A method for calculating ecological water demand target of river by zoning classification grading

By using a zoned, categorized, and graded method for calculating river ecological water demand, this approach addresses the problem of existing technologies failing to consider complex geographical environments and differences in human activities. It achieves scientific rigor and applicability in ecological water demand calculation, supporting the management and safeguarding of river ecological water demand.

CN122198323APending Publication Date: 2026-06-12CHINA INST OF WATER RESOURCES & HYDROPOWER RES
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
CHINA INST OF WATER RESOURCES & HYDROPOWER RES
Filing Date
2026-03-02
Publication Date
2026-06-12

AI Technical Summary

⚠Technical Problem

Existing methods for calculating ecological water demand fail to effectively consider the differences in complex geographical environments and human activity intensity, making it difficult to adapt the calculation results to regions with vast areas and diverse climate and hydrological conditions, and neglecting the water demand in areas with high human activity.

⚗Method used

Using a zoning and classification method, rivers are divided into three types based on their natural conditions and differences in human development and utilization: no-flood type, summer-flood type, and spring-summer dual-flood type. These are further divided into two types: high-development type and low-development type. The minimum ecological flow and suitable ecological flow are calculated by combining the water supply and demand relationship of the river's ecological protection objects.

🎯Benefits of technology

By scientifically dividing and classifying rivers, we can rationally determine the ecological protection targets of rivers, propose a graded system for ecological water demand, effectively balance the water demand of ecological environment and economic and social development, reflect the true condition of rivers, and help to implement ecological water demand.

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Abstract

The application discloses a kind of partition classification hierarchical river ecological water demand target calculation method, the method includes the following steps: step 1, collecting research area data;Step 2, the river of research area is partitioned;Step 3, the river of research area is classified;Step 4, determine ecological protection object;Step 5, ecological water demand target hierarchical calculation.The method is disclosed in the application by considering the difference of river natural conditions and human development and utilization, the river of research area is scientifically partitioned and classified, and the ecological protection object of river is reasonably determined, the hierarchical system of ecological water demand including minimum ecological flow and suitable ecological flow is proposed, the water demand of river ecological environment and economic and social development is effectively considered, the real situation of river is objectively reflected, is helpful to the implementation of ecological water demand, provides technical support for river ecological water demand management and guarantee.
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