Litter decomposition and nitrogen cycling in forest soils: influences of tree species and site factors

森林土壤中的凋落物分解和氮循环：树种和立地因素的影响

• 批准号: 203607-2012
• 负责人: Prescott, Cindy
• 金额: $ 2.77万
• 依托单位: University of British Columbia
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2012
• 资助国家: 加拿大
• 起止时间: 2012-01-01 至 2013-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=507823
• 关键词: Litter; decomposition; nitrogen; cycling; forest

In the proposed research, I will measure gross and net rates of N cycling processes in forest floors under several common tree species in common garden experiments to establish how divergent N cycling is amongst tree species, and the characteristics of the litter or forest floors that are most influential in determining the dominant N forms and N fluxes in forest floors under different tree species. This will inform us as to how introducing a new tree species for purposes of forestry, reclamation or assisted migration in response to climate change will alter the site, particularly nitrogen cycling and availability. I will also compare N cycling in natural forests that differ in climate, vegetation and soil, which will provide new insights into soil N cycling in natural forests and the factors that influence the nature of these cycles.

在拟议中的研究中，我将测量几个常见的树种在常见的花园实验，以建立不同的N循环是树种之间的森林地面的N循环过程的毛利率和净利率，以及最有影响力的凋落物或森林地面的特性，在确定不同树种下的森林地面的优势N的形式和N通量。 这将告诉我们，为了林业、填海或应对气候变化的协助迁移而引入新树种将如何改变场地，特别是氮循环和可用性。我还将比较不同的气候，植被和土壤，这将提供新的见解土壤氮循环在天然林和影响这些周期的性质的因素，天然林中的N循环。