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Disaster warning method and system based on hydrological connected structure index

A structural index, hydrological connectivity technology, applied in the field of watershed management, can solve problems such as effective disaster warning for difficult hydrologically connected structures

Inactive Publication Date: 2019-02-15
BEIJING FORESTRY UNIVERSITY
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  • Claims
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Problems solved by technology

[0005] In order to overcome the lack of methods for quantifying the hydrological connectivity structure in the prior art, which makes it difficult to carry out effective disaster early warning based on the hydrological connectivity structure of the watershed, the present invention provides a disaster early warning method and system based on the hydrological connectivity structure index

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  • Disaster warning method and system based on hydrological connected structure index
  • Disaster warning method and system based on hydrological connected structure index
  • Disaster warning method and system based on hydrological connected structure index

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Embodiment Construction

[0042] The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0043] It should be noted that among the various hydrological elements related to runoff, the temporal and spatial distribution of soil water content is a crucial decisive factor, which largely affects key factors such as infiltration capacity and runoff. Therefore, the present invention quantifies the hydrological connectivity structure based on the spatiotemporal distribution of soil water content, obtains the hydrological connectivity structure index, and performs disaster warning based on the hydrological connectivity structure index.

[0044] figure 1 It is a schematic diagram of the overall flow of a disaster early warning method based on a hydrological connectivity...

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Abstract

The invention provides a disaster warning method and system based on a hydrological connected structure index. The method comprises: dividing a target region into a plurality of grid regions, and obtaining a relative volumetric moisture content corresponding to each grid region by measuring the volumetric moisture content of the surface soil of each grid region and the non-capillary porosity; obtaining at least one connected region according to the relative volumetric moisture content corresponding to each grid region, and calculating a ratio of a total area of all connected regions to a totalarea of the target region as a first target index; adding the distance between each two grid regions in the connected region for any connected region, and obtaining the total distance corresponding to the connected region, and adding the total distance corresponding to all connected regions to obtain a second target index; performing disaster warning for the target area according to the first target index and the second target index. The method and system can quantify the hydrological connectivity structure, thereby accurately warning the disaster based on the hydrological connectivity structure index.

Description

technical field [0001] The invention relates to the technical field of watershed management, and more specifically, to a disaster early warning method and system based on a hydrological connectivity structure index. Background technique [0002] Hydrological connectivity is a new concept and new method of hydrological research, which is a description of water or the material flow and energy cycle process with water as the medium. The hydrological connectivity structure refers to the connection structure of multiple spatial units related to water or water-based material migration and energy flow, which is useful for explaining the response of runoff to rainfall, as well as the soil erosion and nutrition caused by runoff. Element loss and pollutant transport are of great significance to hydrological processes. [0003] However, in practical applications, the hydrological connectivity structure has not been included in the monitoring system because of the lack of a mature and ...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G08B21/10
CPCG08B21/10
Inventor 张明祥刘佳凯张振明马梓文张英虎代立熠
Owner BEIJING FORESTRY UNIVERSITY
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