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Animal husbandry drought loss dynamic assessment method

A dynamic assessment and drought disaster technology, applied in the direction of instruments, data processing applications, forecasting, etc., can solve problems such as differences in drought assessment results, lack of a unified drought assessment framework and standards, and achieve good applicability, high precision and sensitivity.

Inactive Publication Date: 2019-07-12
CHINA INST OF WATER RESOURCES & HYDROPOWER RES
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Problems solved by technology

Although there are many ways to assess the impact of drought on the ecosystem, there is still a lack of a unified assessment framework and standards for the impact of drought on the ecosystem. Different research purposes or standards lead to large differences in the results of drought assessment.

Method used

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  • Animal husbandry drought loss dynamic assessment method
  • Animal husbandry drought loss dynamic assessment method
  • Animal husbandry drought loss dynamic assessment method

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Embodiment Construction

[0034] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

[0035] The technical scheme of the present invention is based on the Biome-BGC model and the standardized precipitation index (SPI), and adopts the multi-year average method of normal annual forage yield to quantitatively evaluate the impact of different grades of drought on the forage yield of different grassland type ecosystems. Prepare the meteorological data (including normal years and drought years), CO required for the Biome-BGC mod...

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Abstract

The invention discloses an animal husbandry drought loss dynamic assessment method, which comprises the following steps: collecting data and preprocessing the data to drive an ecosystem model and calibrate the ecosystem model; calculating a standard rainfall index, and performing drought identification by using the standard rainfall index; calculating a difference value between the average herbageyield of the normal year and the average herbage yield of the drought year, and evaluating the influence of drought events of different grades on the herbage yield; evaluating the influence of drought on the animal carrying capacity through quantitative conversion and equivalent replacement of the pasture-animal carrying capacity, calculating the number of lost sheep units, and evaluating the economic loss value of a drought disaster according to the price of the sheep units; and constructing a drought loss assessment dynamic model and carrying out dynamic assessment on the drought loss. Byadopting the technical scheme of the invention, the influence of the drought on the grassland productivity can be accurately evaluated, the method has higher precision, sensitivity and applicability,and the animal husbandry economic loss caused by the drought can be quickly evaluated.

Description

Technical field [0001] The invention relates to the technical field of disaster loss assessment, in particular to a method for assessing drought losses in animal husbandry. Background technique [0002] Water is the most active element in the ecosystem, and many physiological and chemical reactions such as photosynthesis are inseparable from it. Global change has strengthened the hydrological cycle process to a certain extent, and has further exacerbated the increase in the frequency of extreme weather events such as drought. Severe droughts in the United States, Canada, Africa, South America, Australia, China, India and other places often interact with El Niño. Associated. Globally, the frequency, duration and severity of droughts have increased substantially in recent decades, especially in arid and semi-arid regions. At the same time, drought has brought serious impact and damage to human society and ecosystems. Regional droughts often cause global impacts, and droughts hav...

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Application Information

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IPC IPC(8): G06Q10/04G06Q10/06G06Q50/02
CPCG06Q10/04G06Q10/06393G06Q50/02
Inventor 雷添杰秦景张炬冯杰李世灿常凊睿程慧宫阿都李爱丽李杨王嘉宝黄锦涛袁满李翔宇万金红汪洋刘中伟路威赵凌云
Owner CHINA INST OF WATER RESOURCES & HYDROPOWER RES
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