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海南东寨港红树林沉积物中叶绿素a和脱镁叶绿酸含量

刘均玲1,2**,黄勃1,2   

  1. (1海南大学热带生物资源教育部重点实验室, 海口 570228; 2 海南大学海洋学院/海南省热带水生生物技术重点实验室, 海口 570228)
  • 出版日期:2013-11-10 发布日期:2013-11-10

Chlorophyll-a and phaeophorbidea contents in the sediments of mangroves in Dongzhai Bay of Hainan Province, South China.

LIU Jun-ling1,2**, HUANG Bo1,2   

  1. (1Key Laboratory of Tropical Biological Resources of Ministry of Education, Haikou 570228, China; 2Ocean College, Hainan University, Hainan Key Laboratory of Tropical Hydrobiological Technology, Haikou 570228, China)
  • Online:2013-11-10 Published:2013-11-10

摘要: 于2010年9月—2011年6月,秋(9月)、冬(12月)、春(3月)和夏季(6月)4次测定海南东寨港红树林沉积物中的叶绿素a和脱镁叶绿酸含量。结果表明,沉积物中叶绿素a、脱镁叶绿酸的水平分布不同采样点差异明显。叶绿素a含量为1.59~6.82 μg·g-1,平均值为2.98 μg·g-1,随深度增加呈降低趋势。0~2、2~5、5~8 cm叶绿素a含量分别为1.59~6.82、0.70~5.93、0.60~4.49 μg·g-1。叶绿素a平均含量的季节变化相似,叶绿素a最高含量,0~2 cm出现在9月(6.82 μg·g-1),2~5和5~8 cm均出现在6月(分别为5.93、4.49 μg·g-1)。沉积物中脱镁叶绿素酸的分布与叶绿素a的分布一致,含量为1.81~14.22 μg·g-1,最高浓度值出现在2011年6月E站(14.22 μg·g-1)。

关键词: 硅, 植硅体, 毛竹, 母岩, 植硅体碳

Abstract: A seasonal investigation was conducted on the chlorophyll-a (Chl-a) and phaeophorbidea (Pha-a) contents in the sediments of mangroves in Dongzhai Bay of Hainan Province from September, 2010 to June, 2011. There was an obvious difference in the horizontal distribution of chl-a and pha-a in the sediments between different sampling points. The chl-a content was 1.59-6.82 μg·g-1, with an average of 2.98 μg·g-1, and decreased with increasing sediment depth, being 1.59-6.82, 0.70-5.93, and 0.60-4.49 μg·g-1 in 0-2,  2-5, and 5-8 cm layers, respectively. The average chl-a contents in different sampling points had the similar seasonal variation pattern, with the highest chla content in 0-2 cm layer in September (6.82 μg·g-1), and in 2-5 and 5-8 cm layers in June (5.93 and 4.49 μg·g-1, respectively). The pha-a in the sediments had the similar distribution trend to chl-a. The pha-a content was 1.81-14.22 μg·g-1, being the highest (14.22 μg·g-1) at E station in June, 2011.

Key words: Si, phytolith, Moso bamboo, parent rock., phytolith-occluded carbon (PhytOC)