Method for assessing water shortage risk, device, computer device and storage medium

Patent metadata

Field	Value
Publication number	US-11531017-B2
Application number	US-202016937554-A
Country	US
Kind code	B2
Filing date	Jul 23, 2020
Priority date	May 24, 2019
Publication date	Dec 20, 2022
Grant date	Dec 20, 2022

Abstract

In the present application, a method for assessing water shortage risk, device, computer device and storage medium are provided, wherein the method for assessing water shortage risk comprises: acquiring a volume of blue water flowing into soil of a to-be-assessed-area within a target time period, and a volume of retention water flowing into and retained in the soil of the to-be-assessed-area within the target time period; and determining a water shortage risk indicator of the to-be-assessed-area indicating a degree of water shortage risk of the to-be-assessed-area, according to a ratio of the volume of blue water to the volume of retention water. A higher ratio of the volume of blue water to the volume of retention water indicates poor ability of the soil's water to meet the demand for use and greater degree of the water shortage risk of the soil.

First claim

What is claimed is:

1. A method for assessing water shortage risk, comprising:
acquiring a volume of blue water flowing into soil of a to-be-assessed-area within a target time period, and a volume of retention water flowing into and retained in the soil of the to-be-assessed-area within the target time period; and
determining a water shortage risk indicator of the to-be-assessed-area indicating a degree of water shortage risk of the to-be-assessed-area, according to a ratio of the volume of blue water to the volume of retention water.

2. The method of claim 1 , wherein, determining a water shortage risk indicator of the to-be-assessed-area according to a ratio of the volume of blue water to the volume of retention water comprises:
matching the ratio of the volume of blue water to the volume of retention water with a first mapping relation, which comprises corresponding relation of different ratio ranges with the water shortage risk indicator, to determine the water shortage risk indicator in the to-be-assessed-area.

3. The method of claim 1 , wherein determining a water shortage risk indicator of the to-be-assessed-area according to a ratio of the volume of blue water to the volume of retention water comprises:
matching an average per capita water resource in the to-be-assessed-area within the target time period with a second mapping relation, which comprises corresponding relation of different ranges of the average per capita water resource with each risk level value, to determine a first risk level value of the to-be-assessed-area;
matching the ratio of the volume of blue water to the volume of retention water with a third mapping relation, which comprises corresponding relation of different ratio ranges with each risk level value, to determine a second risk level value of the to-be-assessed-area;
calculating a weighted sum of the first risk level value and the second risk level value, to obtain a third risk level value; and
matching the third risk level value with a fourth mapping relation, which comprises corresponding relation of different ranges of the risk level value with each water shortage risk indicator, to determine the water shortage risk indicator of the to-be-assessed-area.

4. The method of claim 3 , before calculating a weighted sum of the first risk level value and the second risk level value to obtain a third risk level value, further comprising:
determining a weight Y of the first risk level value using a weight formula Y=aX+b, wherein X represents a total volume of blue water resource in the to-be-assessed-area, a represents slope, b represents intercept; and
taking an absolute value of a difference between a weight of the first risk level value and 1 as a weight of the second risk level value.

5. The method of claim 1 , wherein determining a water shortage risk indicator of the to-be-assessed-area according to a ratio of the volume of blue water to the volume of retention water comprises:
taking the ratio of the volume of blue water to the volume of retention water as the water shortage risk indicator of the to-be-assessed-area.

6. The method of claim 1 , wherein acquiring a volume of blue water flowing into soil of a to-be-assessed-area within a target time period, and a volume of retention water flowing into and retained in the soil of the to-be-assessed-area within the target time period comprises:
performing ecological hydrological simulation with an ecological hydrological model, to obtain a simulation result comprising the volume of blue water, a volume of outflow water flowing out of soil in the to-be-assessed-area and a volume of vegetation retention water within the target time period; and
obtaining the volume of retention water according to precipitation, the volume of vegetation retention water, the volume of blue water and the volume of outflow water within the target time period.

7. The method of claim 2 , wherein acquiring a volume of blue water flowing into soil of a to-be-assessed-area within a target time period, and a volume of retention water flowing into and retained in the soil of the to-be-assessed-area within the target time period comprises:
performing ecological hydrological simulation with an ecological hydrological model, to obtain a simulation result comprising the volume of blue water, a volume of outflow water flowing out of soil in the to-be-assessed-area and a volume of vegetation retention water within the target time period; and
obtaining the volume of retention water according to precipitation, the volume of vegetation retention water, the volume of blue water and the volume of outflow water within the target time period.

8. The method of claim 3 , wherein acquiring a volume of blue water flowing into soil of a to-be-assessed-area within a target time period, and a volume of retention water flowing into and retained in the soil of the to-be-assessed-area within the target time period comprises:
performing ecological hydrological simulation with an ecological hydrological model, to obtain a simulation result comprising the volume of blue water, a volume of outflow water flowing out of soil in the to-be-assessed-area and a volume of vegetation retention water within the target time period; and
obtaining the volume of retention water according to precipitation, the volume of vegetation retention water, the volume of blue water and the volume of outflow water within the target time period.

9. The method of claim 4 , wherein acquiring a volume of blue water flowing into soil of a to-be-assessed-area within a target time period, and a volume of retention water flowing into and retained in the soil of the to-be-assessed-area within the target time period comprises:
performing ecological hydrological simulation with an ecological hydrological model, to obtain a simulation result comprising the volume of blue water, a volume of outflow water flowing out of soil in the to-be-assessed-area and a volume of vegetation retention water within the target time period; and
obtaining the volume of retention water according to precipitation, the volume of vegetation retention water, the volume of blue water and the volume of outflow water within the target time period.

10. The method of claim 6 , wherein, the volume of blue water comprises: a volume of irrigation water, a volume of channel leakage and a volume of capillary water.

11. The method of claim 6 , wherein, the volume of outflow water comprises: a volume of surface runoff water, a volume of groundwater supplied and a volume of subsurface flow.

12. The method of claim 6 , wherein the target time period has multiple ones;
before determining a water shortage risk indicator of the to-be-assessed-area according to a ratio of the volume of blue water to the volume of retention water, the method further comprises:
taking an average of the volume of blue water corresponding to the multiple target time periods respectively, to obtain an average volume of blue water;
taking an average of the volume of retention water corresponding to the multiple target time periods respectively, to obtain an average volume of retention water; and
determining a water shortage risk indicator of the to-be-assessed-area according to a ratio of the volume of blue water to the volume of retention water comprises:
determining the water shortage risk indicator of the to-be-assessed-area according to a ratio of the average volume of blue water to the average volume of retention water.

13. A computer device, comprising memory storing computer programs and a processor, wherein, the processor, when executing the computer program, realizes the method for assessing water shortag

Assignees

• Univ Southern Sci & Tech

Inventors

• Liu Junguo
• Mao Ganquan

Classifications

• G06F30/20

  Design optimisation, verification or simulation (optimisation, verification or simulation of circuit designs G06F30/30) · CPC title

• G06Q10/0639

  Performance analysis of employees; Performance analysis of enterprise or organisation operations · CPC title

• E02B13/00

  Irrigation ditches, i.e. gravity flow, open channel water distribution systems ({retaining waterborne material in irrigation canals E02B5/085}; other distribution systems for watering or spraying gardens, fields, sports grounds, or the like, A01G25/00; {built-in irrigation means for sports grounds E01C13/083}) · CPC title

• G01N33/246 Primary

  for water content · CPC title

• A01G25/16

  Control of watering · CPC title