枸杞海藻场生态系统能量流动模型初探  

The primary research of the energy flow in Gouqi kelp bed ecosystem

作　　者：赵静[1] 章守宇[1] 许敏[1] 

机构地区：[1]上海海洋大学海洋科学学院海洋生态系统与环境实验室,上海201306

出　　处：《上海海洋大学学报》2010年第1期98-104,共7页Journal of Shanghai Ocean University

基　　金：国家"八六三"高技术研究发展计划项目(2006AA100303);国家自然科学基金(NSFC30871924);国家科技支撑计划(2007BAD43B03);上海市教委重点学科项目(J50702)

摘　　要：海藻场是近岸典型生态系统,系统结构特殊,生物资源丰富,能流结构复杂且特征明显。本研究应用生态通道模型(Ecopath),构建枸杞海藻场生态系统能量流动模型,并做简单分析,通过对营养级、各级流量、生产量、系统总特征等方面的分析,结合海藻场自身生态系统特点,初步评估了海藻场生态系统状况,并探讨了其形成机制,得出枸杞海藻场内鱼类平均营养级为3.425,最高营养级为3.628,系统营养级较低。枸杞海藻场生态系统的总初级生产力为每年11 604.00 t/km2,枸杞海藻场生态系统总能量转换效率为12.7%,可以看出枸杞海藻场内初级生产力很高,转换效率也非常高,为藻场内生物资源提供了保障。枸杞海藻场生态系统的P/R比值是1.247,较同海区人工鱼礁生态系统和东海区平均水平更接近1,说明枸杞海藻场生态系统处在比较成熟,相对比较稳定的状态。The kelp bed is a typical offshore ecosystem, with especial ecosystem structure and abundance aquieolous resources, which made it have a complex energy structure and obvious character. By using Ecopath with Ecosim （EWE） software, a mass-balanced ecopath model of the kelp bed ecosystem in Gouqi was constructed. Through the analysis of the trophic level, energy flowing, and the ecosystem characters etc. also combining the function of kelp bed, the state of the kelp bed was estimated, and the causes were discussed here. The average tropical level of fish is 3. 425, and the highest tropical level in kelp bed is 3. 628, it was a little low in kelp bed. Total primary production is 11 604.00 t/km^2/year, and the transfer efficiency in the kelp bed system is 12.7%, which showed that the primary production in kelp bed ecosystem was high, meanwhile the high transfer efficiency lead to the high abundance of the resources. The kelp bed ecosystem is mature for the P/R index is 1. 247, closer to 1 than the artifical reef ecosystem and the East China Sea ecosystem.

关 键 词：枸杞岛 海藻场 能流结构 ECOPATH 

分 类 号：S931.1[农业科学—渔业资源]