Method for evaluating the degree of sheet erosion of a ploughed soil
By collecting and processing soil samples from the top and bottom layers of cultivated land, and calculating the gravel mass ratio and soil loss rate, the problem of inaccurate soil erosion assessment in existing technologies has been solved, and precise quantification of soil and water loss has been achieved.
CN117268983BActive Publication Date: 2026-06-23NORTHWEST A & F UNIV
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- NORTHWEST A & F UNIV
- Filing Date
- 2023-09-25
- Publication Date
- 2026-06-23
AI Technical Summary
Technical Problem
Existing technologies are inaccurate in assessing the extent of soil erosion in arable land after heavy rains, especially in areas without runoff and sediment monitoring facilities, making it difficult to quantify soil erosion.
Method used
By collecting soil samples from the top and bottom layers of cultivated land, calculating the gravel mass ratio and soil loss rate, processing soil samples using ring cutters and sieves, and combining soil bulk density and area to calculate the soil loss rate, the degree of soil erosion was evaluated.
Benefits of technology
It enables quantitative assessment of widespread sheet erosion, improving the accuracy of soil erosion measurement with an error within 3%.
✦ Generated by Eureka AI based on patent content.
Smart Images
Figure CN117268983B_ABST
Abstract
The application discloses a kind of cultivated soil sheet erosion degree evaluation method, it is related to soil erosion measurement technical field.The surface soil represents the soil after rainstorm erosion, the lower layer soil represents the soil before rainstorm erosion;Collect the soil sample of surface soil and lower layer soil;The gravel that cannot pass through sieve and the soil that can pass through sieve are weighed respectively;According to the average value P1 of gravel mass ratio in surface soil sample and the average value P2 of gravel mass ratio in lower layer soil sample, calculate the surface soil loss ratio P Δ With soil loss rate SE, according to soil loss rate SE evaluation soil sheet erosion degree.The application is based on the characteristics that the particle composition of cultivated soil is similar, and the gravel in gravel-containing soil is difficult to be eroded and transported by runoff, and the soil sheet erosion degree is evaluated by calculating the soil loss rate SE, so that the widely occurring sheet erosion can be quantified, and the regional soil and water loss evaluation is more accurate.
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