Farmland soil year wind erosion amount estimation method

A soil and farmland technology, applied in the field of farmland soil annual wind erosion estimation, can solve the problem of inability to accurately and quantitatively estimate farmland soil annual wind erosion, and achieve the effect of simple and practical operation and wide application range.

Active Publication Date: 2013-12-18
河北省科学院地理科学研究所
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Problems solved by technology

[0006] The purpose of the present invention is to provide a method for estimating the annual wind erosion of farmland soil to so

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  • Farmland soil year wind erosion amount estimation method
  • Farmland soil year wind erosion amount estimation method
  • Farmland soil year wind erosion amount estimation method

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Embodiment Construction

[0029] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0030] The technical solution provided in this specific embodiment is realized under the premise that the following assumptions are established:

[0031] (1) In the grain composition of the plow layer of farmland soil, there are both erodible particles and non-erodible particles;

[0032] (2) Before the start of the wind erosion season, the vertical change of soil particle size composition in the plow layer can be ignored;

[0033] (3) Wind erosion of farmland mainly occurs during the period from the harvest of autumn crops of the current year to the sowing of crops in spring of the following year;

[0034] (4) Compared with the process of wind erosion, other factors causing the change of surface grain distribution can be neglected.

[0035] For the above assumptions (1), (2), and (3): For the vast majority of farmland in arid and semi-arid a...

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Abstract

The invention discloses a farmland soil year wind erosion amount estimation method. The method comprises the following steps that plough layer surface layer soil and plough layer lower layer soil are respectively collected, dry sieving analysis is carried out to detect the content of erosive particles and non-erosive particles in the surface layer soil and the lower layer soil, and the content is substituted to a formula for calculation to obtain soil year wind erosion amount. According to the method, the difference of the content of erosive particles between the surface layer soil and the lower layer soil is used for estimating the current soil year wind erosion amount, and the problem which demands prompt solution in the soil wind erosion research is solved. The method is simple, practical, and quick in operation and convenient to operate, samples of the plough layer surface layer soil and the lower layer soil only need to be collected for analysis and calculation after the wind erosion season in spring is over, and the year wind erosion amount of farmland can be obtained. The method is wide in application range and can be applied to estimation of year wind erosion amount of almost all wind erosion farmlands.

Description

technical field [0001] The invention relates to a method for estimating wind erosion of farmland soil, in particular to a method for estimating annual wind erosion of farmland soil. technical background [0002] Soil wind erosion refers to the process of erosion, sorting, and transportation of soil and its parent material under the action of wind. It includes the process of surface soil particles being blown up and transported by the wind, and the abrasion process in which the blown particles hit the surface soil and are broken. The harm is mainly manifested in two aspects: one is that soil particulate matter is transported, causing soil loss, causing desertification of farmland, and reducing land productivity; , affect the atmospheric environment, and make the atmospheric particulate matter seriously exceed the standard. An important indicator for judging the intensity of soil wind erosion and the degree of desertification is the amount of wind erosion, which has been wide...

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Application Information

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IPC IPC(8): G01M9/00
Inventor 王仁德
Owner 河北省科学院地理科学研究所
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