Method for evaluating dependence degree of city on external water resources

A technology of water resources and external water, applied in the field of water resources management, to achieve clear dependence, strong promotion and application value, and simple data acquisition

Active Publication Date: 2020-09-22
HOHAI UNIV
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  • Application Information

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At present, there is a lack of methods in the existing technology that c

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  • Method for evaluating dependence degree of city on external water resources
  • Method for evaluating dependence degree of city on external water resources
  • Method for evaluating dependence degree of city on external water resources

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[0031] The present invention will be further described below in conjunction with specific embodiments. The following examples are only used to illustrate the technical solution of the present invention more clearly, but not to limit the protection scope of the present invention.

[0032] A method for evaluating a city's dependence on external water resources, including: obtaining the water consumption of each economic sector in the city, and determining the external water footprint, total virtual water export volume, and virtual total water import volume of each economic sector in the city based on an input-output model ; Obtain the city's domestic water consumption, and determine the city's water "siphon" according to the external water footprint of each economic department in the city; The total import volume of virtual water is used to determine the export value intensity and import value intensity of the city; according to the export value intensity and import value intens...

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Abstract

The invention discloses a method for evaluating the dependence degree of a city on external water resources in the technical field of water resource management. The method comprises the following steps of: according to the water consumption of each economic department of a city, determining the external water footprint, the total virtual water outlet amount and the total virtual water inlet amountof each economic department of the city; obtaining urban life water consumption and external water footprints of all the economic departments of the city, and determining the water quantity siphon ofthe city; obtaining the total product outlet amount and the total product inlet amount of the city and the total virtual water outlet amount and the total virtual water inlet amount of each economicdepartment of the city, and determining the outlet value strength and the inlet value strength of the city; determining the water productivity siphon of the city according to the export value strengthand the import value strength of the city; and evaluating the dependence degree of the city on external water resources according to the water quantity siphon and the water productivity siphon of thecity. The method is simple in data acquisition, can accurately evaluate the dependence degree of cities on external water resources, and provides reliable data support for water resource management of cities.

Description

technical field [0001] The invention belongs to the technical field of water resources management, and in particular relates to a method for evaluating the city's dependence on external water resources. Background technique [0002] Previous studies mostly regarded water resource shortage as a local water resource management problem, while virtual water research emphasized the important impact of external consumption and trade factors on local water resources. For example, cities can meet local final consumption needs by importing more virtual water instead of using local water resources. Although relying on virtual water imports can alleviate the water supply pressure of the urban water resource network to a certain extent, there are certain risks. Through economic activities, cities can make the external water footprint supply exceed the local physical water supply through the "siphon" effect (the city's economic strength determines that it can purchase a large amount of ...

Claims

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Application Information

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IPC IPC(8): G06Q10/06G06Q50/06G06F17/16
CPCG06Q10/06315G06Q10/0635G06Q50/06G06F17/16Y02A20/152
Inventor 张信信赵旭侯思雨
Owner HOHAI UNIV
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