Lake eutrophication inversion method based on remote sensing data

A technology of remote sensing data and eutrophication, applied in the field of remote sensing, can solve the problems of remote sensing data processing with low resolution of remote sensors, sensor radiation information is easily interfered by external factors, and algorithm applicability limitations
CN112989692APending Publication Date: 2021-06-18NANJING INST OF GEOGRAPHY & LIMNOLOGY
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
NANJING INST OF GEOGRAPHY & LIMNOLOGY
Publication Date
2021-06-18

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Abstract

The invention relates to a lake eutrophication inversion method based on remote sensing data, and the method comprises the steps: dividing a lake water body into two types based on a surface reflectance product data set of a Landsat-8 inland lake and a corresponding actually measured chlorophyll a concentration, carrying out the wave band combination through combining with a baseline method, and respectively constructing inversion models of a nutrition state index TSI for the two types of water bodies. By the adoption of the method, estimation of the Landsat-8OLI in the lake nutrition state index TSI can be achieved, and the algorithm has certain universality and can be suitable for remote sensing estimation of large-scale lake eutrophication; besides, the method is used for observing small and medium-sized lakes, the limitation that a traditional medium-resolution water color satellite cannot observe is made up, lake eutrophication inversion precision and observation scale are improved, and reference is provided for lake water eutrophication monitoring and treatment and sustainable development of the lake water environment.
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Description

technical field

[0001] The invention belongs to the technical field of remote sensing, and in particular relates to a lake eutrophication inversion method based on remote sensing data. Background technique

[0002] With the background of economic development and global climate change, eutrophication of inland water bodies has become a serious global problem (Wen et al.2019). Eutrophication of lakes leads to frequent outbreaks of cyanobacteria blooms, deterioration of lake water quality and degradation of ecosystem functions (Adrian et al.2009; Duan et al.2009; Huisman et al.2018). According to the survey of global lake conditions by the International Commission on Lake Environment, 54% of Asian lakes, 53% of European lakes, 48% of North American lakes, 41% of South American lakes and 28% of African lakes are affected by eutrophication (www .lescienze.it). Therefore, lake eutrophication monitoring has become the most urgent practical demand for inland lakes (IOCCG 2018). T...

Claims

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