Between 1999 and 2012, there has been an alarming depletion of Natural Conservation Zones — forests, water bodies and wasteland — in the National Capital Region.
Links:
[1] http://admin.indiaenvironmentportal.org.in/news/gb-nagar-sees-maximum-erosion-ncr-green-zones
[2] http://admin.indiaenvironmentportal.org.in/category/newspaper/times-india-noida
[3] http://admin.indiaenvironmentportal.org.in/category/thesaurus/gautam-budha-nagar
[4] http://admin.indiaenvironmentportal.org.in/category/thesaurus/delhi
[5] http://admin.indiaenvironmentportal.org.in/category/thesaurus/soil-erosion
[6] http://admin.indiaenvironmentportal.org.in/category/thesaurus/forests
[7] http://admin.indiaenvironmentportal.org.in/category/thesaurus/water-resources
[8] http://admin.indiaenvironmentportal.org.in/category/thesaurus/mining
[9] http://admin.indiaenvironmentportal.org.in/category/thesaurus/gurgaon-d
[10] http://admin.indiaenvironmentportal.org.in/category/thesaurus/environment