The community structure of macro - invertebrates became simple with the sediment pollution getting heavier 隨著底質(zhì)污染的加重,群落結(jié)構(gòu)趨于簡(jiǎn)化。
Similar sediment pollution scenarios are occurring in the headwaters of the salween and yangtze rivers 在薩爾溫江和長(zhǎng)江上游也存在類似的泥沙污染狀況。
Few groups , including environmentalists , nongovernmental organizations , international donors and government agencies , clearly see the magnitude of the problems associated with sediment pollution from mountain roads 包括環(huán)保主義者、非政府組織、捐助國(guó)和政府機(jī)構(gòu)在內(nèi)的少數(shù)團(tuán)體清楚地看出了山路建設(shè)帶來(lái)的泥沙污染問(wèn)題的程度。
The current situation of sediment pollution in li canal was introduced in this article . with individual and nemerow index evaluation methods , the sediment pollution by heavy metals was analyzed systematically , and pollution control measures were put forward 介紹了淮安市里運(yùn)河底質(zhì)污染的現(xiàn)狀,運(yùn)用單項(xiàng)和內(nèi)梅羅指數(shù)評(píng)價(jià)方法系統(tǒng)地對(duì)里運(yùn)河底質(zhì)中重金屬污染狀況進(jìn)行了分析研究,并提出了污染防治措施。
The main contents related to the scheme were introduced as follows : the characteristics and status of sediment pollution , the determination of the range , the depth , and the scale of sediment dredging projects , the treatment of dredged sediment , the disposal of the remaining water , etc 詳細(xì)闡述了該方案涉及的主要內(nèi)容:底泥污染特性及污染狀況分析,疏浚平面范圍、疏浚深度及疏浚工程規(guī)模的確定,疏浚底泥處置及余水處理等。