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龙脑香类森林是印——马热带雨林中的主要森林类型.世界三大片热带雨林分布于印——马、热带美洲和热带非洲.这些热带雨林的特征是植被层次多,树种种类众多.所谓龙脑香类森林并非指龙脑香科植物的纯林,而是指由许多科的树种组成,但以龙脑香科植物的组分占优势的森林.据Symington(1943)和Meijer和Wood(1964)的研究,早在1500—1700万年前的第三纪,龙脑香类森林已经完全发育了,很可能在8000万年——1.4亿年前就已经有龙脑香类植物存在了.为了说明龙脑香类森林的现在分布情况,关于现在被海洋分隔的大陆曾经一度是由陆桥连在一起的推断是有道
The Darong fragrant forest is the main type of forest in the Indo-Mara forest, with the world’s three major tropical rain forests distributed in Indo-Mara, the tropical Americas and tropical Africa, characterized by many vegetation levels and numerous tree species. The so-called Darryl fragrant forest is not pure forest Linnaeus fragrant plants, but by many families of trees, but dominated by dicotyledon forest plant components according to Symington (1943) and Meijer and Wood (1964) study, as early as 1500-1700 million years ago in the Tertiary, Darong fragrant forest has been fully developed, it is likely that 80 million years - 1.4 billion years ago there have been Darong fragrant plants To illustrate the current distribution of the Darong fragrant forests, it is reasonable to assume that the continents now separated by oceans were once linked by land bridges