• 方法与技术 •

### 福田红树林湿地生态系统EWE模型构建

1. (1深圳大学生命科学学院， 广东深圳 518060； 2广东内伶仃福田国家级自然保护区， 广东深圳 518048； 3内蒙古农业大学生态与环境学院， 呼和浩特 010019； 4深圳大学高尔夫学院， 广东深圳 518060)
• 出版日期:2014-05-10 发布日期:2014-05-10

### Construction of the EWE model of Futian mangrove wetland ecosystem.

CHOU Qing-chuan1, XU Hua-lin2, LIU Jun3, SHI Xiu-hua4**

1. (1 College of Life Science, Shenzhen University, Shenzhen 518060, Guangdong, China; 2 Neilingding Futian State Nature Reserve, Shenzhen 518048, Guangdong, China; 3College of Ecology and Environmental Science, Inner Mongolia Agricultural University, Hohhot 010019, China; 4Golf College, Shenzhen University, Shenzhen 518060, Guangdong, China)
• Online:2014-05-10 Published:2014-05-10

Abstract: In the present study, the biological composition of Futian mangrove wetland ecosystem was divided into 15 functional groups and covers almost the whole process of energy flow in the ecosystem, including mangrove plants, zoobenthos, phytoplankton, zooplankton, birds and detritus. Ecopath with Ecosim (EWE) software was used to construct the EWE model of the Futian mangrove wetland ecosystem. Furthermore, we also analyzed the state, characteristics and nutritional relationships among different species, and evaluated the current health state of the mangrove wetland ecosystem. The analysis showed that detritus was the most important source of energy flow of Futian mangrove wetland ecosystem. Energy flow occurred mainly at the trophic levels Ⅰ→Ⅳ. The highest conversion efficiency occurred between the trophic levels Ⅰ and Ⅱ (28.8%), and the overall conversion efficiency was 11.2%, which is in line with the flow efficiency value (about 10%) quantified by Lindemann. The system took the most abundant advantage of the trophic level Ⅱ. The functional groups at the lower trophic levels played a key role in the process of energy transfer, and their impacts on the whole system were very strong. The ecosystem overall characteristic parameters-total biomass/total through (TB/TT), connectance index (CI) and system omnivory index (SOI)- were 0.163, 0.123 and 0.018, respectively. Therefore, it could be concluded that Futian mangrove wetland ecosystem is currently in a trend of degradation.