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Soil moisture downscaling method and device, electronic equipment and storage medium

A technique of soil moisture and downscaling, applied in branch and bound, dynamic trees, instruments, etc.

Pending Publication Date: 2022-06-10
CHINA AGRI UNIV
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Problems solved by technology

[0006] The purpose of the present invention is to provide a soil moisture downscaling method, device, electronic equipment and storage medium, which can solve the problem that soil moisture data cannot be adapted to fine research problems and reduce the impact of vegetation on the inversion process, realize the spatial scale conversion of soil moisture data and the fine mapping of soil moisture and drought monitoring of different band combinations, and provide the possibility for long-term monitoring of soil moisture and obtaining agricultural moisture data

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  • Soil moisture downscaling method and device, electronic equipment and storage medium
  • Soil moisture downscaling method and device, electronic equipment and storage medium
  • Soil moisture downscaling method and device, electronic equipment and storage medium

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Embodiment Construction

[0037] Unless expressly stated otherwise, throughout the specification and claims, the term "comprise" or variations thereof such as "includes" or "includes" and the like will be understood to include the stated elements or constituents, and not Other elements or other components are not excluded.

[0038] figure 1 It is a schematic flow chart of a soil moisture downscaling method provided in the embodiment of the present invention, such as figure 1 As shown, the method includes:

[0039] S1, obtaining the first type of surface temperature data, the first type of surface albedo data and the first type of elevation data of the first spatial resolution of the target area;

[0040] S2. Based on the first type of surface albedo data, calculate the first type of index data of the target soil moisture index in the target area, and combine the first type of surface temperature data, the first type of index data, and the The first type of elevation data is input to the soil moistur...

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Abstract

The invention discloses a soil moisture downscaling method and device, electronic equipment and a storage medium, and the method effectively utilizes the advantages of first type of surface temperature data, first type of surface reflectance data and first type of elevation data in spatial resolution and the nonlinear relation between a target soil moisture index and soil moisture. A soil moisture downscaling model constructed based on a decision tree model is applied to high-resolution input data, so that spatial heterogeneity of a target soil moisture index and dynamic change of soil moisture along with time can be effectively captured; and the obtained first type of soil moisture data and the original second type of soil moisture data have a high spatial correspondence relationship, and soil moisture information which is more detailed than the second spatial resolution is provided.

Description

technical field [0001] The present invention relates to the technical field of remote sensing, in particular to a soil moisture downscaling method, device, electronic equipment and storage medium. Background technique [0002] Surface soil moisture is an important boundary regulator for hydrological and climate models and plays a key role in the terrestrial water cycle and land-atmosphere energy interactions. Therefore, obtaining accurate information on the temporal and spatial distribution and change of soil moisture is of great significance for agricultural-related research such as drought monitoring, agricultural management, water resource assessment, runoff prediction, crop growth analysis, and yield estimation. [0003] Traditional soil moisture monitoring methods mainly include dry weighing method, neutron meter method, time domain reflectometer and frequency domain reflectometer. However, all ground-based methods and techniques can only provide point-based measuremen...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06N5/00
CPCG06N5/01
Inventor 刘忠郑曼迪
Owner CHINA AGRI UNIV
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