三江源龙宝湖湿地沉积物TOC、TN和TP分布特征

IF 2 4区地球科学 Q2 GEOCHEMISTRY & GEOPHYSICS

Acta Geophysica Pub Date : 2016-12-28 DOI:10.1515/acgeo-2016-0093

Sujin Lu, Jian-Huan Si, Y. Qi, Zhanqing Wang, Xiaocui Wu, Chuanying Hou

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引用次数: 9

摘要

研究了湿地沉积物中营养物质的分布规律，为揭示湿地富营养化过程和内部污染源的机制提供了依据。研究了沉积物样品的总有机碳(TOC)、总氮(TN)和总磷(TP)含量及其分布特征。结果表明:TOC浓度范围为3.81 ~ 15.6 g/kg, TN浓度范围为0.21 ~ 1.18 g/kg，平均为0.66 g/kg, TP浓度范围为0.16 ~ 0.35 g/kg，平均为0.23 g/kg。TOC与TN (R2 = 0.96)、TN与TP (R2 = 0.97)呈密切相关，表明沉积物中TN和TP来源相似。龙宝湖湿地沉积物中TOC、TN和TP浓度过低，不可能发生富营养化。调查结果表明，龙宝湖的形成与其说是人为活动，不如说是自然演化。

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Distribution Characteristics of TOC, TN and TP in the Wetland Sediments of Longbao Lake in the San-Jiang Head Waters

The study deals with the distribution of nutrients in wetland sediments, which provide the basis for revealing the wetland eutrophication processes and mechanisms of internal pollution sources. The total organic carbon (TOC), total nitrogen (TN), and total phosphorus (TP) contents and distribution characteristics of sediment samples were examined. The results showed that the TOC concentration ranged from 3.81 to 15.6 g/kg, the TN concentration ranged from 0.21 to 1.18 g/kg with a mean concentration of 0.66 g/kg, and the TP concentration ranged from 0.16 to 0.35 g/kg with a mean of 0.23 g/kg. Statistical analysis showed close correlations between TOC and TN (R2 = 0.96), and TN and TP (R2 = 0.97), which indicated that the TN and TP in the sediments were from similar sources. The concentrations of TOC, TN, and TP in Longbao Lake wetland sediments were too low for eutrophication to occur. Our investigation indicated that Longbao Lake undergoes natural evolution rather than anthropogenic activities.

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来源期刊

Acta Geophysica 地学-地球化学与地球物理

CiteScore

3.90

自引率

13.00%

发文量

251

审稿时长

5.3 months

期刊介绍： Acta Geophysica is open to all kinds of manuscripts including research and review articles, short communications, comments to published papers, letters to the Editor as well as book reviews. Some of the issues are fully devoted to particular topics; we do encourage proposals for such topical issues. We accept submissions from scientists world-wide, offering high scientific and editorial standard and comprehensive treatment of the discussed topics.