Optimal distinguishing method for red tide water body and main algae thereof

A discrimination method and technology with advantages, applied in the fields of marine technology, public safety, and marine ecology, which can solve the problems of high monitoring cost, complex red tide formation mechanism, poor timeliness and spatiality, etc.
CN102721655AInactive Publication Date: 2012-10-10TIANJIN UNIVERSITY OF SCIENCE AND TECHNOLOGY
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
TIANJIN UNIVERSITY OF SCIENCE AND TECHNOLOGY
Publication Date
2012-10-10
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention relates to an optimal distinguishing method for a red tide water body and a main algae thereof, which comprises the following steps: (1) acquisition of spectroscopic data, which comprises the processes of laboratory culture of a red tide algae, measurement of the remote sensing reflectance and the post treatment of the spectroscopic data; and (2) analysis of the spectroscopic data, i.e. Carrying out comparison of spectral absorption characteristic parameters by a spectral absorption characteristic parameter extraction method through utilizing ENVI (The Environment for Visualizing Images) software, extracting wavelengths of a reflection peak and an absorption peak by a spectral differential method and carrying out comparison analysis on the water bodies before and after the red tide main algae is inoculated. According to the invention, by the spectroscopic data of different red tide main algae, which is obtained in a laboratory and the spectroscopic data flow processing, an abnormal value is removed to obtain a remote sensing spectral curve of Karenia mikimotoi, alexandrium tamarense and AmPhidinium; and the foundation is laid for the extraction of the absorption characteristic parameters and the spectral differential method.
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Description

technical field

[0001] The invention belongs to the fields of marine ecology, marine technology and public safety, and relates to marine environmental ecological protection, in particular to an optical discrimination method for red tide water body and its dominant algae. Background technique

[0002] Red tide (Red tide) is an ecological anomaly in which some phytoplankton, protozoa or bacteria in seawater suddenly proliferate or highly gather in a short period of time under certain environmental conditions, causing the seawater to change color. Existing studies have shown that red tides not only cause significant economic losses to tourism, fishery resources and production, but also endanger the ecological environment of water bodies, destroy the circulatory system, and bring harm to human beings. According to incomplete statistics, the occurrence of harmful red tides is on the rise in my country. From 1998 to 2005, extremely large toxic red tides with an area of ​​several t...

Claims

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