發(fā)布時間：2018-06-05 07:45

  本文選題：黃河三角洲 + 潮間帶��； 參考：《海洋環(huán)境科學(xué)》2017年02期

【摘要】：本文以木質(zhì)素為示蹤物,認(rèn)識陸源有機碳在黃河口潮間帶的降解和輸送特征�，F(xiàn)場調(diào)查和樣品采集進行于2012年5月、8月和11月,以及2013年3月。結(jié)果表明:黃河口潮間帶有機碳含量為0.06%~0.40%,δ~(13)C變化范圍為-24.4‰~-20.4‰,表現(xiàn)為陸�；旌蟻碓刺卣�;木質(zhì)素Σ8含量范圍為0.13~0.54 mg/10g dw,均值為0.23 mg/10g dw,由黃河口門向南北遞減;Λ8為0.49~2.42 mg/100 mg OC,均值為1.35 mg/100 mg OC,由南向北逐漸降低;木質(zhì)素主要來源為被子植物草本和木本組織,草本和木本組織的相對貢獻呈現(xiàn)季節(jié)變化;木質(zhì)素通過氧化和去甲基/甲氧基2種過程降解,其中去甲基/去甲氧基降解作用更強,降解水平處于中等偏強。
[Abstract]:In this paper, the degradation and transport characteristics of terrestrial organic carbon in the intertidal zone of the Yellow River Estuary are studied with lignin as tracer. Field investigations and sample collection were conducted in May, August and November 2012 and March 2013. The results show that the content of organic carbon in the intertidal zone of the Yellow River Estuary is 0.06 ~ 0.40%, and the variation range of 未 ~ (13) C is -24.4 鈥，

本文編號：1981214