Remote sensing data-based soil wind erosion monitoring method and system

Abstract

The embodiment of the present invention provides a remote sensing data-based soil wind erosion monitoring method and system. The method comprises the steps of obtaining a remote sensing image of a target area, and according to the remote sensing image, obtaining the environmental remote sensing parameters of the target area; according to the environmental remote sensing parameters and a wind erosion climate factor optimization model, obtaining the wind erosion climate factors of the underlying surfaces of different characteristics of the target area under different monitoring space-time scales; according to the wind erosion climate factors and the environmental remote sensing parameters, utilizing a soil wind erosion amount estimation optimization model to obtain the soil wind erosion amount under the different monitoring space-time scales. The system is used to execute the above method. According to the embodiment of the present invention, by utilizing the environmental remote sensing parameters, and according to the wind erosion climate factor optimization model and the wind erosion amount estimation optimization model, the soil wind erosion amount of the target area at different space-time distributions is obtained, thereby realizing the soil wind erosion monitoring of the target area at any space-time, realizing the space-time dynamic soil wind erosion evaluation, and improving the objectivity and the accuracy of the soil wind erosion evaluation.

Description

technical field [0001] The embodiments of the present invention relate to the technical field of remote sensing, and in particular to a method and system for monitoring soil wind erosion based on remote sensing data. Background technique [0002] Wind erosion refers to the process of wind erosion, transportation and accumulation of soil and its loose parent material, referred to as wind erosion. It blows off the fine soil and nutrients in the soil cultivation layer, exposes the core soil and even the rocks, and reduces land productivity; it exposes the seeds during the planting season, or causes mechanical damage to the seedlings; the dust and sand produced enter the atmosphere and cause environmental pollution. pollute. Wind erosion, especially in arid and semi-arid regions, can lead to soil nutrient loss, sandstorms, vegetation destruction, and even large-scale desertification, seriously threatening regional sustainable development. Therefore, wind erosion monitoring of ...

AI Technical Summary

Problems solved by technology

However, most of the relevant models and methods in the prior art come from the meteorological data of ground stations and auxiliary data of field samples (such as vegetation coverage, etc.), and lack dynamic data such as land use, soil texture, and soil moisture in different spatial distributions. Supported by data, the assessment of soil wind erosion can only be carried out at a specific time and in a specific area

Therefore, it is difficult to assess wind erosion in time and space dynamics, which further affects the monitoring results of soil wind erosion to a certain extent.

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