| Issue |
E3S Web Conf.
Volume 717, 2026
2026 8th International Conference on Environmental Prevention and Pollution Control Technologies (EPPCT 2026)
|
|
|---|---|---|
| Article Number | 01006 | |
| Number of page(s) | 8 | |
| Section | Water and Air Pollution Control | |
| DOI | https://doi.org/10.1051/e3sconf/202671701006 | |
| Published online | 05 June 2026 | |
Evaluation of the Water Environment Improvement Effect of the Niulanjiang-Dianchi Water Diversion Project on the Outer Lake of Dianchi Lake
1 Yunnan Institute of Water & Hydropower Engineering Investigation, Design Co., Ltd, Kunming, Yunnan, 650021, China
2 Yunnan Institute of Water & Hydropower Engineering Investigation, Design and Research, Kunming, Yunnan, 650021, China
3 State Key Laboratory of Water Resources Engineering and management, Wuhan University, Wuhan, Hubei, 430072, China
* Corresponding author: This email address is being protected from spambots. You need JavaScript enabled to view it.
Abstract
The Niulanjiang-Dianchi Water Diversion Project is one of the key measures for the comprehensive treatment of the water environment of Dianchi Lake. Assessing its actual effect on improving the water environment of Dianchi Lake during operation is of great importance for the quantitative evaluation of project benefits. Taking the outer lake of Dianchi Lake as the study area, this research was based on measured water quality data. By comparing the changes in major pollutant indicators, trophic state index, and aquatic biological indicators before and after project operation, and investigating their correlation relationships with driving factors, the improvement effect of the project on the water environment of the outer lake of Dianchi Lake was analyzed. The results show that the water quality of the outer Dianchi Lake shows a significantly negative correlation with the total inflow discharge into the lake, after the implementation of the Niulanjiang-Dianchi Water Diversion Project, the concentrations of four major pollutants in the outer lake of Dianchi Lake, namely NH3-N, TP, CODMn, and TN, decreased significantly. The eutrophication level improved markedly, and algal cell density declined substantially. The project has achieved a clear improvement effect on the water environment of the outer lake of Dianchi Lake. The findings can provide a reference for inter-basin water diversion projects aimed at controlling lake water pollution.
© The Authors, published by EDP Sciences, 2026
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.