The priority in forest history studies was shifted from forest history in the temperatezone to forest history in tropical zone.
就国际森林史研究来看，经历了一个从重点研究温带森林史向热带森林史转变的过程。
2
Heng Mts., Shanxi is located in the ecotone of temperate grassland zone and warm-temperate deciduous broad-leaved forestzone according to China Vegetation Regionalization.
在中国植被分区上，山西恒山是温带草原地带与暖温带落叶阔叶林地带的交错区。
3
Hengshan Mts, Shanxi, is located in the ecotone between temperate grassland zone and warm-temperate deciduous broad-leaved forestzone according to the result of China vegetation regionalization.