Ƙididdiga da abubuwan da ke haifar da sare itatuwa sun bambanta daga yanki zuwa yanki a duniya. A cikin 2009, 2/3 na gandun daji na duniya suna cikin ƙasashe 10 kawai: 1) Rasha, 2) Brazil, 3) Kanada, 4) Amurka, 5) China, 6) Australia, 7) Congo, 8) Indonesia, 9 ) Indiya da 10) Peru . An kiyasta sare itatuwa na shekara -shekara na duniya kamar hekta miliyan 13.7 a shekara, daidai da yankin Girka. Rabin rabin wannan yanki ne ake biyan diyya ta sabbin gandun daji ko haɓaka gandun daji. Baya ga sare bishiyoyin da dan adam ke jawowa, gandun dajin da ke tsiro kuma ya shafi canjin yanayi, da kara hadarin hadari, da cututtuka. Yarjejeniyar Kyoto ta da yarjejeniya don hana sare itatuwa amma ba ayyukan aiwatar da shi ba.