Urban river channel fish habitat evaluation method and system

An evaluation method and habitat technology, applied in the field of environmental hydraulics, can solve problems such as the lack of applicable urban river habitat assessment methods, and achieve a wide range of applications

Pending Publication Date: 2021-12-10
YANTAI UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Although there are many habitat models currently being applied t...

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  • Urban river channel fish habitat evaluation method and system
  • Urban river channel fish habitat evaluation method and system
  • Urban river channel fish habitat evaluation method and system

Examples

Experimental program
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Effect test

experiment example 1

[0147] The city river of the present invention chooses the vast river of Yantai City, of which

[0148] Based on the actual situation of the vast, squid and squid as the index fish of the whole river section; select the riverbed bottom, water level, flow rate, ammonia nitrogen, dissolved oxygen, water shore handover and the habitat impact factor of seven variables of river bank vegetation;

[0149] The whole process will be divided into 31 segments according to the change of habitat categories, and collect the measured data of the corresponding habitat impact factor in the 31 segment, as shown in Table 1, in Table 1, the flow rate, water level, DO and NH 3 -N data is measured data, the rest is classified in measured data; where the riverbed substrate L, M and H will range (0 ~ 3), (1 ~ 7), (5 ~ 9), The corresponding assignment range corresponding to (0 to 2), (1 to 4), (3 to 5), (3 to 6), (3 to 6), (4 ~ 6), (4 to 6), (4 ~ 6); The corresponding assignment range corresponding to (0 ...

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Abstract

The invention discloses an urban river channel fish habitat evaluation method and system. The method provided by the invention comprises the following steps: screening index fishes and at least one corresponding habitat influence factor in an urban river channel; dividing the urban river channel into at least one river reach, and collecting actual measurement data of at least one habitat influence factor in the at least one river reach; grading the at least one habitat influence factor according to different life stages of the index fishes, and obtaining a fuzzy set and a fuzzy rule of the index fishes according to the advantage value of the at least one stage of habitat influence factor and the weight of the at least one habitat influence factor in the habitat suitability of the index fishes; and inputting the measured data of the at least one habitat influence factor into the fuzzy set and the fuzzy rule of the index fishes to obtain the habitat suitability of the index fishes in the at least one river reach. According to the invention, the fish habitat suitability and the fuzzy logic are combined and applied to an urban river channel, so that the habitat suitability is more consistent with actual situations.

Description

Technical field [0001] Technical Field The present invention relates to environmental hydraulics, in particular it relates to an urban river fish habitat evaluation methods and systems. Background technique [0002] With urbanization, the natural law of the river hydrology, geomorphology and biological properties has been a lot of changes, mostly low-lying river city, a lot of interference by human activities, subject to greater stress than the natural river, the river serious degradation. [0003] For now, at home and abroad for river health and other aspects of extensive research, but more concentrated in the more natural river basins, less human intervention study of urban river more serious. [0004] River aquatic organisms, fish and has a relatively long life cycle of migratory species composition of fish and the presence of parasites or not a particular river areas may also reflect the long-term impact of external interference on the river area for the city by the river's h...

Claims

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Application Information

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IPC IPC(8): G06Q10/06G06Q50/26
CPCG06Q10/06393G06Q50/26
Inventor 张劲王小允易齐涛闵惠刘超利冷卓宇
Owner YANTAI UNIV
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