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Virtual water change factor decomposition new technology based on input-output analysis

A technology of changing factors and production technology, applied in the field of water resources calculation, can solve problems such as inability to achieve complete decomposition and large errors, and achieve complete decomposition, high decomposition accuracy, and good comprehensive benefits

Inactive Publication Date: 2018-02-09
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Problems solved by technology

[0009] In order to overcome the defects in the prior art that the cross items in the decomposition of virtual water change factors are directly discarded, complete decomposition cannot be achieved, and there are large errors, the present invention provides a uniquely designed, easy to use, complete decomposition and high accuracy Using a new type of complete decomposition method based on input-output analysis of virtual water change factor decomposition technology to complete the decomposition of virtual water change factors

Method used

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  • Virtual water change factor decomposition new technology based on input-output analysis
  • Virtual water change factor decomposition new technology based on input-output analysis
  • Virtual water change factor decomposition new technology based on input-output analysis

Examples

Experimental program
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Embodiment 1

[0021] [Example 1: Calculation of changes in China's virtual water exports from 2002 to 2012]

[0022] 1. First check the 2002 and 2012 "China Input-Output Table" to get the direct consumption coefficient matrix A of each industry 0 , A 1 , total export value m 0 , m 1 And the total output of each industry department; check the 2002 and 2012 "China Water Resources Bulletin" to get the water consumption of each department, divide the water consumption of each department by the total output of each department and write the result in the form of a row vector, and get the direct water use coefficient row vector t 0 , t 1 .

[0023] 2. Calculate the complete demand coefficient matrix, B 1 =[I-A 1 ] -1 , B 0 =[I-A 0 ] -1 , that is, subtract the direct consumption coefficient matrix A from the identity matrix 1 、A 0 , the inverse matrix of the result is B 1 , B 0 .

[0024] 3. Find B separately 1 , B 0 ;m 1 , m 0 ;t 1 , t 0 The difference ΔB, Δm, Δt.

[0025] 4...

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Abstract

The invention discloses a virtual water change factor decomposition new technology based on input-output analysis. Virtual water change is completely decomposed into virtual water change T ([Delta]t)caused by the change of a production technology, virtual water change T ([Delta]B) caused by industrial structure adjustment and virtual water change T ([Delta]m) caused by the change of production scale. By use of the technology, the influence (contribution rate) of each factor, including the production technology and the industrial structure for the change of the virtual water can be completelydecomposed and quantificationally explained, error items are avoided, and accuracy is high. By use of the technology, the defects of an existing virtual water change factor decomposition technology based on the input-output analysis that a cross term is directly omitted, complete decomposition can not be realized and a high error is in the presence are avoided.

Description

technical field [0001] The invention relates to a water resource calculation technology, in particular to a novel technology for decomposing virtual water change factors based on input-output analysis. Background technique [0002] “Virtual water” refers to the water resources consumed to produce products and services. The concept of virtual water provides an effective way to identify the responsibility of water use, which has a great impact on global trade policy, and the research on virtual water has been paid more and more attention. Decomposing the factors of virtual water changes based on input-output analysis can quantitatively explain the influence (contribution rate) of various factors such as production technology, industrial structure, and production scale on virtual water changes. Individual factors are separated from the overall change, prompting people to improve water use strategy and management of water resources in a targeted manner, and improve the utilizat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F19/00G06Q50/06
CPCG06Q50/06G16Z99/00
Inventor 支援
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