本文選題：汞 + 甲基汞��； 參考：《生態(tài)學(xué)雜志》2017年04期

【摘要】：通過對遼河口三道溝、筆架嶺兩地不同類型濕地土壤中總汞、甲基汞以及影響因素的研究,從植物自然演替的角度,分析了遼河口不同類型濕地總汞、甲基汞的分布及轉(zhuǎn)化因素。結(jié)果表明:不同類型濕地土壤汞含量為0.036~0.069 mg·kg~(-1),土壤甲基汞含量為0.77~2.56μg·kg~(-1);三道溝濕地土壤汞、甲基汞含量明顯低于筆架嶺濕地;從光灘到蘆葦濕地,表層土壤汞、甲基汞含量逐漸降低;從筆架嶺濕地剖面分析來看,從表層到深層,蘆葦濕地、堿蓬濕地土壤汞、甲基汞含量逐漸降低,光灘剖面土壤汞含量先增加后降低再增加,光灘土壤甲基汞含量總體上呈降低趨勢;從土壤總汞、甲基汞與其他影響因素的關(guān)系看,土壤汞與甲基汞具有顯著相關(guān)關(guān)系,土壤汞與鉀、易溶性鹽具有正相關(guān)關(guān)系。
[Abstract]:Based on the study of total mercury, methylmercury and influencing factors in different types of wetland soils in Sandaogou, Liaohe estuary and Bijialing, the total mercury in different types of wetlands in Liaohe estuary was analyzed from the point of view of plant natural succession.Distribution and transformation factors of methylmercury.The results showed that the content of mercury in soil was 0.036 ~ 0.069 mg / kg ~ (-1) and methylmercury in soil was 0.77 ~ 2.56 渭 g 路kg ~ (-1) 路kg ~ (-1) ~ (-1), in Sandaogou wetland, the content of methylmercury in soil was obviously lower than that in penholder wetland, and the content of mercury and methylmercury in surface soil gradually decreased from light beach to Reed wetland.From the analysis of Bijialing wetland profile, from surface to deep layer, the mercury content in Reed wetland and Suaeda salsa wetland soil gradually decreased, and the mercury content in soil increased first and then decreased then increased in Guangtan section.According to the relationship between soil total mercury, methylmercury and other influencing factors, soil mercury has a significant correlation with methylmercury, and soil mercury has a positive correlation with potassium and easily soluble salt.
【作者單位】： 沈陽大學(xué)環(huán)境學(xué)院;沈陽大學(xué)區(qū)域污染環(huán)境生態(tài)修復(fù)教育部重點實驗室;
【基金】：國家自然科學(xué)基金項目(41571085和31300444)資助
【分類號】：S153
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本文編號：1772693