Evolution trend of the water quality in Dongping Lakeafter South-North Water Transfer Project in China

• 作者: HU Zun-fang KANG Feng-xin KANG Gui-ling LI Yang TIAN Tong-liang YU Lin-song ZOU An-de
• 来源期刊: 地下水科学与工程:英文版
• 学科: 地球科学
• 关键词: South-North WATER Transfer Project Dongping LAKE WATER quality NUTRITION Health risk
• 年，卷（期）: dxskxygcywb_2019,（4）
• 页码范围: 333-339
• 页数: 7页
• 分类号: P59

摘要

To investigate the evolution trend of water quality in Dongping Lake after South-North Water Transfer Project operation as well as to ensure the safe usage of the water receiving areas, water samples were collected and determined before and after water delivery in different hydrological seasons. Then, comprehensive pollution index method, comprehensive nutrition state index method and health risk assessment model were utilized to evaluate the quality, nutrition, and health risk of Dongping Lake water. Results showed that the quality of Dongping Lake water still met level Ⅲ (light pollution) no matter before or after water delivery. The nutrition state was improved from light eutropher before water delivery to mesotropher after water delivery. The health risk level was reduced from high-medium before water delivery to medium level after water delivery. In summary, the operation of the eastern route of South-North Water Transfer Project is beneficial for water environment improvement of Dongping Lake.