of urban sprawl in Surat inner city in India. Urban sprawl is examined by studying land-use land-cover change from 1998 to 2016. Changes in spatial characteristics of urban land cover are further verified using Shannon's entropy. The impact of urban sprawl is examined by computing normalized difference vegetation index (NDVI), normalized difference water index (NDWI) and normalized difference built-up index (NDBI) values. Land surface temperature (LST) is also calculated using thermal band of multi-temporal Landsat data. Regression analysis is used to calculate the correlation between LST and NDVI, NDWI and NDBI. The study showed a negative correlation between NDVI, NDWI and LST and a positive correlation between NDBI and LST. Urban areas in Surat have grown an approximately 60.41 sq.km, a 102% increase while surface temperature in Surat inner city has risen by 5.1 degrees C during the study period. The study also showed that temperature increase was particularly pronounced throughout areas classified as urban and bare soil and showed an increasing trend in parts of the city with dense urban areas.

引用

页码：1003 / 1020

页数：18

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