SGER: Atmosphere-Canopy Interactions Following Hurricane Disturbance in a Montane Forest in Puerto Rico

最近的一次飓风使波多黎各的山地云雾林落叶，这为研究树冠结构对大气中物质沉积的影响以及这些物质到达森林地面之前的化学处理提供了机会。Drs。洛维特和阿斯伯里假设：1。随着冠层的恢复，云水沉积将首先随着沉积面的增加而增加，然后随着冠层变得足够致密以限制风和云滴的穿透而减少。2. 冠层将吸收NO3-、NH4+和H+，并释放所有其他离子。在恢复的初始阶段，吸收或释放量将迅速增加，然后在冠层表面积较高的水平上趋于平稳。3. 由于孔洞和树枝上有丰富的化学活性附生植物，随着冠层的恢复，茎流化学的变化将大于穿透化学的变化。这项创新研究利用自然灾害来研究森林冠层-大气相互作用的特性。这是研究全球变化和大气沉积的一个重要领域。Drs。洛维特和阿斯伯里是非常合格的研究人员，他们在采样和模拟冠层-大气相互作用方面有经验。

The defoliation of montane cloud forest in Puerto Rico by a recent hurricane offers an opportunity to investigate the influence of canopy structure on the deposition of material from the atmosphere and the chemical processing of that material before it reaches the forest floor. Drs. Lovett and Asbury hypothesize that: 1. As the canopy recovers, cloud water deposition will first increase in response to increasing surfaces for deposition, and then decrease as the canopy becomes dense enough to limit penetration of wind and cloud droplets. 2. The canopy will take up NO3-, NH4+, and H+ and release all other ions. The amount of uptake or release will increase rapidly in the initial stages of recovery and then level off at higher levels of canopy surface areas. 3. Because of the abundance of chemically active epiphytes on boles and branches, stemflow chemistry will change more than throughfall chemistry as the canopy recovers. This innovative research takes advantage of a natural catastrophe to investigate the properties of forest canopy- atmosphere interaction. This is an important area of research for global change and atmospheric deposition. Drs. Lovett and Asbury are highly qualified investigators who have experience with sampling and modeling canopy-atmosphere interactions.