荣成俚岛近岸海域大叶藻的生态学研究  

Ecological Study on Eelgrass of Inshore Areas in Lidao Town of Rongcheng City

作　　者：郭栋[1] 张沛东[1] 张秀梅[1] 李文涛[1] 张新军 

机构地区：[1]中国海洋大学海水养殖教育部重点实验室,山东青岛266003 [2]荣成市水产科学技术研究所,山东荣成264300

出　　处：《中国海洋大学学报（自然科学版）》2010年第9期51-55,共5页Periodical of Ocean University of China

基　　金：国家自然科学基金项目(30700615);国家高技术研究发展计划项目(2006AA100303)资助

摘　　要：2008年6月，对山东荣成俚岛南起马他角，北至俚岛湾东端“外遮岛”之间2m以浅近岸海域大叶藻的分布、生物量、形态特征、花及栖息环境进行了调查。结果显示，该海域大叶藻呈片状分布，每片面积在1．5～2．0m^2之间，平均分布密度1650株／m^2；大叶藻平均生物量为3．754g／株；平均根质量0．4324g／株，根长范围2～14cm，平均根长4．8295cm，根的平均直径为0．1mm；平均茎质量0．4609g／株，平均茎长4．407cm／株，茎的平均直径为2．159mm；平均节数为9．27节／株，平均节长5．144mm；平均叶质量2．294g／株，叶长范围17-70cm，平均叶宽5．28mm，平均叶长45．23cm，平均叶鞘长6．824cm;单性花，雌雄同株，2个雌花之间有2个雄花，每个花序轴上有雄花13-19个，雌花7～11个；底质环境为砾砂。调查结果丰富了大叶藻生态学的研究内容，也为大叶藻受损生物群落的生态修复技术奠定了先期工作基础。Distribution, biomass, morphology, seed and habitat of eelgrass （Zostera marina L. ） were surveyed within the water depth of 2 m of inshore areas in Lidao Town of Rongcheng City （between Mata Jiao and ＂Waizhe Dao＂ of Lidao Bay） in June 2008. gelgrasses in the survey areas show a patch-shape distribution and area for each patch is between 1.5 and 2. 0 m^2. Average spacing, density, and biomass of eelgrass are 1 650 ind/m^2, and 3. 754 g/ind, respectively. For root, root length range is 2-14 cm and average root weight, root length, and diameter of root are 0. 432 4 g/ind, 4. 829 5 cm, and 0. 1 mm, respectively. For rhizome, average rhizome weight, rhizome length and diameter of rhizome are 0. 460 9 g/ind, 4. 407 cm/ind and 2. 159 mm, respectively. For node, average numbers of node and node length are 9.27 nodes/ind and 5. 144 mm, respectively. For leaf, leaf length range is 17-70 cm and average leaf weigth, leaf width, leaf length and sheath length are 2. 294 g/ind, 5.28 cm, 45.23 cm and 6. 824 era, respectively. Flower of eelgrass is monosexual flower and hermaphrodite. There are two female flowers between two male flowers. The numbers of male flowers and female flowers are 13-19 and 7-11 ind/reproductive line, respectively. The character in sediment of eelgrass is gravel sand. The results in this paper enrich the knowledge of eelgrass ecology and provide data for study on restoration of injured eelgrass biome.

关 键 词：大叶藻 分布 生物量 形态特征 花 栖息环境 

分 类 号：S917.3[农业科学—水产科学]