Biomass Calculation And Prediction Based On Green Tide Spatial Distribution And Living Environment

Since 2007,the green tide has been a large-scale marine disaster that has seriously affected people's production and management activities over the years.Its periodic outbreaks have caused severe economic losses to coastal cities and caused great pressure on marine ecology.The types of green tide algae and their main causes,the occurrence and development of green tide,the drift path of green tide,the ecological adaptability of green tide algae,the early warning and prevention of green tide,etc.Compared with these research hotspots,compared with these research hotspots,there is much less research on green tide biomass.This also causes the annual response to green tide disasters to be untimely,and a large amount of energy is required to prevent and salvage,resulting in serious Consume.This article starts with the green tide algae outbreak mechanism,studies its outbreak rules,and combines the growth curves of the different growth stages of Marsh Moss,predicts the green tide biomass based on the two main factors of temperature and light,and simplifies the drift path.Introduction and application.The main research contents of this article are as follows:(1)Research and analysis of the green tide outbreak mechanism.The green tide outbreak is divided into four stages,namely the initial stage,the outbreak stage,the maintenance period and the extinction period.At the end of March and March,the green tide begins to appear in the Yellow Sea.The distribution area is small,and it is not easy to be monitored by satellites.Until the green tide begins to erupt in early May,the green tide can be clearly seen in the satellite image;from mid-May to early June,the green tide enters an outbreak stage,distribution The area is rapidly expanding and the biomass is rapidly increasing;from mid-late June to mid-July,the green tide enters the maintenance period.During this period,the green tide biomass maintains a low level of growth,and during this period,the green tide biomass reaches its maximum,from It began to die in late July and disappeared until the end.(2)Since the normalized vegetation index can distinguish green tide and water well,this paper uses this method to extract green tide.The extraction result uses RGB false color images synthesized by infrared,near infrared and infrared bands.Seawater is Black,green tide appears emerald green.(3)Divide the growth stage of Marsh Moss based on the green tide Marsh Moss aggregation form and density.The growth stage of Marsh Moss is divided into germination stage,seedling stage,adult stage and death stage.Marsh Moss in different growth stages corresponds to different growth rates.Calculation and prediction of green tide biomass.(4)Predict the green tide drift path.Combined with the prediction of biomass,a comprehensive forecast of the future green tide drift path and biomass can be realized to provide data support for green tide control and salvage.