基于地理加权回归的青藏高原季节冻土区土壤有机碳空间分布研究

王栋, 吴晓东, 魏献花, 吴通华, 赵林, 李韧, 胡国杰, 邹德富, 李旺平

Modelling soil organic carbon distribution in the seasonally frozen ground area on the Qinghai-Tibet Plateau using the geographically weighted regression

Dong WANG, Xiaodong WU, Xianhua WEI, Tonghua WU, Lin ZHAO, Ren LI, Guojie HU, Defu ZOU, Wangping LI

表2 不同环境变量组合下GWR模型的精度评价

Table 2 Accuracy evaluation of GWR model under different combinations of environmental variables

环境因子组合 R2 调整R2 AICc 环境因子组合 R2 调整R2 AICc MAP 0.751 0.741 459.334 MAP+Elevation Failed MAT 0.801 0.766 455.070 MAT+Elevation Failed NDVI 0.812 0.794 396.729 NDVI+Elevation Failed Slope 0.788 0.476 481.608 Slope+Elevation Failed MAP+MAT 0.739 0.728 476.239 MAP+MAT+Elevation Failed MAP+NDVI 0.799 0.791 392.665 MAT+NDVI+Elevation Failed MAP+Slope 0.748 0.735 470.639 NDVI+Slope+Elevation Failed MAT+NDVI 0.832 0.824 368.744 MAT+Slope+Elevation Failed MAT+Slope 0.815 0.766 478.439 MAP+Slope+Elevation Failed NDVI+Slope 0.816 0.797 395.967 MAP+NDVI+Elevation Failed MAP+MAT+NDVI 0.815 0.807 381.938 MAP+MAT+NDVI+Elevation Failed MAP+MAT+Slope 0.732 0.718 489.698 MAP+MAT+Slope+Elevation Failed MAT+NDVI+Slope 0.810 0.807 376.649 MAP+NDVI+Slope+Elevation Failed MAP+MAT+NDVI+Slope 0.818 0.808 371.194 MAT+NDVI+Slope+Elevation Failed Elevation Failed MAP+MAT+NDVI+Slope+Elevation Failed