本文選題：南海 + 降水��； 參考：《中國環(huán)境科學》2016年11期

【摘要】：于2013年對南海西沙永興島雨水進行采集,分析了其主要陰陽離子,利用PMF模型對不同離子組成的來源進行解析并運用Traj Stat軟件模擬后向氣團軌跡污染物來源區(qū)域的分析.結(jié)果表明,永興島降水離子濃度順序為:Cl~-、SO_4~(2-)、NO_3~-和Na~+、Ca~(2+)、Mg~(2+)、NH_4~+、K~+.Na~+和Cl~-是降水中主要的陰陽離子,表現(xiàn)出海洋性降水的特征.SO_4~(2-)、Mg~(2+)、K~+主要來源于海水,但SO_4~(2-)也受化石燃料燃燒等影響,而K~+可能受生物質(zhì)燃燒的影響.Ca~(2+)主要來源于土壤,少數(shù)來源于其他影響.NO_3~-主要來源于化石燃料燃燒釋放,而NH_4~+有多種來源,包括內(nèi)陸人為活動的排放和海洋本身有機物降解過程釋放的影響.根據(jù)Redfield比,可以初步計算出降水中NO-3~-和NH_4~+對南海新生產(chǎn)力的貢獻約為4.8%~13.5%.后向氣團軌跡表明,永興島降水的離子來源區(qū)域相對復雜,包括我國東北地區(qū)、南方區(qū)域,以及馬來西亞等國家、地區(qū)的影響,或者來源于南海局地的影響.
[Abstract]:In 2013, the rainwater of Yongxing Island, Xisha, Xisha, South China Sea was collected, and the main Yin and yang ions were analyzed. The sources of different ions were analyzed by PMF model and the source region of the air mass trajectory was simulated by Traj Stat software. The results showed that the order of precipitation ion concentration in Yongxing island was Cl~-, SO_4~ (2-), NO_3~- and Na~+, Ca~ (2+), Mg~ (2+), NH_4~+, K~+.Na~+ and Cl~- are the main Yin and yang ions in precipitation, showing the characteristics of marine precipitation,.SO_4~ (2-), Mg~ (2+), and K~+ mainly originate in the sea water, but they are also affected by the combustion of fossil fuels. It is mainly derived from the release of fossil fuel combustion, while NH_4~+ has a variety of sources, including the emission of inland human activities and the release of the degradation process of the marine organic matter. According to the Redfield ratio, the contribution of NO-3~- and NH_4~+ to the new productivity of the South China Sea in the precipitation can be estimated to be about 4.8%~13.5%. back air mass trajectory. The ion source regions of water are relatively complex, including the influence of the northeast region, the southern region, and the Malaysia and other countries, or the effects of the South China Sea.
【作者單位】： 東華理工大學核資源與環(huán)境教育部重點實驗室大氣環(huán)境實驗室;東華理工大學水資源與環(huán)境工程學院;中國科學院地球化學研究所環(huán)境地球化學國家重點實驗室;中國環(huán)境科學研究院;中國科學院南海海洋研究所熱帶海洋環(huán)境國家重點實驗室;
【基金】：國家自然科學基金資助項目(41663003,41203015,41425014) 東華理工大學校科技創(chuàng)新團隊科研啟動基金項目(DHKT2015101);東華理工大學博士科研啟動基金項目(DHBK2015327)
【分類號】：X51;P426.612

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