近30年海南岛土壤有机质时空变异特征及成因分析
姜赛平,张认连,张维理,徐爱国,张怀志,谢良商,冀宏杰

Spatial and Temporal Variation of Soil Organic Matter and Cause Analysis in Hainan Island in Resent 30 Years
JIANG SaiPing,ZHANG RenLian,ZHANG WeiLi,XU AiGuo,ZHANG HuaiZhi,XIE LiangShang,JI HongJie
表3 RF模型预测精度
Table 3 Prediction accuracy of SOM contents using RF
Period ME RMSE R2
1980s -0.464 6 10.146 9 0.206 0
2012 1.816 2 5.783 6 0.247 6