广东季雨林的几个问题

SOME PROBLEMS ON THE MONSOON FOREST IN GUANGDONG

季雨林是分布在具有明显干湿季节变化热带地区，在干季或多或少，甚至全部落叶的森林植被；是介于热带雨林向热带稀疏林过渡的居间类型，而不是由热带雨林向亚热带常绿阔叶林过渡的植被类型。应归属于经向地带性植被，而非纬度地带性植被。并且，在广东南部沿海地区的气候条件下，也不会有季雨林发育。广东南部沿海地区的榕树＋香蒲桃＋野苹婆（Ｆｉｃｕｓｍｉｃｒｏｃａｒｐａ＋Ｓｙｘｙｇｉｕｍｏｄｏｒａｔｕｍ＋Ｓｔｅｒｃｕｌｉａｔａ）群落等类型不是季雨林，而是热带季节雨林，属广义的热带雨林范畴。

Monsoon forest is a vegetation type distributed in tropical regions which has distinct dry and wet seasons. It is more or less leaf less during dry season. It is one of the zonal vegetation types in East Asia distributed between tropical forest and savannah forest on the moisture gradient, instead of between tropical forest and subtropical evergreen broad-leaved forest on the temperature gradient. We believe that the monsoon forest could not develop under the climate of Guangdong areas, China. For instance, the Ficus microcarpa + Syzygium odoratum + Sterculia lanceolata formation was not monsoon forest, but tropical seasonal rain forest belonging to tropical rain forest in a wide sense.