A method for determining habitat suitability

A habitat and suitability technology, applied in the field of determining habitat suitability and determining habitat suitability based on multiple linear regression, can solve problems such as ignoring the complexity of habitats and not being able to properly express natural water bodies

Inactive Publication Date: 2017-06-13
BEIJING NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Fish habitat selection is obviously a multivariate process, which is affected by multiple interacting variables. Existing calculation methods ignore the complexity of habitats and cannot properly express the situation of natural water bodies.

Method used

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  • A method for determining habitat suitability
  • A method for determining habitat suitability
  • A method for determining habitat suitability

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Experimental program
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Embodiment 1

[0063] Below with two kinds of fishes of a watershed as embodiment further illustrate the present invention.

[0064] 1. Key species screening and data collection

[0065] The typical species fish 1 and fish 2 in a watershed were selected for analysis. The river flow in a certain basin is 5-30m 3 / s, 14 sets of comparative sampling were carried out in different rivers and seasons, and there were 668 river section units sampled, with an area of ​​5-50m 2 between. Fish were collected and identified by electric fish method in each river section unit. Randomly measure 5-10 water depths and 5-30 point flow velocities in the reach unit to obtain the frequency distribution of water depth and flow velocity. Different subsets obtained from different rivers were analyzed together because species information obtained from only one river is usually insufficient to fully reflect habitat preference.

[0066] 2. Multiple linear regression to establish the relationship between species re...

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Abstract

A method for establishing criteria for habitat suitability. First, determine the typical fish species and life stages that need to be studied in the research river section, conduct investigations on the life stages and living habits of key species, and conduct unit division and river habitat data collection for the research river section; then, use multiple linear regression methods to establish The habitat suitability function represented by the habitat variable and the habitat suitability represented by the species response are combined to obtain the relationship between the species response and the habitat variable; finally, the least square method is used to solve the relationship between the species response and the habitat variable The regression coefficient in the formula was used to obtain the habitat suitability standard established by the multiple regression method. This method can consider the interaction between habitat variables, and determine the response of species through the cumulative effect of multiple environmental characteristics, making the simulation results more reasonable.

Description

technical field [0001] The invention belongs to the field of ecological environment protection, and relates to a method for determining habitat suitability, in particular to a method for determining habitat suitability based on multiple linear regression. Background technique [0002] Physical habitat environmental factors have a significant impact on fish populations and diversity, and biological communities also have special sensitivity and preference for habitat. Various environmental changes can directly or indirectly affect fish habitat preferences. At present, a variety of methods for establishing habitat suitability indicators have been developed to quantitatively describe the relationship between habitats and species. The classic method of habitat quantification is Habitat Suitability Index (Beecher HA, Caldwell BA, Demond SB. Evaluation of depth and velocity preferences of juvenile cohosalmon in Washington streams[J]. North American Journal of Fisheries Management,...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F19/00
Inventor 易雨君
Owner BEIJING NORMAL UNIVERSITY
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