Effect of heron nesting on the nitrogen and phosphorus cycles of Acacia confuse forest in uninhabited island

鹭鸟是鹭科(Ardeidae)鸟类的总称，在我国分布极广，是湿地生态系统中重要的生物类群之一。鹭鸟多营巢于树、竹上，主要以幼鱼、虾、水生昆虫等水生生物和两栖类为食。当其归巢休憩时，会为营巢地带来数量可观的鸟粪。由于鸟粪中富含氮磷元素，必然会对营巢地森林生态系统的氮磷循环产生影响。本研究选取典型无居民海岛厦门市大屿岛白鹭自然保护区的鹭鸟营巢地台湾相思林(Acaciaconfuse)为试验对象，主要通过林地土壤和凋落物研究结合15N自然丰度法，揭示鹭鸟营巢对于森林生态系统氮磷循环的影响，为更好地认识鹭鸟作为将养分从水域向陆地转移的运输者在生态系统中的地位和功能提供科学依据。 本研究表明，鹭鸟营巢...The herons, long-legged freshwater and coastal birds in the Ardeidae family, are widespread in China and play an important role in wetland ecosystem. They often make nest on tree or bamboo and feed on young fish, shrimp, aquatic insect and amphibian. In the nesting area, a large amount of heron’s excreta rich with nitrogen and phosphorus element can be found, which often lead to changes in the nut...学位：理学硕士院系专业：海洋与环境学院环境科学与工程系_环境科学学号：2242008115147

Key Ecological Process and Risk-Control Strategies of the Resource Recycle Pattern through Route of Wastewater-Soil-Plant

综合分析了污水—土壤—植物系统资源再生的关键生态过程、工程风险来源,总结了进行系统结构优化、工艺参数核算、强化布水与集排水以及加强监测等风险控制对策。指出该系统实质是基于生态系统物质循环,以水资源和植物资源再生为主要特征的循环经济模式,是污水生态处理与回用技术和植物资源开发利用技术的有机结合体,兼具低成本、高经济效益和生态效益,可因地制宜,形式多样地促进水污染治理、节约水资源,适合中国国情。This paper mainly focused on analyzing the key ecological process and engineering risks of the resource recycle pattern through route of wastewater-soil plant,moreover,some strategies on how to control its engineering risks were also summarized such as how to optimize the structure of the pattern,budget the engineering parameters,strength the wastewater dosing/discharge and strengthen monitoring,etc.In fact,wastewater-soil-plant system was a typical pattern of circular economy which aimed to recycle the sources of water and plant products based on a natural ecological system recycle,so whose engineering techniques combined wastewater ecological treatment and plant resource exploitation ones,it owned both low-cost,high economic and ecological efficiency,various forms of water pollution management,and conservation of water resources for China's national conditions might be promoted with local conditions.厦门市市政府资