Regeneration status of a forest indicates its health and a healthy forest ensures good future generations. Sal species which regulates its environment and forms pure stands in Doon Valley.
Links:
[1] http://admin.indiaenvironmentportal.org.in/feature-article/regeneration-status-sal-forests-doon-valley
[2] http://admin.indiaenvironmentportal.org.in/category/author/p-s-chauhan
[3] http://admin.indiaenvironmentportal.org.in/category/author/j-d-s-negi
[4] http://admin.indiaenvironmentportal.org.in/category/author/lokender-singh-et-al
[5] http://admin.indiaenvironmentportal.org.in/category/journal/annals-forestry
[6] http://admin.indiaenvironmentportal.org.in/category/thesaurus/forests
[7] http://admin.indiaenvironmentportal.org.in/category/thesaurus/soil-capability
[8] http://admin.indiaenvironmentportal.org.in/category/thesaurus/uttaranchal-uttarakhand