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Index and method for ecological water demand zoning and classification

A classification method and ecological technology, applied in instruments, data processing applications, calculations, etc., can solve problems such as ecological water demand calculation, and achieve the effect of easy access and reliable partition classification results.

Inactive Publication Date: 2010-03-31
BEIJING NORMAL UNIVERSITY
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Problems solved by technology

However, most of the current zoning and classification work is carried out from the perspectives of water resources, physical geography, and landforms, and the results obtained cannot be directly used for the calculation of ecological water demand.

Method used

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  • Index and method for ecological water demand zoning and classification
  • Index and method for ecological water demand zoning and classification
  • Index and method for ecological water demand zoning and classification

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Embodiment Construction

[0019] Taking the Yellow River Basin as an example, combined with the attached figure 1 And attached figure 2 The present invention is described in further detail.

[0020] 1) As attached figure 1 As shown, using the spatial analysis function of the geographic information system (GIS), select the software environment for spatial analysis (such as ARCGIS, etc.), and perform projection conversion (Projection) on the watershed dryness map, runoff zone map, and landform zoning map, and integrate them with the watershed Water resource zoning map for registration.

[0021] 2) Overlay the three-level zoning map of water resources in the basin with the aridity map, the runoff zone map, and the geomorphic zoning map of the basin in order to obtain the preliminary ecological water demand zoning results.

[0022] 3) Qualitative analysis is carried out using altitude, water function zoning, water ecological status and key protected species, distribution of rivers and lakes and charact...

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Abstract

The invention discloses an index and a method for ecological water demand zoning and classification. In the method, on the basis of dominant factor prioritization and other principles, an ecological water demand zoning second-grade index system and a an ecological water demand classification second-grade classification system are created by referring to zoning and plan such as water source zoning,and a river basin or a zone can be divided into a series of relatively homogeneous and uniform units to provide a foundation for the calculation of ecological water demand. The method has the advantages that: the obtained zoning and classification results are reliable; the required documents such as a topographic map are common documents and are readily available; and powerful scientific evidences for the calculation of the ecological water demand and the reasonable configuration of water source can be provided.

Description

technical field [0001] The invention belongs to the technical field of environmental protection, and relates to an ecological water demand division, a classification index and a method. Background technique [0002] The rapid development of social economy has led to a sharp increase in human demand for water resources. Coupled with the irrational use of water resources in the past, the water resources needed to maintain the health of the natural ecosystem (ie, ecological water requirements) have been largely occupied, and the health of the ecosystem has continued to deteriorate. , leading to ecological and environmental problems such as river cut-off, lake shrinkage, and land desertification. Scientifically determining the ecological water demand, coordinating the water demand contradiction between human beings and ecosystems, and rationally allocating water resources are the fundamental ways to solve this problem. Therefore, the calculation of ecological water demand is ve...

Claims

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Application Information

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IPC IPC(8): G06Q90/00
Inventor 杨志峰崔保山尹民马乐宽
Owner BEIJING NORMAL UNIVERSITY
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