Vegetation change and fragmentation in the mega city of Delhi: Mapping 25 years of change |
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| Institution: | 1. Ashoka Trust for Research in Ecology and the Environment (ATREE), Royal Enclave, Jakkur Post, Srirampura, Bangalore 560064, India;2. Manipal Academy of Higher Education, Manipal 576104, India;3. School of Development, Azim Premji University, PES Institute of Technology Campus, Pixel Park, B Block, Electronics City, Hosur Road, Bangalore 560100, India;1. Department of Civil Engineering, Indian Institute of Technology Bombay, Mumbai, India;2. Department of Civil Engineering, Indian Institute of Technology Roorkee, Roorkee, India;1. Department of Civil, Environmental and Mechanical Engineering, University of Trento, via Mesiano, 77, 38123, Trento, Italy;2. School of Development, Azim Premji University, PES Institute of Technology Campus, Pixel Park, B Block, Electronics City, Hosur Road, Bangalore 560100, India;1. United Nations University Institute for the Advanced Study of Sustainability, 5-53-70 Jingumae,?Shibuya-ku, Tokyo, 150-8925, Japan;2. Tokyo, Japan;1. Department of Natural Resources, TERI University, New Delhi 110070, India;2. National Institute of Urban Affairs, New Delhi 110003, India;1. Research Scholar, SAID, SRM Institute of Science and Technology, Kattankulathur, Chennai 603203, India;2. SAID, SRM institute of Science and Technology, Kattankulathur, Chennai 603203, India;3. Marian College of Architecture & Planning, Kazhakuttom, Thiruvananthapuram, Kerala 695582, India |
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| Abstract: | Delhi, the worlds' second most populous city, has experienced rapid, planned and unplanned expansion at the cost of its green cover in recent decades. In this study, we use satellite images from 1986, 1999 and 2010 to map changes in urban and green cover, assess the fragmentation of green spaces, and identify the drivers of change. We find that urban patterns of development have shaped the distribution and fragmentation of green spaces, with the city center containing more green spaces with less fragmentation compared to intermediate areas and the peri-urban periphery. Yet, the city core has also experienced the greatest degree of vegetation clearing and fragmentation over time due to infrastructural expansion, while the peri-urban periphery has shown an increase in vegetation and a decrease in fragmentation due to recent compensatory plantation in these peripheral areas. Forests, archaeological sites, and military and academic campuses have played a major role in protecting green cover and limiting fragmentation in the core and intermediate areas of the city. This research helps in advancing our understanding of the pattern–process relationship between urbanization and land cover change/fragmentation in India's largest city. |
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| Keywords: | Land cover change Vegetation Fragmentation Urban institutions Urban sprawl South Asia |
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