The priority in forest history studies was shifted from forest history in the temperate zone to forest history in tropicalzone.
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
Mangroves, as a special forest, growing in tropical and subtropical zone, occupy mainly five functions as(1) Protect embankment, prompt the process of land formation;