While this will be the first tree census conducted by the Delhi government, government officials said, that the NDMC had conducted a similar census within its jurisdiction earlier.
Links:
[1] http://admin.indiaenvironmentportal.org.in/news/third-party-will-conduct-delhi-tree-census-minister-imran-hussein
[2] http://admin.indiaenvironmentportal.org.in/category/newspaper/indian-express-new-delhi
[3] http://admin.indiaenvironmentportal.org.in/category/thesaurus/delhi
[4] http://admin.indiaenvironmentportal.org.in/category/thesaurus/trees
[5] http://admin.indiaenvironmentportal.org.in/category/thesaurus/municipal-corporation
[6] http://admin.indiaenvironmentportal.org.in/category/thesaurus/delhi-development-authority-dda
[7] http://admin.indiaenvironmentportal.org.in/category/thesaurus/air-pollution
[8] http://admin.indiaenvironmentportal.org.in/category/thesaurus/afforestation
[9] http://admin.indiaenvironmentportal.org.in/category/thesaurus/forests