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Method for estimating reservoir nutrition state index by using satellite remote sensing reflectivity

A nutritional status, satellite remote sensing technology, applied in the direction of testing water, material inspection products, color/spectral property measurement, etc. Simple operation and the effect of reducing precision errors

Pending Publication Date: 2022-07-05
CHINA FORESTRY STAR BEIJING TECH INFORMATION CO LTD
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Problems solved by technology

[0006] In order to solve the cumbersome operation of the existing reservoir nutrient degree evaluation method, and the problems of poor universality and large errors in the method of inversion estimation of the trophic state of a single inland lake reservoir using Landsat5 TM and other remote sensing image reflectance data, the present invention provides A Method for Estimating Reservoir Nutrient Status Index Using Satellite Remote Sensing Reflectance

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  • Method for estimating reservoir nutrition state index by using satellite remote sensing reflectivity
  • Method for estimating reservoir nutrition state index by using satellite remote sensing reflectivity
  • Method for estimating reservoir nutrition state index by using satellite remote sensing reflectivity

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specific Embodiment approach 1

[0059] A method for estimating a reservoir nutritional state index using satellite remote sensing reflectivity of the present embodiment specifically includes the following steps:

[0060] (1) Reservoir field sampling and Carlson nutrient index TSI M calculate

[0061] 1) Reservoir field sampling

[0062] Collect 135 sampling points in 93 reservoirs nationwide, and the distribution of reservoir water samples is as follows figure 1 (where the verification point is the reservoir location). The water samples were collected at a position 0.1m below the central water surface of the lake and reservoir, and the volume of each water sample was 2L. At the same time, the GPS position of each sampling point was recorded, and the transparency (SDD) of the water body of the water sample was measured on the spot using the Saxon disk. The water samples were stored in a refrigerator at 4°C and returned to the laboratory as soon as possible.

[0063] 2) Carlson Nutrition Index TSI M calcu...

specific Embodiment approach 2

[0100] A method for estimating a reservoir nutritional state index using satellite remote sensing reflectivity of the present embodiment specifically includes the following steps:

[0101] (1) Reservoir field sampling and Carlson nutrient index TSI M calculate

[0102] 1) Reservoir field sampling

[0103] Collect 100 sampling points in 93 reservoirs nationwide, and the distribution of reservoir water samples is as follows figure 1 shown. The water samples were collected at a position 0.1m below the central water surface of the lake and reservoir, and the volume of each water sample was 2L. At the same time, the GPS position of each sampling point was recorded, and the transparency (SDD) of the water body of the water sample was measured on the spot using the Saxon disk. The water samples were stored in a refrigerator at 4°C and returned to the laboratory as soon as possible.

[0104] 2) Carlson Nutrition Index TSI M calculate

[0105] Chlorophyll a (Chla) and total phosp...

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Abstract

A method for estimating a reservoir nutrition state index by using satellite remote sensing reflectivity belongs to the field of reservoir drinking water source ground water environment evaluation, and comprises the steps of reservoir field sampling and Kalson nutrition index TSIM calculation; obtaining and processing the actually measured field hyperspectral reflectivity Rrs, and calculating the actually measured corrected Kalson nutrition index point of the reservoir; acquiring satellite remote sensing reflectivity of satellite-ground synchronous matching; performing precision analysis on the actually measured Kalson nutrition index TSIM and the field hyperspectral reflectivity modeling estimated TSI; and evaluating the eutrophication degree of the reservoir at each sampling point according to the According to the method, the tedious evaluation process of an existing method is omitted, operation is easy and convenient, reservoir nutrition state index calculation is accurate, precision errors caused by multiple times of inversion estimation of water quality parameters are reduced, the method has certain reliability and operability, a large amount of manpower, material resources and financial resources are saved, and the method has the universality of direct application and popularization.

Description

technical field [0001] The invention belongs to the technical field of water environment assessment of drinking water sources in reservoirs, and in particular relates to a method for estimating a reservoir nutritional state index by using satellite remote sensing reflectivity. Background technique [0002] Reservoir is an important source of drinking water in my country. It has the functions of providing residents with water for production and living, hydropower generation and transportation, and climate regulation. It plays a pivotal role in my country's social and economic development and ecological environment construction. With the development of social economy, industrial point source pollution, agricultural non-point source pollution, the progress of industrial and agricultural technology and the influence of human activities and life, the factors that pollute reservoirs are increasing day by day. Among them, the eutrophication of reservoirs is the most serious environ...

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Application Information

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IPC IPC(8): G01N21/25G01N33/18
CPCG01N21/25G01N33/18G01N2021/1793
Inventor 尚盈辛宋开山黄艳金王生杰曹禹
Owner CHINA FORESTRY STAR BEIJING TECH INFORMATION CO LTD
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