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Method for comprehensively assessing influences, on river runoffs, of human activities and climatic changes

A technology of human activities and climate change, applied in the field of water resources engineering, which can solve the problems of high uncertainty of evaluation results and single evaluation.

Pending Publication Date: 2018-06-08
CHINA INST OF WATER RESOURCES & HYDROPOWER RES
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Problems solved by technology

[0004] The present invention aims at the problems in the prior art that the evaluation of the impact of climate change and human activities on river runoff is single and the evaluation results are highly uncertain, and proposes a comprehensive evaluation method for the impact of human activities and climate change on river runoff, which can effectively improve the evaluation objectivity and accuracy

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  • Method for comprehensively assessing influences, on river runoffs, of human activities and climatic changes
  • Method for comprehensively assessing influences, on river runoffs, of human activities and climatic changes
  • Method for comprehensively assessing influences, on river runoffs, of human activities and climatic changes

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Embodiment Construction

[0065] Embodiments of the invention are described in detail below, but the invention can be practiced in many different ways as defined and covered by the claims.

[0066] refer to figure 1 , this embodiment provides a method for comprehensive assessment of the impact of human activities and climate change on river runoff, including:

[0067] Step S101, collecting runoff data, temperature data and precipitation data in the watershed;

[0068] Step S102, according to the runoff data, air temperature data and precipitation data respectively establish runoff long series, air temperature long series and precipitation long series, and determine the mutation point of the runoff long series, air temperature long series and precipitation long series;

[0069] Step S103, dividing the period before the mutation point into a natural period, and dividing the period after the mutation point into an impact period;

[0070] Step S104, calculating the annual average runoff change caused by ...

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Abstract

The invention provides a method for comprehensively assessing influences, on river runoffs, of human activities and climatic changes. The method comprises the following steps of: acquiring runoff data, temperature data and rainfall data in a drainage basin; respectively establishing a runoff long sequence, a temperature long sequence and a rainfall long sequence according to the runoff data, the temperature data and the rainfall data, and determining mutational points of the runoff long sequence, the temperature long sequence and the rainfall long sequence; taking a period before the mutational points as a natural periods and taking a period after the mutational points as an influence period; calculating an annual mean runoff change amount caused by climatic changes and an annual mean runoff change amount caused by human activities through a hydrological model method and an elastic coefficient method; and calculating influences, on the runoff change, of the human activities and the climatic changes according to the annual mean runoff change amount caused by the climatic changes and the annual mean runoff change amount caused by the human activities. The method is capable of effectively improving the evaluation objectivity and correctness.

Description

technical field [0001] The invention relates to the technical field of water resources engineering, in particular to a method for comprehensively evaluating the influence of human activities and climate change on river runoff. Background technique [0002] In recent years, environmental change and water resources evolution have become the focus of global water science research. Climate change and human activities are important components of environmental change, and their impact on hydrological processes is a widespread concern at home and abroad. The watershed water cycle is a complex process influenced by many factors including climate change and human activities, both of which are important drivers. Spatiotemporal changes in precipitation and the impact of human activities on land cover will lead to changes in the natural water cycle, which will change the original relationship between rainfall and runoff. In addition, the impacts of climate change and human activities ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06Q10/06G06Q50/26
CPCG06Q10/0637G06Q50/26Y02A10/40
Inventor 肖伟华黄亚王浩王贺佳李保琦侯保灯周毓彦
Owner CHINA INST OF WATER RESOURCES & HYDROPOWER RES
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