读雨林生态系统的养分循环示意图,回答下列问题:(12分) (1)写出图中字母所表示的地理名称: A B (2)雨林生态系统中,由于有机质分解和 再循环旺盛, 自身很少积累和补充养分。 (3)雨林生态系统中,雨林生长所需要的养分几乎全部储存在地上的 内,雨林植被一旦被毁,养分遭受强烈 而很快丧失,使地表植物很难恢复,整个生态系统就会陷于崩溃。
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