SOURCE IDENTIFICATION OF PHOSPHORUS IN VARIOUS DISTURBED RIVERS BASED ON LAM MODEL

GAO Wei; CHEN Yan; YAN Changan; LIU Yong

doi:10.13205/j.hjgc.202206007

Volume 40 Issue 6

Sep. 2022

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GAO Wei, CHEN Yan, YAN Changan, LIU Yong. SOURCE IDENTIFICATION OF PHOSPHORUS IN VARIOUS DISTURBED RIVERS BASED ON LAM MODEL[J]. ENVIRONMENTAL ENGINEERING , 2022, 40(6): 55-62. doi: 10.13205/j.hjgc.202206007

Citation:

GAO Wei, CHEN Yan, YAN Changan, LIU Yong. SOURCE IDENTIFICATION OF PHOSPHORUS IN VARIOUS DISTURBED RIVERS BASED ON LAM MODEL[J]. ENVIRONMENTAL ENGINEERING , 2022, 40(6): 55-62. doi: 10.13205/j.hjgc.202206007

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SOURCE IDENTIFICATION OF PHOSPHORUS IN VARIOUS DISTURBED RIVERS BASED ON LAM MODEL

doi: 10.13205/j.hjgc.202206007

GAO Wei¹,
CHEN Yan²,
YAN Changan³,
LIU Yong^{4
,
,}

1. Guangdong Provincial Key Laboratory of Water Quality Improvement and Ecological Restoration for Watersheds, School of Ecology, Environment and Resources, Guangdong University of Technology, Guangzhou 510006, China;
2. State Environmental Protection Key Laboratory of Environmental Planning and Policy Simulation, Chinese Academy of Environmental Planning, Beijing 100012, China;
3. Kunming Institute of Eco-Environmental Sciences, Kunming 650032, China;
4. College of Environmental Sciences and Engineering, Peking University, Beijing 100871, China

Received Date: 2021-11-16
Available Online: 2022-09-01
Publish Date: 2022-09-01

Abstract

Abstract

It is generally difficult to quantify the phosphorus source of high-intensity and complex human interference rivers,so a pollution source apportionment model based on the relationship between flow and pollutant concentration was constructed to identify the point source and non-point source load and time contribution of river phosphorus.Taking the upstream river,river with reservoir and river with both reservoir and water transfer project in the Lake Dianchi Basin as the objects,the response relationship between river phosphorus concentration and flow was established by LAM model,and the source contribution structure and spatiotemporal distribution of phosphorus in main rivers were analyzed.Results showed that non-point source was the major source of phosphorus in the main rivers entering the Dianchi Lake in 2018,and the non-point source load accounted for 53%~100%,with a negligible difference between flood season and all year round;as for the dominant time of pollution sources,point sources account for the highest time proportion in the Baoxiang River and the Dahuaqiao-Deshengqiao section of the Panlong River,indicating that point source control was still of great significance to improve water quality in low flow seasons.The results can provide reference and guidance for identifying phosphorus pollution sources in many human disturbance rivers in China.
- source apportionment,
- receptor model,
- load apportionment model (LAM),
- nutrients,
- human interference

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References(30)

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