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River basin ecological water demand integration analysis technology

A technology of integrated analysis of ecological water requirements, applied in open-air water source surveys, measuring devices, instruments, etc., can solve the problems of providing scientific basis for rational allocation of water resources and difficulty in considering the compatibility of ecological water requirements in different spatial locations of the river basin, etc., to achieve Avoid calculation workload, simple calculation method, and strong practicability

Inactive Publication Date: 2010-10-20
BEIJING NORMAL UNIVERSITY
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Problems solved by technology

At present, different types of ecological water demand analysis techniques and methods are difficult to consider the compatibility of ecological water demand at different spatial locations in the watershed, and it is difficult to provide a scientific basis for the analysis of watershed-scale ecological water demand and the rational allocation of corresponding water resources.

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  • River basin ecological water demand integration analysis technology
  • River basin ecological water demand integration analysis technology
  • River basin ecological water demand integration analysis technology

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Embodiment approach

[0013] According to classification standards such as different functions, types, shapes and locations, and supply methods, the ecological water demand of the basin in this patent divides the ecological water demand of the basin into two types: consumptive water demand and non-consumptive water demand (as shown in Table 1).

[0014] Table 1 Classification and integration principles of watershed ecological water requirements

[0015]

[0016] This patent divides evaporation and seepage consumption water demands into consumptive water demands, and divides ecological base flow and sand transport water demands into non-consumptive water demands. The calculation of ecological water demand in a single zone or ecosystem should consider the accumulation of consumptive water demand and calculate the non-consumptive water demand based on the principle of the maximum value. The integration between dryland and wetland ecological water requirements in the same subregion is determined on ...

example

[0033]The integrated analysis technology for watershed ecological water demand provided by the present invention divides different types of ecological water demand in the watershed into consumptive and non-consumptive water demands, and clearly proposes the integration mode of ecological water demand under different scenarios, which can be used for watershed-scale ecological demand. Water Computing provides practical technical support. At the same time, the calculation method is simple and avoids cumbersome calculation workload.

[0034] In this case, the Haihe River Basin, which is very representative in the northern region, is selected as an example for analysis. The data involved in the research mainly comes from the Haihe River Basin Water Resources Bulletin. The ecological water demand of each subsystem of the Haihe River Basin was integrated and calculated using the integrated analysis technology of ecological water demand (Formula 1 to Formula 6). Firstly, integrate t...

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Abstract

The invention provides a river basin ecological water demand integration analysis method. Aiming at the problem that ecological water demands of different types in different spaces in a river basin have compatibility so as to cause the total amount of river basin scale ecological water to be hard to determine, the invention divides different ecological water demands into two types of a consumable type and a non-consumable type; according to the upstream and downstream relationship of a river and the link relationship of rivers and lakes, the invention provides six types of river basin ecological water demand integration modes, i.e. simple type, confluence type, split-flow type, combined type, chiasma type and estuary type; according to the maximum value principle and the compatibility principle, the total amount of ecological water demand under the different river basin ecological water demand integration analysis modes is calculated; a calculation result can be directly applied to river basin scale water resource configuration, has an important meaning for determining targets of the comprehensive management of water resources in China and ecological environment restoration and is an ecological water demand calculation method suitable for actual conditions in China.

Description

technical field [0001] The invention belongs to the technical field of environmental protection, and in particular relates to a basin-scale ecological water demand integration analysis technology, which solves the quantitative analysis problem of the total ecological water demand at the basin scale. Background technique [0002] The irrational development and utilization of water resources has become an important reason for the degradation of my country's river basin ecosystem. In recent years, with the increase of population and the development of economy, the extent of human exploitation and destruction of water resources has been increasing, and the degradation of ecosystems has intensified. The long-term sustainable development of regional social economy has been restricted. At present, ecological water demand calculation methods and technologies determine the ecological water demand by calculating the water requirements of different types of ecosystems and different ec...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01C13/00
Inventor 杨志峰刘静玲崔保山孙涛
Owner BEIJING NORMAL UNIVERSITY
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