Contribution of fog deposition to water and nutrient cycling in a subtropical mountain cloud forest

这是提交给DFG和台湾国家科学委员会(NSC)的合作伙伴提案的一部分。在台湾北部海拔1650公尺的亚热带山地云雾林中，靠近元阳湖(YYL)遗址的生态系统实验研究。是提议的。申请者的目标是研究雾沉积对钝顶叶树林内水文和氮循环的贡献。台湾松柏是台湾一种非常重要的柏树树种，近来通过林业活动不断更新。然而，对水分和养分的循环以及具体的生理机制还不是很清楚。YYL生态系统研究点的雾化频率很高，雾沉积可能在生态系统的生物地球化学循环中起着关键作用。该项目由两部分组成，一部分是一个长期(2年)计划，以野外常规观测为基础，通过模型方法量化雾的沉积和水的蒸散。第二个部分是通过四个密集的野外实验发展对过程的理解，其中雾的沉积通过微气象实验直接量化。对所应用的模型的反馈将是一个重要的特点。广泛的前期工作证明了这一主题的合理性和拟议研究的可行性。

This is part of a partner proposal to the DFG and the Taiwan National Science Council (NSC). An experimental ecosystem research study close to the Yuan Yang Lake (YYL) site, in the subtropical mountain cloud forest of northern Taiwan at 1650 m a.s.l. is proposed. The applicants aim to study the contribution of fog deposition to the hydrological and nitrogen cycle within a stand of Chamaecyparis obtusa var. formosana, which is an extraordinarily important cypress species of Taiwan, and which is being regenerated trough forestry activities lately. However, the water and nutrient cycles, and the specific physiology are not nearly understood. The fog frequency at the YYL esosystem research site is high, and fog deposition probably plays a key role in the biogeochemical cycles of the ecosystem. The project consists of two parts, one is a long term (2 years) program to quantify deposition of fog an evapotranspiration of water through model approaches, based on field routine observations. The second component is the development of process understanding through four intensive field experiments, in which the deposition of fog is directly quantified through a micrometeorological experiment. Feedback to the models applied will be an important feature. Extensive preliminary work proves the evidence of the topic and feasibility of the proposed study.