【摘要】 研究了海南东寨港红树林国家级自然保护区高、中、低潮区的海水物理化学环境周年变化及其与红树林生长的关系.本区海水透明度43.9±13.8cm、盐度31.01±0.81、pH值8.07±0.13、溶氧量5.87±0.58mg/L,均低于对照组.然而,海水温度26.7±0.9℃、化学需氧量4.00±0.23mg/L、硫化氢含量0.015±0.025mg/L、总氮含量2.239±0.620mg/L、活性磷酸盐含量1.117±0.452μmol/L、活性硅酸盐含量75.070±34.908μmol/L,均高于对照组.以上海水环境指标随红树林的消长呈季节性变化,显示出一定的特征.更多还原

【Abstract】 Presented in this paper are the annual changes in the physical and chemical characteristics of seawater and their relation with the mangrove growth in the high, middle and low tide zones of Dongzhai National Mangrove Consservancy. The result shows as a whole the region’s average seawater diaphaneity (43. 9 ± 13. 8cm), salinity (31. 10 ± 0. 81), pH value (8. 07 ± 0. 13) and content of DO (5. 87 ± 0. 58mg/L) were all lower compared with the control group. However, the region’s average seawater temperature (26. 7 ± 0. 9℃), COD (4. 00 ± 0. 23mg/L) , content of hydrogen sulphide (0. 015 ± 0. 025mg/L) , total nitrogen content (2. 239 ± 0. 620mg/L) , content of reactive phosphate (1. 117 ± 0. 452μmol/L) and reactive silicate (75. 070 ± 34. 908μmol/L) are all higher than those of the control group respectively. These marine environmental indices had a seasonal change with the growth fluctuation of mangrove jungles, displaying certain features.更多还原