natural community structure

• 群落结构

natural community structure的用法和样例：

例句

1. The diversity and community structure of AOB in red soil sample was mainly studied in this paper.
   本文主要对红壤荒草地土样中的氨氧化细菌多样性和群落结构进行分析。
2. The community structure was basically reasonable and Picea classifolia population was a steady one.
   群落结构基本合理，青海云杉呈稳定型种群。