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Method for computing relation between interregional virtual water flows

A technology of water flow and region, applied in the field of water cycle simulation calculation, can solve problems such as inaccurate calculation, unclear relationship between virtual water flow, and difficulty in obtaining trade flow data, and achieve the effect of simple data and accurate calculation

Inactive Publication Date: 2014-05-28
CHINA INST OF WATER RESOURCES & HYDROPOWER RES
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Problems solved by technology

However, due to the difficulty in obtaining trade flow data and immature methods in the existing technology, the relationship between virtual water flow between regions is unclear and the calculation is inaccurate, so there is room for improvement

Method used

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  • Method for computing relation between interregional virtual water flows
  • Method for computing relation between interregional virtual water flows
  • Method for computing relation between interregional virtual water flows

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Embodiment Construction

[0030] The present invention will be further described below:

[0031] The present invention comprises the following steps:

[0032] (1) The whole country is divided into first-level districts, second-level districts and third-level districts according to geographical location, climatic conditions, agricultural production status, main production areas and consumption areas of agricultural products, and the first-level districts include multiple second-level districts , each of the secondary regions includes a plurality of the tertiary regions;

[0033] (2) Divide agricultural products into six categories: grain, vegetables, fruits, meat, poultry eggs, and dairy products, with yield as the weight, and convert the virtual water content of regional representative agricultural products into virtual water content of different types of agricultural products in the region through weighted average content;

[0034] (3) The net import of a certain type of agricultural product in a re...

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Abstract

The invention discloses a method for computing relation between interregional virtual water flows. The method comprises the following steps: firstly, dividing the whole of China into a first-level zone, second-level zones and third-level zones according to geographical locations, climate conditions, agricultural production statuses, agricultural product major production areas and consumption areas; dividing agricultural products into six categories: food, vegetables, fruits, meat, eggs and dairy products, and converting the virtual water content of regional representative agricultural products into the virtual water content of the regional agricultural products of different categories by taking yield as a weight through weighted average; then, computing the net input amount of certain agricultural products of one of regions, and distributing regional flow directions of trade of the agricultural products; finally, multiplying interregional flow direction data of inter-zone physical trade of the agricultural products by the corresponding virtual water content to obtain the interregional virtual water flows. The method disclosed by the invention has the advantages that the data can be simple to acquire; the relation between all the interregional virtual water flows can be clearly known; moreover, the method is comparatively accurate in computing and has value of promotion and use.

Description

technical field [0001] The invention relates to a water cycle simulation calculation method, in particular to a method for calculating the virtual water flow relationship between regions. Background technique [0002] There is a complex relationship between water resources and social and economic development, which is interrelated, restricts and promotes each other. Among them, the virtual flow relationship between water resources and the exchange of goods between regions is one of the closest and most important interactive relationships between water and socio-economic systems. However, due to the difficulty in obtaining trade flow data and immature methods in the existing technology, the relationship between virtual water flow between regions is unclear and the calculation is inaccurate, so there is room for improvement. Contents of the invention [0003] The object of the present invention is to provide a method for calculating the virtual water flow relationship betwe...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F19/00
Inventor 马静王浩汪党献陈敏建陈涛
Owner CHINA INST OF WATER RESOURCES & HYDROPOWER RES
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