Method and device for obtaining grade distribution of cultivated land soil salinization degree

Abstract

The invention belongs to the technical field of remote sensing image processing, and particularly relates to a method and a device for obtaining grade distribution of soil salinization degree in a cultivated land. According to the method, cultivated land pixels of a cultivated land area in a satellite image of a target area are obtained to construct a two-dimensional feature space of vegetation indexes and salt indexes of the cultivated land pixels of the cultivated land area, the soil salinity of each cultivated land pixel can be obtained according to the vegetation index and the salt index of each cultivated land pixel in the two-dimensional feature space, the level of the soil salinization degree of each cultivated land pixel can be determined according to the soil salinity of each cultivated land pixel, the level of the soil salinization degree of the cultivated land area can be graded, the grade distribution of the soil salinization degree of the cultivated land area in the targetarea can be easily and quickly obtained by use of the satellite image of the target area, and the problem of waste of manpower and material resources in the case of a large number of manual samplingof the cultivated land area in obtaining of the grade distribution of the soil salinization degree in the cultivated land in the prior art can be solved.

Description

technical field [0001] The application belongs to the technical field of remote sensing image processing, and in particular relates to a method and a device for obtaining grade distribution of cultivated land soil salinization degree. Background technique [0002] Soil salinization, also known as soil salinization, is the process of accumulating salt in the soil to form saline (alkaline) soil. The degree of soil salinization of cultivated land has a great influence on the grain productivity in the region, and the graded results of soil salinization degree can effectively guide the optimal layout and dynamic adjustment of crop planting structure. [0003] The existing methods for grading the degree of salinization of cultivated land soil are usually to first measure the soil electrical conductivity and salinity content of several fields in the area, and then obtain the spatial distribution of salinization degree in the whole area through spatial interpolation method. Since t...

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Problems solved by technology

[0004] In view of this, the embodiment of the present application provides a method and device for obtaining graded distribution of soil salinization degree of cultivated land, which can solve the waste of time and manpower existing in the classification of soil salinization degree of cultivated land using the prior art The problem

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