R2 values from OLS regression tests comparing 2002–2015 dVIs to the beetle-killed basal area of spruce in field plots measured in 2015.

R2 values from OLS regression tests comparing 2002–2015 dVIs to the beetle-killed basal area of spruce in field plots measured in 2015.

本数据集的R²值来源于普通最小二乘（Ordinary Least Squares, OLS）回归检验，该检验用于对比2002年至2015年的dVIs（差值植被指数，Difference Vegetation Index）与2015年野外样地实测的云杉甲虫致死断面积。