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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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

CN110472819AActive Publication Date: 2019-11-19INST OF URBAN ENVIRONMENT CHINESE ACAD OF SCI +2

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Embodiment 1

[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

The invention relates to an ecological risk evaluation method for soluble organic matter components based on three-dimensional fluorescence technology, and belongs to the technical field of regional ecological risk evaluation. The method comprises the following steps: constructing an intra-regional hazard index H evaluation index system by taking a soluble organic component source generated by human activity pollution in a water sample in a regional water sample as a content, and evaluating the hazard index H in the regional hazard index H; constructing a vulnerability index V evaluation indexsystem, and evaluating the vulnerability index V of the ecosystem in the region; and creating an ecological risk calculation formula as follows: Risk = hazard index Hn frangibility index V. The soluble organic component based on the three-dimensional fluorescence technology is short in consumed time, simple and efficient.

Description

technical field [0001] The invention belongs to the technical field of regional ecological risk assessment, and relates to a method for evaluating the ecological risk of dissolved organic matter components based on three-dimensional fluorescence analysis technology. Background technique [0002] With the rapid development of urbanization and the continuous concentration of population, the urban land use mode has undergone a sharp change and caused the deterioration of the water environment. The sources of dissolved organic matter in the water body of the basin are animal and plant residues, soil, excreta produced by algae activities, and environmental pollutants discharged by human activities, mainly including humic acid, fulvic acid, and amino acids. These dissolved organic matter may come from pollutants discharged by human society, or from the degradation of plankton secretions and residues in soil and water, among which humus and some proteins are fluorescent. Tracking ...

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Application Information

Patent Timeline

19 Nov 2019

Publication

CN110472819A

IPC: G06Q10/06; G06Q50/26; G01N21/64

CPC: G06Q10/0635; G06Q10/06393; G06Q50/26; G01N21/64; G01N2021/6419; Y02A20/152

Inventors: 唐剑锋; 汪文东