Correlation Analysis between Vegetation Index and Meteorological Factors in Subtropical Area
Using climate data and satellite monitoring data of 13 counties and cities in Honghe Prefecture in recent 20 years,the influence of meteorological factors on forest vegetation was studied by correlation analysis and regression analysis.The results showed that:1,against the backdrop of global warming,the overall growth trend of forest vegetation in Honghe Prefecture is related to one year lag of meteorological conditions.2,there is a certain correlation between vegetation index and sunshine and temperature in subtropical regions,especially the difference between the central and southern subtropical regions.Excessive heat in hotter areas is not conducive to forest growth,but insufficient heat in colder areas.3,the highest correlation between vegetation index and water condition,the total amount of vegetation in the coming year can be predicted and estimated by establishing the regression equation of accumulated temperature and precipitation.
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