Department of Geography, Faculty of Natural Sciences, Jamia Millia Islamia, New Delhi, India.
Key Laboratory of Virtual Geographic Environment (Nanjing Normal University), Ministry of Education, Nanjing 210023, China; Jiangsu Center for Collaborative Innovation in Geographic Information Resource Development and Application, Nanjing, Jiangsu 210023, China; State Key Laboratory Cultivation Base of Geographical Environment Evolution (Jiangsu Province), Nanjing 210023, China.
Sci Total Environ. 2018 Jul 1;628-629:1557-1566. doi: 10.1016/j.scitotenv.2018.02.170. Epub 2018 Feb 22.
This research paper analyzed urban spatial pattern and trend of urban growth in Kolkata urban agglomeration, India using urban sprawl matrix during 1990-2000 & 2000-2015. Seven urban classes viz. urban primary core, urban secondary core, sub urban fringe, scatter settlement, urban open space, non-urban area and water body were chosen for analyzing the magnitude and direction of urban expansion. Landsat TM and Landsat 8 OLI satellite data for 1990, 2000 and 2015 were used for assessing land use land cover change, urban land transformation, urban spatial pattern and trend in urban growth. The study revealed that the built up area has increased drastically. This increase in built up area is attributed to decrease in prime agricultural land and open space. The land use/land cover change matrix showed that built up area has expanded by 16.6% during 1990-2000 and 24.5% during 2000-2015. The urban expansion is a result of large share of land transformation from agricultural land at the rate of 153.1% during 1990-2000 and 66.9% during 2000-2015. Analysis of trend of urban growth in 38 municipalities and 3 municipal corporations of Kolkata urban agglomeration revealed that municipalities located along the east bank of river Hooghly and surrounded by Kolkata Municipal Corporation have experienced a very fast urban growth. Urban primary and secondary cores have increased in newly developed municipalities. Sub urban fringe has increased in the municipalities located away from river Hooghly while open space has decreased in all the old municipalities. Pattern of land transformation and trend of urban growth of Kolkata urban agglomeration for the last 25years may help in guiding future planning and policy-making for the urban agglomeration. Integrated approach of remote sensing, GIS and urban sprawl matrix has proved instrumental in analyzing urban expansion and identifying priority areas for effectives planning and management.
本研究论文分析了印度加尔各答城市群在 1990-2000 年和 2000-2015 年期间使用城市扩张矩阵的城市空间格局和城市增长趋势。选择了七个城市类别，即城市主要核心区、城市次要核心区、城市边缘带、分散定居点、城市开放空间、非城市区域和水体，用于分析城市扩张的规模和方向。使用 1990 年、2000 年和 2015 年的 Landsat TM 和 Landsat 8 OLI 卫星数据评估土地利用/土地覆盖变化、城市土地转化、城市空间格局和城市增长趋势。研究表明，建成区面积大幅增加。这种建成区面积的增加归因于主要农业用地和开放空间的减少。土地利用/土地覆盖变化矩阵显示，1990-2000 年期间建成区面积增加了 16.6%，2000-2015 年期间增加了 24.5%。城市扩张是由于农业用地大量转化为土地的结果，1990-2000 年期间土地转化率为 153.1%，2000-2015 年期间土地转化率为 66.9%。对加尔各答城市群 38 个自治市和 3 个市政府的城市增长趋势进行分析表明，位于胡格利河东侧并被加尔各答市政府包围的自治市经历了非常快速的城市增长。新开发的自治市中，城市主要核心区和次要核心区有所增加。远离胡格利河的自治市中，城市边缘带增加，而所有旧自治市的开放空间减少。过去 25 年加尔各答城市群的土地转化模式和城市增长趋势可以帮助指导该城市群的未来规划和决策。遥感、GIS 和城市扩张矩阵的综合方法已被证明在分析城市扩张和确定有效规划和管理的优先区域方面非常有效。
