@tss The bit was picked up from the news article that i shared,acc to that 'critical tiger habitat' term was pickup from that article. This concept came because as per a study the sunderbans would be wiped of their natural habitat by 2070.Even factually core tiger reserved area of sunderbans is 1700sq.km and Nagarjunasagar's is 1200 sq.km.
@beginn371316 except ntca data,all other sources have a consensus on 1200sqkm core area figure(wiki,telagana website,saisailam tourism website,etc).Secondly the Q doesnt ask in India so if we include Bangla it 4000sqkm.For ur reference pls go through these recent news articles.
1.https://www.google.com/amp/s/www.firstpost.com/long-reads/tiger-habitats-in-sundarbans-are-imperiled-by-climate-change-govt-intervention-is-urgently-required-6342851.html/amp
2.https://www.google.com/amp/s/www.indiatoday.in/amp/science/story/bengal-tiger-could-go-extinct-as-sundarban-habitats-entirely-vanish-by-2070-because-of-climate-change-1455129-2019-02-13
@AB007007 Refer NTCA official website the core area of nstr is 2500 sq km
https://www.google.com/amp/s/www.indiatoday.in/amp/science/story/bengal-tiger-could-go-extinct-as-sundarban-habitats-entirely-vanish-by-2070-because-of-climate-change-1455129-2019-02-13
