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

• Applicant: Professor Dr. Otto Klemm
• Subject Area: Ecology and Biodiversity of Plants and Ecosystems
• Term: from 2008 to 2013
• Project identifier: Deutsche Forschungsgemeinschaft (DFG) - Project number 79828297

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.

• DFG Programme: Research Grants