一个外来入侵物种,到达一个新的适宜环境后( ) A.将使原来生态系

一个外来入侵物种,到达一个新的适宜环境后(  )

A.将使原来生态系统的营养结构逐渐变得更加多样化

B.将使原来生态系统中能量流动的传递效率逐渐提高

C.将使原来的生态系统的恢复力稳定性逐渐提高

D.将对原来生态系统中群落的演替产生严重影响

 

答案

D

一个外来入侵物种,到达一个新的适宜环境后,往往呈“J”型增长,会导致原有物种的生存受到威胁,原来生态系统的营养结构可能逐渐变得简单;但不能改变生态系统中能量流动的传递效率;生态系统的恢复力稳定性的变化与原生态系统受到破坏的程度,及所处的环境条件有关;一个外来入侵物种,到达一个新的适宜环境后的“J”型增长将对原来生态系统中群落的演替产生严重影响。

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