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Method for designing distributed-type hydrographical model based on penetration-storage integrated dynamic runoff yield mechanism

A technology of distributed hydrology and design methods, which can be applied in computing, climate change adaptation, special data processing applications, etc., and can solve problems such as large differences in the description of outlet flow processes

Inactive Publication Date: 2012-04-18
NANJING UNIV
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  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Different confluence schemes have their own adaptability, which will produce different simulation results, and the process description of outlet flow is also quite different

Method used

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  • Method for designing distributed-type hydrographical model based on penetration-storage integrated dynamic runoff yield mechanism
  • Method for designing distributed-type hydrographical model based on penetration-storage integrated dynamic runoff yield mechanism
  • Method for designing distributed-type hydrographical model based on penetration-storage integrated dynamic runoff yield mechanism

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0189] Simulation and accuracy evaluation of hydrological process in warm and wet areas.

[0190] 1. Overview of the study area

[0191] The research area is selected in the left tributary of the upper reaches of the Han River—the river mouth basin in the upper reaches of the Bao River, with a catchment area of ​​about 2413km 2 , longitude 106°48′15″~107°25′34″, latitude 33°38′03″~34°11′08″, altitude about 900~3400m, flow control station is Jiangkou Station.

[0192] The climate in the Jiangkou Basin belongs to the subtropical monsoon climate with obvious vertical zonality. The annual rainfall is mostly between 750 and 1000 mm, and the rainfall is unevenly distributed within the year, mainly concentrated in June to September. The vegetation coverage in the watershed is high, and the natural vegetation is well protected. The soil types in the watershed are mainly yellow-brown soil, brown soil and leached cinnamon soil, and the spatial distribution of soil varies greatly.

[...

Embodiment 2

[0293] Hydrological process simulation and accuracy evaluation in cold and arid regions.

[0294] 1. Overview of the study area

[0295] The vertical distribution of the landscape in the watershed is obvious, the forests are mainly distributed in the middle mountains, and the shrubs and pastures are distributed throughout the watershed. With an altitude of 3600m as the dividing line between the alpine ice and snow permafrost zone and the mountainous vegetation zone, above 4500m is the permanent glacial snow belt, and below that are alpine meadows and shrubs, intermountain basins, Zhongshan forests, Zhongshan meadow steppe belts, low Mountainous desert zone (Huang Qinghua, Zhang Wanchang; Improvement and application of SWAT distributed hydrological model in the mountainous watershed of the main stream of the Heihe River [J]; Journal of Nanjing Forestry University (Natural Science Edition); 2004-02). The annual precipitation in the basin is about 400mm, and the annual evaporati...

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Abstract

The invention discloses a method for designing a distributed-type hydrographical model based on a penetration-storage integrated dynamic runoff yield mechanism, which relates to a method for designing a hydrographical forecast model, and mainly comprises the following steps that: A) acquiring distributed-type parameters; B) generalizing hydrographic process of a river basin; C) designing a penetration-storage integrated runoff generation process; and D) designing a junction process. The method is based on the penetration-storage integrated dynamic runoff yield mechanism to coordinate the distribution of water in the hydrographical sub-processes and to dynamically simulate the runoff generation process of grids, so not only can an advanced calculation and simulation platform be provided to other associated hydrographical ecological research such as sand generation and sand output of the river basin, transportation and movement of nutrients, dispersion of pollutants and the like, but also drought and flood hazards of the society can be reduced, scientific references can be provided to the reasonable development and utilization of the water resource, and scientific reference and reasonable suggestions can be provided to the management and scheduling of the water resource in China.

Description

technical field [0001] The present invention relates to a method related to the design of a hydrological forecast model, more specifically a general-purpose product with a certain physical mechanism established by effectively combining Remote Sensing (RS), Geographic Information System (GIS), and Digital Elevation Model (DEM) technologies. On this basis, a distributed eco-hydrological model with grids as the smallest simulation unit, which can reflect the spatio-temporal variation mechanism of flow generation and confluence in the basin, is constructed. Background technique [0002] As a powerful tool for exploring the mechanism of the hydrological cycle and quantitatively evaluating the dynamic changes of water resources, the distributed hydrological model can theoretically explain the physical basis of the hydrological cycle and explain how water moves in the soil-vegetation-atmosphere transmission system And drives the cycle of matter and energy. The application of advan...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50
CPCY02A10/40
Inventor 张万昌张东
Owner NANJING UNIV
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