Biodiversity, species coexistence and ecosystem functiioning

生态系统功能对地球上的生命至关重要，在过去的几十年里，人们进行了一项重大的研究工作，以确定物种多样性和生态系统功能之间的关系。人们建造污水处理湿地和绿化屋顶等生态系统来提供特定的生态系统服务，但生态系统中物种数量与期望服务性能之间的关系很少被研究。拟议的研究将评估增加植物种类和不同植物生活型(草、肉质植物、灌木等)的作用。在改善绿化屋顶性能方面。绿色屋顶提供服务的能力，如夏季降温、冬季温度上升、碳捕获、雨水保留和抵抗不良植物入侵的能力，将在复制的绿色屋顶微观世界中进行评估。将对以最佳方式执行这些不同服务的植物物种和生命形式的特性进行评估，以确定一般植物特性与生态系统功能之间的关系。这将允许在许多不同地区选择植物，以优化屋顶的绿化功能。

Ecosystem functions are essential for life on earth, and there has been a major research effort in past decades to determine the relationships between species diversity and ecosystem functioning. People construct ecosystems such as sewage treatment wetlands and green roofs to provide specific ecosystem services, but the relationships between the number of species in the ecosystem and performance of desired services has been little investigated. The proposed research will evaluate the role of increasing the number of plant species and different plant life-forms (grasses, succulents, shrubs etc.) in improving green roof performance. The ability for green roofs to provide services such as summer temperature reductions, winter temperature increases, carbon capture, stormwater retention and resistance to invasion by undesirable plants will be evaluated in replicated green roof microcosms. The traits of plant species and life-forms that optimally perform these different services will be assessed to determine the relationships between general plant traits and ecosystem functions. This will allow for selection of plants in many different regions to optimize green roof functioning.