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An Evaluation Method of Gully Head Activity Based on Information Entropy Theory

An evaluation method and activity technology, applied in electrical digital data processing, special data processing applications, instruments, etc., can solve the problems of inability to evaluate the activity of trench heads, lack of long-term erosion monitoring data, etc., to avoid weight distribution and trade-off problems , avoid subjective arbitrariness and improve the effect of accuracy

Inactive Publication Date: 2016-04-13
INST OF MOUNTAIN HAZARDS & ENVIRONMENT CHINESE ACADEMY OF SCI
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Problems solved by technology

[0005] In view of the lack of long-term erosion monitoring data and the inability to evaluate the activity of gully heads in most gully-developed areas at present, one of the purposes of the present invention is to provide a simple, quick and highly accurate gully head based on information entropy theory. Activity Evaluation Method

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  • An Evaluation Method of Gully Head Activity Based on Information Entropy Theory
  • An Evaluation Method of Gully Head Activity Based on Information Entropy Theory
  • An Evaluation Method of Gully Head Activity Based on Information Entropy Theory

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Embodiment Construction

[0027] Below in conjunction with example the present invention will be further described.

[0028] A method for evaluating the activity of gully heads based on information entropy theory can be realized through the following steps:

[0029] (1) Field measurement to obtain data of ditch head shape and ditch bed vegetation coverage data:

[0030] Using high-precision differential GPS (RTK-GPS) technology and slope gauges to conduct field surveys on gullies in dry-hot valleys in Yuanmou, and obtain morphological parameters such as the height difference of the ditch head and ridge, and the vertical gradient of the ditch bed; The vegetation coverage of the gully bed at each gully head was calculated. The data measured in the field are summarized as follows (see Table 1):

[0031] Table 1 Data of gully head shape and gully bed vegetation coverage measured in the field

[0032]

[0033] (2) Construct the original index data matrix: From Table 1, we can see that there are 10 gul...

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Abstract

The invention discloses a gully head liveness evaluation method based on an information entropy theory. The method comprises the steps of: carrying out outdoor on-site measurement and investigation on gully heads by using a high-precision differential global positioning system (GPS) technique, acquiring morphological parameter and gully bed vegetation coverage of each gully head, using the morphological parameter and the gully bed vegetation coverage as the evaluation index of the gully head to be evaluated, analyzing and processing the evaluation index by using the information entropy theory, and calculating the evaluation value of the gully heads so as to evaluate the liveness of the gully heads. The beneficial effect provided by the invention is that the gully head liveness evaluation method is simple and rapid and high in accuracy.

Description

technical field [0001] The present invention relates to a method for evaluating the activity of gully heads, and more specifically relates to a method for evaluating gully gullies by using the information entropy theory based on the investigation of the morphological characteristics of gully heads in the absence of field erosion monitoring data. A simple, quick and highly accurate method for determining the activity level of the head. Background technique [0002] The dry-hot valley of the Jinsha River is a special ecologically fragile area in Southwest my country, and gully erosion is one of its prominent ecological environmental problems. The development of gullies accelerates the process of land degradation and serious soil erosion. The erosion modulus can be as high as 1.64×10 in the gully-developed area of ​​the Yuanmou dry-hot valley in the lower reaches of the Jinsha River. 4 t / (km 2 • a). The head of the gully is the most violent part of gully shape change and er...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F19/00
Inventor 熊东红李佳佳董一帆苏正安杨丹
Owner INST OF MOUNTAIN HAZARDS & ENVIRONMENT CHINESE ACADEMY OF SCI
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