摘要
根据2001年对广东省红树林资源现状调查和作者过去5年的野外调查结果,中国广东有9084.0 hm2成熟红树林分布于其沿海100余处,占中国该类型红树林面积的41.4%,由28科50种树种组成,其中以白骨壤群落最占优势。各红树林群落多呈高密度而低矮群落外貌,如林地森林覆盖率大于0.7的红树林林地面积占全省红树林面积的68.0%;树木高度低于2 m的红树林群落面积是全省红树林面积的77.8%。1950以来,农田围垦、水产养殖池和城市扩建等原因使原有的54.6%的红树林面积消失。本文提出当前红树林保护力量仍然薄弱,必须采取有力保护管理措施,加强立法、科研与保护宣传,让当地居民参与红树林保护管理事务的决策。表5参11。
According to the survey of Guangdong mangrove resource in 2001 and authors field investigations in the past 5 years, the total mature mangrove land area of Guangdong Province was estimated at 9084 hm2, accounting for 41.4% of total mangrove land area of China. These mangrove forests totally consisted of 50 species belonging to 28 families, distributed at more than 100 locations along the coastlines of Guangdong and most of them present a high dense and dwarf appearance. The Ass. Avicennia marina is the most dominant mangrove association. The investigation results showed that the mangrove forests with coverage rates above 0.7 accounted for 68.0% of the total mangrove land area of the province and 77.8% of mangrove forests was less than 2 m in tree height. Since 1950, 54.6% of mangrove forests have disappeared due to paddy rice reclaim, aquaculture and city constructions. Derivational conservation efforts are still weakly empowered and should be strengthened intensively. The author suggested that mangrove laws and regulations should be enforced, mangrove scientific research should be strengthened; and mangrove conservation awareness of local community should be raised on conservation of mangroves.
