Research method based on GAMLSS model sediment transport contribution rate

A technology of contribution rate and sediment transport, applied in the research field of sediment transport contribution rate based on GAMLSS model, can solve the problem of inability to accurately calculate the contribution rate of sediment transport change, and achieve the effect of eliminating the influence of multicollinearity and preventing interaction.

Active Publication Date: 2018-11-23
XIAN UNIV OF TECH
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Problems solved by technology

[0003] The purpose of the present invention is to provide a research method based on the contribution rate of sediment transport based on the GAMLSS model, which solves the problem that the existing contribution rate calculation technolog

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  • Research method based on GAMLSS model sediment transport contribution rate
  • Research method based on GAMLSS model sediment transport contribution rate
  • Research method based on GAMLSS model sediment transport contribution rate

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[0039] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0040] The present invention is based on the research method of GAMLSS model sediment transport contribution rate, such as figure 1 As shown, the specific operation process includes the following steps:

[0041] Step 1. Collect and organize the water and sediment data at the outlet station of the watershed, as well as the precipitation of the entire watershed, potential evaporation, cumulative dam control area, cumulative horizontal terrace area, cumulative forest area, and cumulative grass planting area;

[0042] Step 2. Calculate the relationship between six indicators and sediment transport and the fitting process line in step 1, and calculate 90% of P-factor and R-factor, 50% quantile sequence variance and mean, correlation coefficient and AIC;

[0043] Step 3. Use the attribution analysis method to analyze the six indicators to obtain t...

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Abstract

The invention discloses a research method based on a GAMLSS model sediment transport contribution rate. The method comprises the steps of firstly collecting and arranging flow and sediment informationof a drainage basin outlet station; then computing a relation between each index and sediment transport and a fitting process line, computing 90% P-factor and R-factor, 50% quantile sequence varianceand a mean value, a correlation coefficient and an AIC; then using an attribution analysis method to analyze six indexes, thus acquiring an influence degree of each index on sediment transport variation; and at last, computing a contribution rate of each index to sediment transport. According to the research method based on the GAMLSS model sediment transport contribution rate provided by the invention, the problem that the prior art cannot accurately and comprehensively acquire the influence degree of the climate change and the human activities on the sediment transport contribution rate issolved, the principal component regression analysis is used, the influence of multicollinearity is eliminated, the influence generated by each variable mean is considered, and the influence of each variable interannual variance change on sediment transport is also considered.

Description

technical field [0001] The invention belongs to the technical field of hydrology and water resources, and relates to a research method for the contribution rate of sediment transport based on the GAMLSS model. Background technique [0002] In recent decades, the climate has changed significantly, the global temperature has risen, the precipitation pattern has changed, the precipitation has increased, El Nino, drought and floods and other extreme weather have increased, icebergs, perennial snow melting and the impact of human activities have caused geological and landforms to suffer. Destruction, exacerbated soil erosion and sediment loss. The change of water and sediment is one of the major issues of general concern in the world today. The change of water and sediment is not only affected by climate change, but also human activities such as land use are the main reasons for the change of water and sediment. The impact of human activities includes: construction of water cons...

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Application Information

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IPC IPC(8): G06Q10/04
CPCG06Q10/04Y02A90/10
Inventor 于坤霞孙倩李占斌李鹏王添任宗萍王飞超马田田白璐璐刘昱
Owner XIAN UNIV OF TECH
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