Three-layer risk assessment-based drought disaster risk coping method

A technology of risk assessment and response method, applied in the field of drought disaster risk response based on three-layer risk assessment, which can solve problems such as difficult to reflect the multiple and complex characteristics of drought disasters

Inactive Publication Date: 2016-09-07
CHINA INST OF WATER RESOURCES & HYDROPOWER RES
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Problems solved by technology

However, with the intensification of climate change and the impact of human activities, the water cycle process presents an obvious “natural-artificial” dual driving characteristic. The construction of water conservancy pr...

Method used

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  • Three-layer risk assessment-based drought disaster risk coping method
  • Three-layer risk assessment-based drought disaster risk coping method
  • Three-layer risk assessment-based drought disaster risk coping method

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Experimental program
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Embodiment

[0035] Embodiment: A drought disaster risk response method based on three-tier risk assessment, selecting the Huanghuaihai area where drought disasters occur frequently for empirical research, the method steps are as follows,

[0036] (1) Analysis of the adjustable characteristics and regulatory approaches of drought disaster risk factors

[0037] Drought disaster risk factors involve four levels in the formation process of drought disasters: risk, exposure, vulnerability, and disaster prevention and mitigation capabilities. Risks include precipitation (growing season precipitation, frequency of drought), topography, slope, river network density, water conservation, etc. Most of these factors are natural attribute factors of the watershed, and most of them are uncontrollable factors. Only some factors are to a certain extent It can be regulated through engineering measures, such as water and soil conservation, returning farmland to forests and grasslands, and building water co...

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Abstract

The invention discloses a three-layer risk assessment drought disaster risk coping method. The method includes the following steps that: regulatable feature and regulation approach analysis is performed on drought disaster risk factors from the four aspects of dangerousness, exposure degree, vulnerability and disaster prevention and mitigation capability involved in a drought formation process; a drought disaster one-layer risk assessment system is established; a drought disaster two-layer risk assessment system is established; a drought disaster three-layer risk assessment system is established; and drought risk coping strategies are put forward. Based on historical evolution rules and future evolution trends of drought disasters, the drought disaster risk coping method is established according to drought disaster risk region division and risk prediction results from aspects such as urban population size, regional water resource carrying capacity, industrial structure adjustment, water conservancy project group optimized layout, disaster prevention and mitigation capacity construction, soil and water resource regulation and risk prevention and control management. With the method adopted, regional drought risks can be lowered level by level.

Description

technical field [0001] The invention relates to the field of drought disaster risk response, in particular to a drought disaster risk response method based on three-layer risk assessment. 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 mid...

Claims

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Application Information

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IPC IPC(8): G06Q10/06
CPCG06Q10/0635Y02A10/40Y04S10/50
Inventor 严登华翁白莎王浩袁喆刘少华
Owner CHINA INST OF WATER RESOURCES & HYDROPOWER RES
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