Testing method of field investigation and evaluation system of soil and water loss

Abstract

The testing method of the field investigation and evaluation system of soil and water loss comprises the following steps: 1. Testing map browsing function and switching layer function; 2, testing thatintegrity and efficiency of the query data; 3, testing whether that position display of the survey unit in the GPS position display module is accurate; 4, testing that accuracy of the overlapping ofthe national soil erosion factor, the modulus map layer, the erosion intensity map layer and the standard satellite map layer, and the processing degree of the tile-type display map layer; 5, correctly analyzing that geographic information and obtaining the query point or the query area from the map; 6, judging whether that preset value is set according to the correct model; 7, calculating that background value of the erosion modulus, judging whet the background value is consistent with the calculation result expected by the calculation model, and displaying whether the calculation result is correct to overlap with the map lay; Step 8: judging Whether the evaluation of soil erosion benefit based on the background value of erosion modulus accords with the calculation result of the calculation model.

Description

technical field [0001] The invention belongs to the technical field of field investigation of water and soil loss, and in particular relates to a test method of a field investigation and evaluation system of water and soil loss. Background technique [0002] Soil erosion refers to the process in which soil or soil parent material is destroyed, separated, transported and deposited under the action of external forces such as water and wind. Severe soil erosion not only causes the degradation of land resources that humans rely on for survival and is increasingly scarce, but also causes erosion of sediment. The siltation of rivers, lakes, canals and reservoirs increases the risk of flooding and pollutes water bodies due to the adsorption of a large amount of chemical fertilizer residues into the river network. At present, soil erosion has become the number one environmental problem in our country. Only by finding out the distribution, area and intensity of soil erosion in a cer...

AI Technical Summary

Problems solved by technology

Although the application of these methods has solved the shortcomings of low precision and inability to quantify in remote sensing surveys, it has also increased a large number of work links

The main work links can be summarized into five parts: pre-preparation, data preparation, field investigation, data processing and reporting, and evaluation of soil erosion status. Therefore, a large amount of indoor data preparation, processing, analysis and calculation work is required in the early and late stages to obtain the survey results. The state of soil loss in the region also means that investigators cannot directly obtain quantitative calculation results and spatial results during field investigations, which affects the efficiency of investigations

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