ANALYSIS OF TEMPORAL AND SPATIAL CHARACTERISTICS OF WATER QUALITY AND THE IMPACT FACTORS IN DATONG LAKE AREA

DAI Wanqing; YE Chun; LI Chunhua; WEI Weiwei; ZHENG Xiangyong; HU Wen

doi:10.13205/j.hjgc.202202006

Volume 40 Issue 2

Apr. 2022

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Article Navigation > ENVIRONMENTAL ENGINEERING > 2022 > 40(2): 34-41

DAI Wanqing, YE Chun, LI Chunhua, WEI Weiwei, ZHENG Xiangyong, HU Wen. ANALYSIS OF TEMPORAL AND SPATIAL CHARACTERISTICS OF WATER QUALITY AND THE IMPACT FACTORS IN DATONG LAKE AREA[J]. ENVIRONMENTAL ENGINEERING , 2022, 40(2): 34-41. doi: 10.13205/j.hjgc.202202006

Citation:

DAI Wanqing, YE Chun, LI Chunhua, WEI Weiwei, ZHENG Xiangyong, HU Wen. ANALYSIS OF TEMPORAL AND SPATIAL CHARACTERISTICS OF WATER QUALITY AND THE IMPACT FACTORS IN DATONG LAKE AREA[J]. ENVIRONMENTAL ENGINEERING , 2022, 40(2): 34-41. doi: 10.13205/j.hjgc.202202006

Citation:

DAI Wanqing, YE Chun, LI Chunhua, WEI Weiwei, ZHENG Xiangyong, HU Wen. ANALYSIS OF TEMPORAL AND SPATIAL CHARACTERISTICS OF WATER QUALITY AND THE IMPACT FACTORS IN DATONG LAKE AREA[J]. ENVIRONMENTAL ENGINEERING , 2022, 40(2): 34-41. doi: 10.13205/j.hjgc.202202006

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ANALYSIS OF TEMPORAL AND SPATIAL CHARACTERISTICS OF WATER QUALITY AND THE IMPACT FACTORS IN DATONG LAKE AREA

doi: 10.13205/j.hjgc.202202006

1. State Key Laboratory of Environmental Criteria and Risk Assessment, State Environmental Protection Key Laboratory for Lake Pollution Control, National Engineering Laboratory for Lake Pollution Control and Ecological Restoration, Chinese Research Academy of Environmental Sciences, Beijing 100012, China;
2. College of Life and Environmental Science, Wenzhou University, Wenzhou 325035, China

Received Date: 2020-12-23
Available Online: 2022-04-02
Publish Date: 2022-04-02

Abstract

Abstract

To identify Datong Lake's pollution sources and the main influencing factors, the spatial-temporal characteristics about water quality indexes of 33 sample points in Datong Lake were analyzed, based on two analytical methods(the principal component analysis and cluster analysis), and water quality assessment was carried out by two methods(single factor index method and comprehensive water quality identification method), during July to November 2019. Using single factor index method, in July 2019, Datong lake water quality was identified as Ⅴ class, and inferior Ⅴ class in August 2019. From September to November, the water quality got improved, for Ⅳ class. Using the comprehensive water quality identification method, the monthly water quality of Datong lake was in the sequence of(from good to bad): September>November>October>July>August. On the whole, water quality in Datong Lake showed a trend of getting worse. The main factors exceeding the standard were TN and TP, and it's worthy of noting that COD_Mn exceeded the standard in October and November. The water quality was extremely affected by the river entering the lake. In the flood season(July and August), ammonia nitrogen, SS, COD_Mn and TP were the main factors in the lake area, which were mainly from non-point sources such as farmland runoff, livestock and poultry breeding pollution and domestic sewage; in the non-flood season(September to November), the main factors were ammonia nitrogen, nitrate, COD_Mn and TP, which were mainly from domestic sewage and internal pollution, etc., affected by the joint action of multiple pollution sources.
- Datong Lake,
- water pollution,
- spatial-temporal characteristics,
- PCA,
- water quality assessment

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References(34)

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