## 3 Results
### Template of Environmental Factors for Lyc-A
#### 3.2.1 Water Color Factors Contributing to the Template for LYC-A  
To achieve this, the SPM-CT suspended sediment concentration inversion formula (Equation (6)) was utilized in conjunction with remote sensing data from the Chinese GF satellite series, specifically GF-WFV imagery. The corresponding satellite image processing software was employed to generate a spatial distribution map of the suspended sediment concentration. The coastal waters of Zhejiang province were designated as the study area, with the observation period spanning from 2020 to 2022. In addition, the SS-1 Chl-a inversion formula (Equation (6)) was utilized in conjunction with remote sensing data from the Chinese HY-1C/D CZI sensor series. The corresponding satellite image processing software was employed to generate a spatial distribution map of the Chl-a concentration. The coastal waters of Zhejiang province were designated as the study area, with the observation period spanning from 2022 to 2023. The spatial distribution of SSC in the coastal waters of Zhejiang province shows significant seasonal variation and spatial heterogeneity (Figure 5a). The nearshore region, particularly in Hangzhou Bay, exhibits higher suspended sediment concentration due to the combined effects of tidal effects, the hydrological dynamic mechanism leading to sediment accumulation, and the bay's trumpet-shaped topography, which results in silting and scouring on the northern and southern banks. Seasonally, Hangzhou Bay experiences higher suspended sediment content, with sediment accumulating in spring and summer and being exported in autumn and winter. In the cage aquaculture area located above 30\({}^{\circ}\)N latitude, the concentration of suspended sediment ranges from 130 to 150 mg/L during spring and summer (Figure 5a(B-E)) and increases to 260 to 300 mg/L during autumn and winter (Figure 5a(A,F-I)). In contrast, the cage aquaculture area situated below 30\({}^{\circ}\)N latitude generally has lower suspended sediment content, with spring and summer levels between 150 and 180 mg/L (Figure 5a(J)) and autumn and winter levels between 170 and 200 mg/L (Figure 5a(G,H)). Figure 5: Ocean color distribution in the study area from 2020 to 2023. The distribution of SSC is (**a**), and the distribution of Chl-a is (**b**). The red boxes in (**a**) are typical large yellow croaker cage culture areas. The black triangle in (**b**) represents HY-1C CZI satellite data, and the rest is HY-1D CZI satellite data. The spatial and temporal distribution characteristics of Chl-a in the coastal waters of Zhejiang Province are evident, with higher concentrations closer to the coast (Figure 5b). Throughout the year, the concentration of Chl-a in summer and autumn is lower than that in winter and spring (Figure 5b(A-L)). The regions with high Chl-a concentrations are consistent with areas of low SST within the same season, suggesting a relationship with the upwelling phenomenon. In the cage aquaculture area for large yellow croaker located north of 30\({}^{\circ}\)N, the Chl-a concentration in spring ranges from 1 to 1.5 mg/m\({}^{3}\) (Figure 5b(G-L)), in summer from 0.8 to 1.0 mg/m\({}^{3}\) (Figure 5b(A)), in autumn from 1.2 to 1.4 mg/m\({}^{3}\) (Figure 5b(B,C)), and in winter from 2 to 2.2 mg/m\({}^{3}\) (Figure 5b(D-F)). In the cage farming area for large yellow croaker located south of 30\({}^{\circ}\)N, the Chl-a concentration in spring, summer, autumn, and winter is in the range of 0.8-1.0, 1.1-1.3, 0.7-0.9, and 1.5-1.7 mg/m\({}^{3}\), respectively (Figure 5b(D-F,M-R)). Quantitative analysis reveals that the Chl-a concentration in the large yellow croaker farming area north of 30\({}^{\circ}\)N is higher than that in the area south of 30\({}^{\circ}\)N (Figure 5b). In addition to the seasonal variations in suspended sediment concentration and Chl-a, the influence of the river plume on these water quality parameters should also be considered.