Author(s): Ming-Hang Shi; Ming-Cong Lv; Zhong-Mei Wang; Wen-Jiao Zhang And Xing Zhao
Linked Author(s):
Keywords: Meteorological factors Chlorophyll a Generalized additive model Dongping Lake
Abstract: In order to explore the response of lake water environment to climate change in the context of global climate change. This paper takes Dongping Lake in Shandong as an example, and based on the day-by-day monitoring data of Chla concentration, TP concentration, temperature, precipitation, maximum wind speed, sunshine duration and other climatic factors in Dongping Lake from 2014 to 2020, the seasonal distributions of Chla concentration, TP concentration and some meteorological conditions in Dongping Lake were statistically analyzed, and the correlation between the Chla concentration and TP concentration, as well as the meteorological conditions, such as temperature, precipitation, maximum wind speed, sunshine duration and other meteorological conditions, was analyzed in the 7-year period by using the generalized additive model (GAM). The correlation between Chla concentration and TP concentration, as well as air temperature, precipitation, maximum wind speed, sunshine duration and other meteorological conditions were analyzed, and the response relationship between Chla concentration and meteorological factors was analyzed by using the generalized additive model (GAM). The results showed that in the annual average samples of precipitation, air temperature and sunshine duration, these three meteorological factors were significantly correlated with Chla concentration; among them, air temperature showed a significant positive correlation with Chla concentration, while rainfall and sunshine showed a nonlinear relationship with Chla concentration, which increased firstly and then decreased later; moreover, in the spring samples, rainfall and maximal wind speed also had a nonlinear relationship with Chla concentration, which also increased firstly and then decreased later. In addition, rainfall and maximum wind speed were also non-linearly related to Chla concentration in the spring samples, which also showed an increase and then a decrease. The results of this study can provide a scientific basis for water quality protection and water environment management of Dongping Lake.
Year: 2025