Effects of high litterfall amounts on the transport of mineral elements and dissolved organic matter in the soil of a warm temperate montane forest exosystem in Taiwan

台湾的高降雨率可能会导致土壤溶液迁移的森林生态系统的养分和溶解有机质流失的风险很高。此外，频繁发生的台风对该地区每年的垃圾数量有很大的影响。在这里，我们测试了一种假设，即由于凋落物的快速分解和相关的养分释放，在极高的凋落物投入后，土壤溶液的养分损失显着增加。此外，我们将量化溶解有机物在分解过程中对总质量损失的作用。为了验证这一假设，我们将通过实验操纵暖温带山地森林(Chamaecyparis obuse var.)的凋落物数量。Formosana和Chamaecyparis formosensis)。将在不同的深度连续进行土壤溶液化学研究。对于对照和操纵区，将计算元素与土壤溶液的通量。将用垃圾袋进行分解研究，以研究凋落物的分解动力学和养分释放。垃圾袋研究的结果和土壤溶液通量将结合到元素收支中，这将使人们深入了解这些生态系统的生物地球化学，并指出台风事件的关键影响。

High precipitation rates in Taiwan may result in a high risk of nutrient and dissolved organic matter losses from forest eco- systems with soil solution transport. In addition, frequently occurring typhoons have a strong effect on the annual amounts of litterfall in this region. Here we test the hypothesis that nutrient losses with soil solution significantly increase after exceptionally high litterfall inputs due to the quick decomposition of litter and the associated nutrient release. Furthermore we will quantify the role of dissolved organic matter for the overall mass loss during decomposition. To test the hypothesis we will experimentally manipulate the amount of litterfall in a warm temperate montane forest (Chamaecyparis obutse var. formosana and Chamaecyparis formosensis). Soil solution chemistry will be investigated continuously in different depths. Element fluxes with soil solution will be calculated for control and manipulated plots. Decomposition studies with litterbags will be conducted to study decomposition dynamics and nutrient release from the litter. The results of litterbag studies and soil solution fluxes will be combined to elemental budgets which will give insight into the biogeochemistry of these ecosystems and indicate the key influence of typhoon events.