应用生态学报2012，Vol.23Issue(10)：2878-2886,9.
基于Ecopath模型的荣成俚岛人工鱼礁区生态系统结构和功能评价
Structure and function of Lidao artificial reef ecosystem in Rongcheng of Shandong Province, East China: An evaluation based on Ecopath model
摘要
Abstract
Based on the annual investigation data of biological resources in Lidao artificial reef zone in 2009, an Ecopath model of the Lidao artificial reef ecosystem was constructed to analyze the energy flow pattern and the system attributes of the ecosystem. The model was consisted of 19 functional groups, basically covering the main processes of the energy flow in the Lidao artificial reef ecosystem. The functional groups were divided according to the relationships of the corresponding positions between appeared fishes and artificial reefs, and the planktonic heterotrophic bacteria were included into the model as a functional group. The fishes appeared in the investigation zone were divided into seven functional groups, and the trophic levels of the functional groups varied from 1.00 to 3.72. The type I fishes had the highest trophic level. The total system throughput was estimated to be 10786. 68 t · km · a , 27% of which flowed to detritus, and 17% flowed out the ecosystem in the forms of fishing and sediment. The total net primary productivity of the system was 4131. 97 t · km-2·a-1, and the total energy transfer efficiency was 10. 5%. The proportion of the total flow originated from detritus was 39% , and that from primary producers was 61% , indicating that the energy flow was dominated by food web rather than detritus. The ratio of total primary productivity to total respiration of the system was 1. 84, the connectivity index was 0. 20, and the Finn' s cycling index and the mean path length of the energy flow were 4. 5% and 2. 62, respectively. This study showed that the Lidao artificial reef ecosystem had a relatively low maturity and sta-bility, was at a developing stage, and had weak resistance against outside interference. The ecological environment and the output of fisheries in the artificial reef zone would have inter-annual fluctuations , and thus, the eco-environment restoration of the artificial reef ecosystem could only be realized by the sustainable maintaining of the ecosystem.关键词
人工鱼礁/能量流动/系统特征/Ecopath模型Key words
artificial reef/ energy flow/ system attribute/ Ecopath model分类
农业科技引用本文复制引用
吴忠鑫,张秀梅,张磊,佟飞,刘洪军..基于Ecopath模型的荣成俚岛人工鱼礁区生态系统结构和功能评价[J].应用生态学报,2012,23(10):2878-2886,9.基金项目
海洋公益性行业科研专项(200805069)和公益性行业(农业)科研专项(200903005)资助. （200805069）
