(Table 2) Documented tree line shifts and site conditions for 10 sites studie...

Independently obtained results from repeat photography, repeat transect measurements and dendrochronological analysis were cross-referenced to determine the shift of the lower...对通过重复摄影、重复样带测量以及树木年代学（dendrochronological）分析独立获取的各项结果开展交叉比对，以明确其下界的变化……