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eco-catastrophe
eco-catastrophe n. 
/ˌɛkəʊkəˈtastrəfi/, /ˌikoʊkəˈtæstrəfi/
Brit. /ˌiːkəʊkəˈtastrəfi/
, /ˌiːkəʊkəˈtastrəfi//ˌɛkəʊkəˈtastrəfi/U.S. /ˌɛkoʊkəˈtæstrəfi/
, /ˌɛkoʊkəˈtæstrəfi//ˌikoʊkəˈtæstrəfi/ΘΚΠ
the world > action or operation > adversity > calamity or misfortune > [noun] > misfortune or ill-luck > instance of misfortune or ill-luck > dreadful or severe > to the environment
apocalypse1894
eco-catastrophe1969
ecocide1969
ecodoom1972
1969Eco-catastrophe [see sense 2a(a)].
1973 Science 12 Oct. 173/2 An ecocatastrophe of serious magnitude to the seaward fringe of the Everglades National Park and adjacent areas appears to be in progress.
1997 Biochemist Dec. 7/1 The warnings of at least one of the scientists..of the hazards of escape, pollution and eco-catastrophe, go unheeded.
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as lemmas