Presented By Harry Mills / PRESENTATIONPRO 生物圈是最大的生态系统 Presented By Harry Mills / PRESENTATIONPRO 一、多种多样的生态系统 森林生态系统 涵养水源，保持水土 “绿色水库 ” Presented By Harry Mills / PRESENTATIONPRO 草原生态系统 缺乏高大的植物，动植物种类 比森林生态系统少。 Presented By Harry Mills / PRESENTATIONPRO 海洋生态系统 Presented By Harry Mills / PRESENTATIONPRO 淡水生态系统 Presented By Harry Mills / PRESENTATIONPRO 湿地生态系统 湿地具有净化水源、蓄洪 抗旱的作用。 Presented By Harry Mills / PRESENTATIONPRO 农田生态系统 Presented By Harry Mills / PRESENTATIONPRO 城市生态系统 Presented By Harry Mil
