species compositions

• 种类组成

species compositions的用法和样例：

例句

1. The species composition and characteristics of mangrove flora in the world were reviewed and discussed.
   探讨了世界红树林植物区系的种类组成及其特点。
2. Temperate forests consist mainly of broad-leaved, deciduous species and the complex layered structure of the vegetation leads to high primary production.
   温带森林主要由阔叶落叶种类组成，植被复杂的层次结构导致很高的初级生产力。