River health evaluation method based on natural and social influence

A technology for social impact and health assessment, applied in the fields of instrumentation, computing, electrical digital data processing, etc., can solve problems such as spending a lot of time sampling and data collection, and it is difficult to find environmental reference points, and achieve the effect of strong applicability

Inactive Publication Date: 2017-02-22
CHONGQING UNIV
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Problems solved by technology

In addition, although the predictive model method is currently a widely used river health assessment method, it also has many limitations
For example, under the current state of the domestic environment, it is difficult for

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  • River health evaluation method based on natural and social influence
  • River health evaluation method based on natural and social influence
  • River health evaluation method based on natural and social influence

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Embodiment Construction

[0045] The preferred embodiments of the present invention will be described in detail below; it should be understood that the preferred embodiments are only for illustrating the present invention, rather than limiting the protection scope of the present invention.

[0046] A river health assessment method based on natural and social influences, the steps are as follows:

[0047] a. Determine the evaluation factor set, that is, n evaluation indicators, U={u 1 ,u 2 ,...,u n}.

[0048] b. According to the established river and lake health evaluation index standard and the established 5-level river and lake health degree, determine the evaluation set V={Ⅰ,Ⅱ,Ⅲ,Ⅳ,Ⅴ}={very healthy, healthy, sub-healthy, unhealthy, Very unhealthy}, each level corresponds to a fuzzy subset evaluation set.

[0049] c. Determine the single-factor membership function.

[0050]Among them, the qualitative indicators use the method of field investigation combined with expert judgment to determine the de...

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Abstract

The invention discloses a river health evaluation method based on natural and social influence. The river health evaluation method comprises the following steps that (a) an evaluation index system is established, and an evaluation factor set is determined; (b) according to the established river health evaluation index standard and determined river and lake level-5 health degree, and each level corresponds to one fuzzy subset evaluation set; (c) a single-factor subordinating degree function is determined; (d) a fuzzy relation matrix is established; (e) fuzzy weight vectors of rating factors are determined; (f) fuzzy comprehensive assessment is performed; (g) vector analysis is conducted on fuzzy comprehensive evaluation results. By the adoption of the river health evaluation method, the comprehensive evaluation results can be obtained, health degrees of single indexes can be also provided, accordingly convenience is brought to diagnosis performed by a drainage basin manager on a drainage basin water environment, and an accurate and effective management measure is implemented.

Description

technical field [0001] The invention relates to the field of water area monitoring, in particular to a river health evaluation method based on natural and social influences. Background technique [0002] As we all know, the chemical characteristics, physical habitat and aquatic organisms of water body constitute the integrity of river ecosystem. Existing studies are basically based on these three aspects to complete the river health assessment, and can be divided into three types: (a) based on the presence or absence of a single indicator species or the concentration of specific chemical indicators; (b) based on the ecological Functional integrity, using the process rate as an evaluation index (such as plant respiration and photosynthesis rate); (c) based on multiple evaluation factors, combined with comprehensive indicators of water quality, biodiversity and physical habitat to evaluate the health of the water environment. Among them, the evaluation method using a single i...

Claims

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Application Information

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IPC IPC(8): G06F19/00
CPCG16Z99/00
Inventor 罗坤胡学斌刘丹平何强刘松
Owner CHONGQING UNIV
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