Water resource drought evaluation system

A technology for evaluating systems and water resources, applied in special data processing applications, instruments, electrical and digital data processing, etc. question

Inactive Publication Date: 2016-05-25
CHINA INST OF WATER RESOURCES & HYDROPOWER RES
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] The main disadvantage of these methods is that the evaluation is based on a single or several links of the water cycle, which splits the integrity of the water cycle,...

Method used

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Experimental program
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Embodiment

[0072] Embodiment A water resource drought evaluation system, based on the "natural-artificial" binary water cycle process in the watershed, according to the meteorological and hydrological data and water consumption data in the watershed, using the watershed binary water cycle model to realize water supply under different scenarios for different evaluation units Simulate the water supply and demand in order to clarify the water supply and demand in the basin. The drought evaluation index value established based on the water resources system is affected by two factors: the drought situation at the previous moment and the water resource shortage at the current moment. Therefore, the drought evaluation index is a function of the above two factors.

[0073] The Dongliao River Basin, where drought events occur frequently, is selected for empirical research. The specific steps are as follows:

[0074] (1) Calculation of generalized water supply

[0075] The generalized water suppl...

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Abstract

The invention discloses a water resource drought evaluation system. A method comprises the following steps: calculating a generalized water supply amount; calculating a generalized water demand amount; constructing a drought evaluation index based on a water resource system; and verifying the index: comparing the calculated drought evaluation index value with the actual drought condition of a typical session to verify the reasonability of the index. Compared with the prior art, the drought evaluation index is constructed from the perspective of the water resource system, so that the problem in drought evaluation for a long term is solved, the unified evaluation of meteorologic, hydrologic, agricultural and socioeconomic droughts is realized, and the characteristics of a drought event are scientifically and comprehensively reflected. The system is widely applied to the drought evaluation of a river basin or a region greatly influenced by human activities and especially suitable for the quantitative drought evaluation of the East Liaohe River basin.

Description

technical field [0001] The invention relates to the technical field of drought monitoring, in particular to a water resource drought evaluation system. Background technique [0002] Under the influence of climate change and human activities, droughts around the world generally present a trend of frequent, frequent, continuous and concurrent. Since 1900, global drought disasters have killed more than 11 million people and affected more than 2 billion people. In the past 50 years, my country's meteorological disaster losses accounted for 61% of all natural disaster losses, while drought disaster losses accounted for 55% of meteorological disaster losses. Droughts not only occur in the northern regions where water resources are relatively scarce, but also frequently occur in the southern regions where water resources are relatively abundant. In recent years, large-scale and long-term drought events have occurred in the southwest and the middle and lower reaches of the Yangtze...

Claims

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Application Information

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IPC IPC(8): G06F19/00
CPCG16Z99/00
Inventor 翁白莎严登华王浩刘家宏杨志勇邵薇薇冯杰刘行刚于赢东刘鑫鑫
Owner CHINA INST OF WATER RESOURCES & HYDROPOWER RES
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