Over one lakh trees were cut during 2006-2014 to make way for Delhi Metro and PWD projects, bringing down the city's green cover to 10% from the minimum desired level of 33%, a Delhi high court app
Links:
[1] http://admin.indiaenvironmentportal.org.in/news/1-lakh-trees-chopped-over-8-years-metro-pwd-projects-city
[2] http://admin.indiaenvironmentportal.org.in/category/author/abhinav-garg
[3] http://admin.indiaenvironmentportal.org.in/category/newspaper/times-india-new-delhi
[4] http://admin.indiaenvironmentportal.org.in/category/thesaurus/delhi
[5] http://admin.indiaenvironmentportal.org.in/category/thesaurus/trees
[6] http://admin.indiaenvironmentportal.org.in/category/thesaurus/deforestation
[7] http://admin.indiaenvironmentportal.org.in/category/thesaurus/delhi-metro-rail-corporation-dmrc
[8] http://admin.indiaenvironmentportal.org.in/category/thesaurus/air-pollution
[9] http://admin.indiaenvironmentportal.org.in/category/thesaurus/vehicular-pollution
[10] http://admin.indiaenvironmentportal.org.in/category/thesaurus/urbanisation
[11] http://admin.indiaenvironmentportal.org.in/category/thesaurus/forests