Comprehensive Assessment and Simulation of Eutrophication of Hasu Sea Water Environment in Inner Mongolia

DOI: https://doi.org/10.62517/jiem.202303104

Author(s)

Huo Haiying 1, Zhang Hao 2,*, Han Zigeng 3, Qu Rong 3, Quan Dong 2, Ji Xinpei 2, Zhao Dalu 4, Fu Hao 5, Wang Luchen2

Affiliation(s)

1Bayannur City Urat National Nature Reserve Administration, Bayannur, Inner Mongolia, China 2School of Water Conservancy and Civil Engineering, Inner Mongolia Agricultural University, Hohhot, Inner Mongolia, China 3Inner Mongolia Shunyuan Hydrological Survey Co., Ltd., Hohhot, Inner Mongolia, China 4Balin Left Banner Water Conservancy Bureau, Chifeng, Inner Mongolia, China 5School of Life Sciences, Inner Mongolia University, Hohhot, Inner Mongolia, China *Corresponding Author

Abstract

Hasuhai is situated in Hohhot's Tumet Left Banner. In recent years, due to tourism, some natural causes and human activities, the eutrophication of Hasuhai has gradually increased. Data from each Hasuhai monitoring point between May and July 2021 are first obtained for this paper，and analyzes the TP, TN, SD, CODmn and Chl in the data A Each element is analyzed, and then the comprehensive trophic state index method is used to evaluate the trophic state of the lake. The evaluation results of the comprehensive nutritional status index method showed that the scores in May and July were 58.18 (slight eutrophication) and 67.12 (moderate eutrophication), demonstrating that the eutrophication in the summer was more than that in the spring and that the process of interannual change had a tendency to gradually deteriorate, which calls for attention to better governance. Chlorophyll (Chl. a), transparency (SD), and total phosphorus (TP), which account for 23.94%, 23.05%, and 20.18% of the Hasu Sea's eutrophication, respectively, are found to have a significant impact on the process. Through comprehensive analysis, it is concluded that the Hasu sea water body is greatly affected by the surrounding canals.

Keywords

Hasuhai; Eutrophication; Comprehensive Trophic State Index Method; Factor

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