The priority in forest history studies was shifted from forest history in the temperate zone 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。
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;
红树林具有五个方面的作用：1．促进海滩沉积过程，造陆作用，保护堤坝；
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;
红树林具有五个方面的作用：1．促进海滩沉积过程，造陆作用，保护堤坝；
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