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Technical method for high-spectrum identification of soil property

A kind of identification technology, hyperspectral technology, applied in the field of hyperspectral identification of soil attributes, can solve the problems of little research in measurement, and achieve the effect of improving pertinence

Active Publication Date: 2015-06-10
BEIJING NORMAL UNIVERSITY
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Problems solved by technology

However, the existing hyperspectral remote sensing technology has little research on the measurement of soil erodibility.

Method used

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  • Technical method for high-spectrum identification of soil property

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Embodiment 1

[0026] refer to figure 1 , a soil attribute hyperspectral identification technology method of the present embodiment, the method includes the following steps:

[0027] S1, based on remote sensing satellite data, obtain soil hyperspectral images at different times;

[0028] S2. After image preprocessing is performed on the hyperspectral image of the soil, bare soil is obtained through supervised classification, and then the surface reflectance of the bare soil is extracted;

[0029] S3, designing an indoor soil erodibility test, obtaining soil erodibility data corresponding to the acquisition time of the soil hyperspectral image, and establishing a bare soil surface reflectance inversion model according to the surface reflectance of the bare soil;

[0030] The soil erodibility data includes: the reflectance of the measured soil before the rainfall and the reflectance of the measured soil after the rainfall;

[0031] S4, obtain the soil classification and calculate the soil K ...

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Abstract

The invention provides a technical method for high-spectrum identification of a soil property and relates to the technical field of soil exploration. The method comprises the steps: S1, acquiring soil high-spectrum images at different time based on remote sensing satellite data; S2, pre-treating the images, supervising and classifying to obtain naked soil, extracting surface reflectance of the naked soil and establishing a surface reflectance inversion model for the naked soil according to the surface reflectance of the naked soil; S3, designing an indoor soil corrosion test and acquiring soil erodibility data corresponding to the acquisition time of the soil high-spectrum images; S4, acquiring soil classification and calculating a soil K value according to the soil erodibility data acquired in the step S3; and S5, establishing a high-spectrum model for influencing the soil property of the erodibility K according to the soil K value and the spectral data in the surface reflectance inversion model. The technical method solves the problem that the high-spectrum remote sensing technique is capable of measuring soil erodibility.

Description

technical field [0001] The invention relates to the technical field of soil exploration, in particular to a technical method for hyperspectral identification of soil attributes. Background technique [0002] With the continuous improvement of spectral resolution, reaching the nanometer level, it can objectively reflect the spectral characteristics and their weak changes. By means of spectral angle mapping, matched filtering, spectral feature adaptive and other mapping methods, the Hymap data were classified, and the salinization degree indicator map was obtained. Quantitative mapping of carbon content, nitrogen content, clay content, soil pH, cation exchange capacity, and soil organic matter content was carried out on the hyperspectral data. For the first time, experimental spectral data measurement and physical and chemical analysis were carried out on representative soil samples collected in the field. Obtained Spectral information and related physical and chemical proper...

Claims

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Application Information

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IPC IPC(8): G01N21/25
Inventor 王国强方青青李嘉薇杨会彩张磊
Owner BEIJING NORMAL UNIVERSITY
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