Simple red tide early warning method

Abstract

The invention provides a simple red tide early warning method. In the method, the red tide early warning is realized by judging a risk level of a red tide to occur in the near future in a sea area according to the cell number of red tide organisms in the sea area, the physiological reaction of doubtful red tide organisms to the field water temperature and the possible changing condition of illumination for a short term in the near future in the sea area. The red tide early warning method is suitable for the field monitoring of each local sea area, needs to judge a few clear factors, saves large-scale instruments for obtaining the required data and needs no complex operation and judgment. In term of the early warning effect, the red tide early warning method has a high sensitivity and high reliability of a judged early warning result. If the method is popularized in each sea area and actually applied to each economic entity related to the sea and a corresponding red tide early warning coping mechanism is established in a production process, the ability of guarding against a risk and the market competition power of the method are absolutely enhanced.

Description

【Technical field】 [0001] The invention relates to an early warning method for red tide disaster reduction and prevention, in particular to a red tide disaster reduction and early warning method applicable to on-site monitoring in various local sea areas. 【Background technique】 [0002] Red tide is an ecological abnormal phenomenon in which certain algae or other micro-organisms in the ocean proliferate or gather explosively under certain environmental conditions, causing changes in water color or other abnormal marine environments. With the rapid development of marine economy, coastal industry and agriculture, and the continuous increase of urban and rural population, the amount of sewage discharged into the sea has increased rapidly, resulting in increasing pollution of estuaries, bays and coastal waters, and serious eutrophication of seawater, which has created a serious threat to red tides. Conditions are also an important factor for the frequent occurrence of coastal red...

AI Technical Summary

Problems solved by technology

[0005] The use of satellite remote sensing technology to forecast red tides, although it has the characteristics of a wide monitoring range, is limited by the band and is easily affected by the weather. The amount of effective red tide information obtained from remote sensing data is quite insufficient. Most of the red tides occur in the coastal waters (that is, the second-class sea waters). The hydrodynamic conditions in this sea area are complicated (terrain effects, etc.), the content of suspended sediment is large, and the background reflection of the bottom of the water is affected. big difficulty

Therefore, this technology still needs to be further improved, and its effect on red tide forecasting is not very satisfactory.

[0006] In addition, the automatic observation buoy technology is used to forecast red tides. Although it can obtain real-time continuous monitoring data and provide a large amount of timely information for the judgment of red tides in sea areas, it is limited by the monitoring range and high maintenance costs. This technology is also difficult to popularize and apply in various sea areas

Images