Ecological risk evaluation method for soluble organic matter components based on three-dimensional fluorescence technology
A technology of dissolved organic matter and three-dimensional fluorescence, which is applied in the direction of fluorescence/phosphorescence, material analysis and material analysis through optical means, can solve problems such as low operation efficiency, long processing time-consuming cycle, and complicated ecological risk assessment methods, and achieve The effect of high operating efficiency and short time-consuming cycle
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[0049] In this embodiment, taking the Zhangxi River Basin as an example, the method for evaluating the ecological risk of dissolved organic matter components based on the three-dimensional fluorescence technology of the present invention is described.
[0050] (1) Calculation of hazard index H
[0051] Select 16 sample points from the four sub-watersheds of Zhangxi, SW1, SW2, SW3, and SW4, and divide them into two groups according to land use data. The first group is the forest sub-watershed group, which is positively correlated with the forest, such as figure 1 As shown, the first group is on the positive axis of PCA1, including points 1, 3, and 5 in the SW1 region, all points in the SW2 and SW3 regions, and its average forest coverage exceeds 93.7%. The second group is the mixed urban farmland sub-basin group, such as figure 1 As shown, the second group is on the PCA1 negative axis, including most of the SW1 region and all of the SW4 regions (5), whose agricultural and urb...
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Abstract
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