Net ecosystem exchange of CO2 and H2O in a subtropical mountain cloud forest (Taiwan)

亚热带山地云林中 CO2 和 H2O 的净生态系统交换（台湾）

• 批准号: 79828297
• 负责人: Professor Dr. Otto Klemm
• 金额: --
• 依托单位: Institut für Landschaftsökologie
• 依托单位国家: 德国
• 项目类别: Research Grants
• 财政年份: 2008
• 资助国家: 德国
• 起止时间: 2007-12-31 至 2012-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/79828297?language=en
• 关键词: Net; ecosystem; exchange; CO2; H2O

The aim of the project is to quantify the net ecosystem exchange of CO2 and H2O in a subtropical mountain cloud forest in Taiwan by using the eddy covariance method, and to achieve more information about the import and export fluxes of CO2 and H2O over complex terrain.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 aim of the study is to examine the CO2 budget and possible advection on estimates of net ecosystem-atmosphere exchange within a stand of Chamaecyparis obtusa var. formosana in Taiwan. Chamaecyparis obtusa var. formosana is an extraordinarily cypress species which only grows in the mountain cloud regions in Taiwan and which has been regenerated through forestry activities lately. In the content of global change, it is very important to quantify the CO2 biosphere-atmosphere exchange especially of the not well examined regions. It is also important to advance measurement methods on heterogeneous terrain so that it will become feasible to quantify gas exchange over various forest canopies. Although extensive discussion of the advective fluxes exists in literature, direct observations of the contributions of advection and horizontal flux divergence to NEE measurements are rare. The problem should be solved with two dimensional measurements by using the eddy covariance method.

该项目的目的是使用涡流协方差方法量化台湾亚热带山云森林中二氧化碳和H2O的净交换，并在复杂地形研究上获得有关CO2和H2O的进口和出口量的更多信息。提出了A.S.L.。该研究的目的是检查二氧化碳预算，并可能对Chamaecyparis ottusa var的账单内的净生态系统 - 大气交换的估计值进行对流。台湾的福尔摩萨娜。 chamaecyparis obtusa var。福尔摩萨娜（Formosana）是一种极端的柏树，仅在台湾山区云地区生长，并且最近通过林业活动重生。在全球变化的内容中，量化二氧化碳生物圈 - 大气交换非常重要，尤其是未经良好检查的区域。在异质地形上进行测量方法也很重要，以便在各种森林檐篷上量化气体交换将变得可行。尽管文献中存在对对流通量的广泛讨论，但很少有对对流和水平通量差异的贡献的直接观察很少见。该问题应使用涡流协方差法通过二维测量解决。

项目成果

Comparison of sonic anemometer performance under foggy conditions

• DOI: 10.1016/j.agrformet.2013.01.005
• 发表时间: 2013-04
• 期刊: Agricultural and Forest Meteorology
• 影响因子: 6.2
• 作者: T. El-Madany;F. Griessbaum;G. Fratini;J. Juang;Shih-Chieh Chang;O. Klemm

Low-level jets and above-canopy drainage as causes of turbulent exchange in the nocturnal boundary layer

• DOI: 10.5194/bg-11-4507-2014
• 发表时间: 2014-08
• 期刊: Biogeosciences
• 影响因子: 4.9
• 作者: T. El-Madany;H. Duarte;D. Durden;Bastian Paas;M. J. Deventer;J. Juang;M. Leclerc;O. Klemm