Barely Significant

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In the five periods from 2000 to 2019, the Class II area is 1,250,600 hm 2 , 1,234,600 hm 2 , 1,618,900 hm 2 , 1,811,900 hm 2 , and 1,584,600 hm 2 respectively, accounting for 33.21%, 33.32%, 43.97%, 50.65%, and 48.67% of the total cultivated land area ( Table 5 ) and showing an increasing trend year by year.
The global Moran’s I values in the five periods are all greater than 0, and through the significance test of the 5% confidence level, the overall shows a fluctuating upward trend, indicating that there is a significant spatial positive autocorrelation in the health index in each grid of the two lake plains, and that its spatial distribution was not random, there is an obvious trend of agglomeration and distribution of adjacent grids in space.
An overall trend of decreasing concentrations with increasing fish size classes was observed for some PAHs (Naphtalene, Pyrene in muscles, for Pyrene, Benzo(a)Anthracene, Chrysene in gills and for Naphtalene, Phenanthrene in livers).
Conclusions The main conclusions of this research are as follows: The overall level of EWP in the TGRA from 2010 to 2020 is low and varies widely among districts, failing to achieve effective DEA, but showing a favorable trend of year-on-year improvement.
It can be seen from Figure 9 that the level of safety culture among residents during COVID-19 had an increasing trend with the distance from the infected individuals, mainly because there were differences in risks of virus infection, and the closer the infected individuals, the higher the risk of virus infection.