degraded ecosystem

常见例句

Good intentions are rewarded with plenty of Nile perch (for now) but a degraded ecosystem in the long run.
于是回报当初人们的美好愿景的是，大量的尼罗河鲈鱼和指日可待的环境退化。
Layer structure, synusia structure and height- classes structure and dynamics of degraded ecosystem were studied.
对退化生态系统的层次结构、层片结构、高度级结构及其动态等进行了研究。
In this paper, the general situation of mountain ecosystem was briefly introduced and the effects of keystone populations on the degraded ecosystem were discussed.
简要介绍了岷江上游山地生态系统的概况，讨论了关键种群在退化生态系统研究中的作用和意义。