degraded ecosystem

常見例句

Good intentions are rewarded with plenty of Nile perch (for now) but a degraded ecosystem in the long run.
于是回報當初人們的美好愿景的是，大量的尼羅河鱸魚和指日可待的環(huán)境退化。
Layer structure, synusia structure and height- classes structure and dynamics of degraded ecosystem were studied.
對退化生態(tài)系統(tǒng)的層次結構、層片結構、高度級結構及其動態(tài)等進行了研究。
In this paper, the general situation of mountain ecosystem was briefly introduced and the effects of keystone populations on the degraded ecosystem were discussed.
簡要介紹了岷江上游山地生態(tài)系統(tǒng)的概況，討論了關鍵種群在退化生態(tài)系統(tǒng)研究中的作用和意義。