Avocados, which are currently grown mostly only in limited areas of Japan, including the Nansei island chain in Kagoshima and Okinawa prefectures, are expected to replace mikan as a new crop suitable for cultivation. The NARO officials predicted the areas suited to avocado culture will expand 2.5- to 3.7-fold from now by mid-century, and 2.4- to 7.7-fold from now by century-end, in the three scenarios considered. They said that, in the "very high" greenhouse gas emissions scenario, some 95,000 square kilometers will fall in a temperature zone suited to avocado culture by the end of the century, and that includes larger parts of the Kanto plains and of Izu and Boso peninsulas.