Plant functional identity contributes more to productivity and stability than functional diversity in wetlands

The functional trait diversity of plant communities regulates biodiversity effects on ecosystem function and stability. However, the role of functional trait diversity in driving ecosystem productivity and stability in natural wetlands remains unclear. Using vegetation data from 1139 sites across U.S. wetlands, we elucidate the role of functional diversity and functional identity of plant size traits and resource economics traits in driving satellite-derived productivity and temporal stability at continental scales.植物群落功能性状多样性（functional trait diversity）可调控生物多样性对生态系统功能与稳定性的影响效应。然而，功能性状多样性在驱动自然湿地生态系统生产力与稳定性过程中所发挥的作用仍不明晰。本研究基于美国境内1139个湿地样点的植被调查数据，阐明了植物株型性状（plant size traits）与资源经济性状（resource economics traits）的功能多样性（functional diversity）及功能属性（functional identity）在大陆尺度上驱动卫星反演生产力（satellite-derived productivity）与时间稳定性（temporal stability）的作用机制。