浙南沿海沉積物中重金屬污染及其潛在生態(tài)危害評價
發(fā)布時間:2018-07-03 13:04
本文選題:浙南沿海 + 重金屬 ; 參考:《浙江農(nóng)業(yè)學報》2016年01期
【摘要】:測定了浙南沿海蒼南霞關(guān)(CN)、洞頭霓嶼(DT)和樂清清江口(QJK)海域表層沉積物中重金屬的含量,并采用Hakanson潛在生態(tài)危害指數(shù)法對其生態(tài)危害進行評價。結(jié)果表明,這3個地區(qū)各個站點的重金屬污染狀況呈現(xiàn)一定的相似性,Cu,Pb,Zn和Cr均屬于中等污染程度;3個地區(qū)平均綜合污染指數(shù)分別為6.44,7.23,6.45,屬于低污染程度。3個地區(qū)的生態(tài)風險指數(shù)表現(xiàn)為DT(45.29)CN(42.26)QJK(42.16),指數(shù)數(shù)值都小于150,屬于低生態(tài)危害程度,在空間分布上,蒼南霞關(guān)和樂清清江口呈現(xiàn)近岸高、遠岸低,灣內(nèi)高、灣外低的變化趨勢。
[Abstract]:The contents of heavy metals in the surface sediments of Cangnan Xiaguan (CN), Dongtou Niyu (DT) and Yueqing River Estuary (QJK) were determined, and the ecological hazards were evaluated by Hakanson potential ecological hazard index method. The results show that The heavy metal pollution status of each station in these three areas is similar to that of CuCuPbPbPbPbPbPbPbPbPbCU Zn and Cr, and the average comprehensive pollution index of the three regions is 6.44% 7.236.45, which belongs to the low pollution degree. The ecological risk index of the three regions is indicated by the ecological risk index of the three regions. The index values of DT (45.29) CN (42.26) QJK (42.16) are all less than 150, which belong to low ecological hazard degree. In terms of spatial distribution, Cangnan Xiaguan and Yueqing Estuary showed a trend of high near shore, low far shore, high inside bay and low outside bay.
【作者單位】: 浙江省海洋水產(chǎn)養(yǎng)殖研究所/浙江省近岸水域生物資源開發(fā)與保護重點實驗室;
【基金】:浙江省科技計劃項目(2013C32059) 溫州市招標項目(DHCG20140903) 臨港工業(yè)開發(fā)背景下樂清灣海水增養(yǎng)殖區(qū)的環(huán)境監(jiān)測和生態(tài)養(yǎng)護(浙海漁計[2012]100號)
【分類號】:X55;X826
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本文編號:2093744
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