常見例句雙語例句In order to maintain river ecosystem health and biodiversity, it is urgent to study the alterations of aquatic habitat environment.爲了維護生態(tài)系統(tǒng)的健康和水生生物的多樣性，急需研究這些要素的變化槼律。Index of biological integrity(IBI) has been proved to be one of the useful measures in health assessment of aquatic ecosystem, and is widely applied today.生物完整性指數(shù)是目前水生態(tài)系統(tǒng)健康評價中應(yīng)用最廣泛的一個生態(tài)指標。 返回 aquatic ecosystem health