红树林生长带与潮汐水位关系的研究

THE RELATIONSHIP BETWEEN MANGROVE ZONE ON TIDAL FLATS AND TIDAL LEVELS

根据海南东寨港林市村、廉江车扳镇那腮村、深圳锦绣中华等3个实验点10条横断面红树林潮滩高程水准测量，林市村潮汐水位观测，潮汐特征水位及浸淹频率分布计算，参照有关港点潮汐实例或预报资料，确定红树林外边界为平均海面或稍上，内边界（或林内最大高程）为回归期平均高高潮位（或大潮平均高潮位）。对国内外有关报道进行了评述。指出国内许多红树林文献中使用的“高潮位”、“中潮位”、“低潮位”用潮汐学术语表述应为“回归潮（或大潮）高潮位”、“中期高潮位”、“分点期（或小潮）高潮位”。明确红树林生长带位于平均海面以上的潮滩，对红树林建立和演替的研究，红树林宜林地选择及用红树林泥炭研究海平面变化均有重要意义。

The relationship between mangrove zone on tidal flats and tidal levels is one of theimportant subjects of mangrove ecology, but up to now there have not been clear and commonopinion of it. Levelling survey was made on the 10 sections of mangrove tidal flats at threecoastal sites. Linshicun of Dongzhaigang Harbor in Hainan Island, Nasaicun of ChebanzhenTown In Lianjiang County of the west Guangdong, and' Splendid China' of Shenzhen city.Based on the data from the survey, the tide observation and tidal data analysis at Linshiun,and the tide data from observation or prediction or prediction at nearest sites occurring on pub-lished'Tide Tables', we demonstrated that the mangrove zones can only occupy the upper partof the intertidal zone from slightly above mean sea-level to mean higher high water of tropictide, the corresponding inundation frequencies in; Linshicun are 47. 5 % and 2. 9 %respective-ly. several expression about the relationship between mangrove zone and tidal levels in previousmangrove literatures have been reviewed and clarified. The' high water', 'middle water',and 'Low water' in some mangrove literature should be ' high water spring (or tropic) tide',' high water middle tide', and 'high water neap (or equinoctial) tide' in tidology terminolo-gy. Above research results have great significance for studying establishment and succession ofmangrove ecosystem, collecting plantable tidal flat of mangrove silviculture, and researchingsea-level change with mangrove peat.