本文選題：營養(yǎng)鹽　切入點：顆粒態(tài)磷　出處：《海洋學(xué)報》2017年06期

【摘要】：2012年2月至2014年3月在黃河下游采集水樣,分析黃河下游營養(yǎng)鹽濃度與通量的月際、季節(jié)性以及在調(diào)水調(diào)沙期和暴雨期的變化情況,并估算了調(diào)水調(diào)沙期和洪水期輸水量和營養(yǎng)鹽入海通量對黃河年入海通量的貢獻(xiàn)。結(jié)果表明NO-3是TDN的主要存在形式,各形態(tài)氮營養(yǎng)鹽枯水期高于豐水期;DIP是TDP的主要存在形式,PIP是TPP的主要存在形態(tài),顆粒態(tài)磷和DSi豐水期高于枯水期。黃河水體中具有高DIN/DIP和DSi/DIP,低DSi/DIN,嚴(yán)重偏離Redfield比值。營養(yǎng)鹽輸送通量具有很強的月際變化,在徑流量及輸沙量最大月份也存在營養(yǎng)鹽入海通量峰值。2002-2012年10年間調(diào)水調(diào)沙和暴雨在營養(yǎng)鹽輸送通量上占黃河下游營養(yǎng)鹽輸送通量的23%~68%和5%~59%,對營養(yǎng)鹽年入海通量的平均貢獻(xiàn)分別為38%和24%,二者均在短期內(nèi)導(dǎo)致水、沙和營養(yǎng)鹽的大量輸送,將對黃河口及其鄰近海域的生態(tài)環(huán)境產(chǎn)生重要的影響。
[Abstract]:From February 2012 to March 2014, water samples were collected from the lower reaches of the Yellow River to analyze the intermonthly, seasonal and seasonal changes of nutrient concentrations and fluxes in the lower reaches of the Yellow River, as well as the changes in the periods of water and sediment transfer and heavy rain. The contribution of water transport and nutrient flux to the annual flux of the Yellow River during the period of water and sediment transfer and flood was estimated. The results show that NO-3 is the main form of TDN. The main form of TDP in dry season is higher than that in high water season, and the main form of TPP is TPP. High DIN/DIP and DSI / DIPs and low DSI / DINs were found in the Yellow River water, which deviated seriously from the Redfield ratio. The nutrient transport flux had a strong intermonthly variation. In the maximum month of runoff and sediment transport, there is also a peak value of nutrient salt flux into the sea. During the 10 years from 2002 to 2012, water and sediment transfer and heavy rain accounted for 23% and 55,959% of the nutrient transport flux in the lower Yellow River. The average contribution was 38% and 24%, respectively, both leading to water in the short term. The mass transport of sand and nutrients will have an important impact on the ecological environment of the Yellow River Estuary and its adjacent sea areas.
【作者單位】： 中國海洋大學(xué)海洋化學(xué)理論與工程技術(shù)教育部重點實驗室;青島海洋科學(xué)與技術(shù)國家實驗室海洋生態(tài)與環(huán)境科學(xué)功能實驗室;
【基金】：國家重點研發(fā)計劃項目(2016YFA0600902) 山東省“泰山學(xué)者”工程專項經(jīng)費 青島海洋科學(xué)與技術(shù)國家實驗室“鰲山人才”計劃項目(2015ASTP-OS08)
【分類號】：P734;X55
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本文編號：1657395