Spatial-temporal distribution and source apportionment of riverine dissolved organic carbon in the Miyun section of the Chaobai River in Beijing, China

被引：0

作者：

Wang, Junjie ^{[1
]}

Pu, Xiao ^{[1
]}

Zhang, Ruining ^{[2
]}

Liu, Xunliang ^{[3
]}

Zhang, Yuhu ^{[1
]}

Wang, Jian ^{[4
]}

Wang, Yifan ^{[1
]}

Meng, Mingxue ^{[1
]}

Li, Siqi ^{[1
]}

机构：

[1] Beijing Laboratory of Water Resources Security, College of Resources Environment and Tourism, Capital Normal University, Beijing

[2] Jincheng Lvhe Environmental Protection Technology Consulting Co. Ltd, Jincheng

[3] Beijing Institute of Mineral Resources and Geology, Beijing

[4] Ecological and Environmental Management Headquarters, Tsingtao Brewery Co., Ltd, Qingdao

来源：

Water-Energy Nexus | 2023年 / 6卷

基金：

中国国家自然科学基金;

关键词：

Chaobai River; Dissolved organic carbon; Dynamics; Fluorescence spectroscopy; Source apportionment;

D O I：

10.1016/j.wen.2023.10.003

中图分类号：

学科分类号：

摘要：

Dissolved organic carbon (DOC) is indicative of water quality in drinking source water and has an impact on drinking water treatment. Exploring occurrence of DOC in drinking source water is of great significance for the drinking water safety in Beijing. This study elucidated spatial-temporal DOC dynamics in the Miyun section of Chaobai River in Beijing of China and identified sources of DOC based on DOC fluorescent spectral characteristics. Results showed that the average riverine DOC concentration was 30.60 mg/L. DOC concentrations in the Miyun section of the Chaobai River were 30.40, 30.24, and 31.09 mg/L in spring, summer and autumn, respectively. DOC concentrations at the three segments of the Miyun section of the Chaobai River (the Chaohe River, the Baihe River and the Chaobai River) were 29.93, 30.29 and 32.57 mg/L, respectively. Land use contributed to DOC variations rather than season and river segment. Significant increases in DOC concentration were observed in river water flowing through farmland and urban areas, and DOC concentration presented the highest after flowing through the farmland area. The results of FI, HIX and BIX showed that DOC mainly came from endogenous sources such as aquatic biological activities, and was less affected by terrestrial inputs. Special attentions ought to be paid on prevention and control of endogenous DOC inputs. © 2023

引用

页码：160 / 166

页数：6

共 44 条

[1]

Amado A.M., Farjalla V.F., Esteves Fde A., Bozelli R.L., Roland F., Enrich-Prast A., Complementary pathways of dissolved organic carbon removal pathways in clear-water amazonian ecosystems: Photochemical degradation and bacterial uptake, FEMS Microbiol. Ecol., 56, pp. 8-17, (2006)

[2]

Bu J., He J., Jiao L., Wu X., Zhang Y., Yang Y., Deng W., Shao Z., Bai R., Qin Y., Wang S., Zhang H., Analysis of distribution characteristics and source of dissolved organic matter in the rivers that flow into the Dianchi Lake Basin, Acta Sci. Circumst., 40, pp. 2795-2804, (2020)

[3]

Chen Z., Li S., Seasonal variation of DOM spectral characteristics of rivers with different urbanization levels in the three gorges reservoir area, Environ. Sci., 42, pp. 195-203, (2021)

[4]

Chen H., Meng W., Zheng B.-H., Wang C.-Y., An L.-H., Optical signatures of dissolved organic matter in the watershed of a globally large river (Yangtze River, China), Limnologica, 43, pp. 482-491, (2013)

[5]

Chen Z., Zhu Z., Song J., Liao R., Wang Y., Luo X., Nie D., Lei Y., Shao Y., Yang W., Linking biological toxicity and the spectral characteristics of contamination in seriously polluted urban rivers, Environ. Sci. Eur., 31, (2019)

[6]

Cheng X., Dong Y., Fan F., Xiao S., Liu J., Wang S., Lin W., Zhou C., Shifts in the high-resolution spatial distribution of dissolved N2O and the underlying microbial communities and processes in the Pearl River Estuary, Water Res., 243, (2023)

[7]

Cheng C., Zhang F., Tan M.L., Kung H.-T., Shi J., Zhao Q., Wang W., Duan P., An C., Cai Y., Li X., Characteristics of dissolved organic matter and its relationship with water quality along the downstream of the Kaidu River in China, Water, 14, (2022)

[8]

Dalzell B.J., Filley T.R., Harbor J.M., Flood pulse influences on terrestrial organic matter export from an agricultural watershed, J. Geophys. Res. Biogeosci., 110, (2005)

[9]

Du X., Faramarzi M., Qi J., Lei Q., Liu H., Investigating hydrological transport pathways of dissolved organic carbon in cold region watershed based on a watershed biogeochemical model, Environ. Pollut., 324, (2023)

[10]

Graeber D., Gelbrecht J., Pusch M.T., Anlanger C., von Schiller D., Agriculture has changed the amount and composition of dissolved organic matter in Central European headwater streams, Sci. Total Environ., 438, pp. 435-446, (2012)

← 1 2 3 4 5 →