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A method for generating soil nutrient classification map based on 3s technology and its accuracy evaluation method

A soil nutrient and grade classification technology, applied in the field of remote sensing data analysis, can solve the problem of difficult to achieve the classification of soil nutrient grades in a large spatial range, and achieve the effects of expanding the scope of spatial monitoring, overcoming one-sidedness, and reducing workload and costs.

Active Publication Date: 2021-08-06
ANHUI UNIVERSITY +1
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Problems solved by technology

[0005] The purpose of the present invention is to solve the defect that it is difficult to realize the division of soil nutrient grades in a large space in the prior art, and to provide a method for generating soil nutrient grade classification maps based on 3S technology and its accuracy evaluation method to solve the above problems

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  • A method for generating soil nutrient classification map based on 3s technology and its accuracy evaluation method
  • A method for generating soil nutrient classification map based on 3s technology and its accuracy evaluation method
  • A method for generating soil nutrient classification map based on 3s technology and its accuracy evaluation method

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Embodiment Construction

[0068] In order to have a further understanding and understanding of the structural features of the present invention and the achieved effects, the preferred embodiments and accompanying drawings are used for a detailed description, as follows:

[0069] Such as figure 1 As shown, a kind of soil nutrient grade classification map generation method based on 3S technology of the present invention, comprises the following steps:

[0070] The first step is the generation of spatial raster map of soil nutrient data. Select the radial basis function RBF (Radial Basis Function) spatial difference method for spatial difference to generate a raster map of each nutrient. The specific steps are as follows:

[0071] (1) When collecting soil samples in the cultivated land, the longitude and latitude coordinates of the sampling points were obtained using a sub-meter-level high-precision handheld GPS, and imported into the ArcMap spatial analysis platform to generate point vector files in Sh...

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Abstract

The invention relates to a 3S technology-based method for generating a soil nutrient grade classification map and an accuracy evaluation method thereof. Compared with the prior art, the defect that it is difficult to realize the division of soil nutrient grades in a large space is solved. The invention comprises the following steps: generation of soil nutrient data space raster map; setting of soil nutrient grade classification map; cultivated land block extraction; generation of plot-scale soil nutrient class classification map. Based on 3S technology, the present invention uses GPS to obtain field sampling points and RS to extract cultivated land plots, comprehensively uses GIS spatial analysis and geostatistical functions to analyze the spatial distribution characteristics of soil nutrients at the plot scale, and realizes the , Soil nutrient classification, spatial mapping and accuracy evaluation at the field scale.

Description

technical field [0001] The invention relates to the technical field of remote sensing data analysis, in particular to a method for generating a soil nutrient classification map based on 3S technology and a method for evaluating its accuracy. Background technique [0002] Soil quality is an important criterion for determining the quality of cultivated land. The soil quality of arable land has important economic value in areas with rapid economic development, but it is greatly affected by the environment and shows the characteristics of variation. The current research on cultivated land has developed from focusing only on quantity to paying equal attention to quantity, quality and ecological benefits. On the premise of ensuring the quantity of cultivated land, how to improve the quality of cultivated land, especially the evaluation of its environmental quality, has become a hot research direction of cultivated land. The grading and grading of soil nutrients is of great signi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F16/29G06N3/08G06Q10/06
CPCG06N3/08G06Q10/0639
Inventor 赵晋陵董莹莹黄林生梁栋徐超张东彦阮莉敏翁士状
Owner ANHUI UNIVERSITY
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