Based On The Landsat Images Of Soumo Township Fir Forest Carbon Reserves Estimation And Their Dynamic Changes On The Ground

In this study,the fir forest in Suomo Township of Barkam Country of Sichuan Province as the object of study,and using the method of remote sensing technology,according to the 2010 subcompartment data of Forest Resources inventory and Landsat remote sensing image data extract remote sensing band factor,vegetation growth factor and geologic factors etc that closely related index information about biomass of forest.The linear regression model of carbon storage and remote sensing factors of the ground fir forest was constructed by stepwise linear regression fitting method.Check the precision of the predicted value and the measured value of the model and if the result cannot conform to needs of precision,then return to re-modeling,until the precision reach the standard.If the precision conform to the research requirements,regard the carbon storage model of fir forest as the basics,the relative radiom correction method based on the PIF is used to correct the model so that it can reasonably be applied to other four-stage data The amount of estimates.Then,based on the above-mentioned estimation model of aboveground carbon storage of fir forest,the aboveground carbon storage of fir forest in 199,200,2005,2010 and 2015 was estimated,which revealed that in the past 20 years,spatio-temporal dynamics characteristics of fir forest in Barkam.conclusion as below:(1)The spatial distribution characteristics of carbon storage on the aboveground of the fir forest in Suomo Township manifested that:in the horizontal direction,the carbon storage is supported by the Suomo river basin and through the Suomo Township from east to the west and North-South extension,distribution like arborization.(2)The temporal variation characteristics of carbon storage on the aboveground of the fir forest manifested that:From 1995 to 2015,the total carbon storage capacity and carbon density of Suomo Township were growing in tim,consistent with the trend of carbon storage in Sichuan and the whole country.(3)The results show that the total carbon storage capacity and carbon density of the fir forest in the study area show a rising trend from 1995 to 2015,the carbon sinks are significant and the forest carbon storage structure is in the stage of benign development.The economic benefits and Ecological value is huge.