The formation-types are first rearranged into four major biochoresforest, savanna, grassland, and desert . 首先把群系型重新排列成四個(gè)主要的生態(tài)區(qū)森林、稀樹(shù)草原、草地和荒漠。
Some systems for the classification of climates seek to define climatic units that will correspond to major formation-types . 一些對(duì)氣候的分類系統(tǒng)傾向于以相應(yīng)的主要群系型來(lái)范定氣候的單位。