LTER: Hubbard Brook Experimental Forest

9810221fahey本项目将继续在哈伯德布鲁克实验森林进行长期生态研究（LTER），努力提高对环境、干扰、生物活动以及森林景观中能量和物质流动的相互影响的一般理解。这个在哈伯德布鲁克和其他区域站点进行的长期监测和过程级研究的综合计划解决了两个主题类别中的一系列假设：生物地球化学和植被动力学。生物地球化学研究的重点是碳、氮、钙和硫的循环，特别是建立在哈伯德布鲁克实验流域30多年的通量记录之上，以解决东北森林中关于元素循环的几个惊人和令人惊讶的观察结果。此外，在景观尺度上对植被和初级生产力的研究将进一步扩大，重点关注树木空间分布、土壤和冰凌性质以及氮循环和营养之间的相互作用。本研究将以模拟模型和元素循环专题综述的形式进行综合和整合。

9810221FaheyThis project will continue the Long-term Ecological Research (LTER) at the Hubbard Brook Experimental Forest in an effort to improve general understanding of the mutual influences of environment, disturbance, biological activity and the flows of energy and materials in forest landscapes. This integrated program of long-term monitoring and process-level studies at Hubbard Brook and other regional sites address a series of hypotheses in two thematic categories: biogeochemistry and vegetation dynamics. The biogeochemical studies focus on the cycles of carbon, nitrogen, calcium, and sulfur and build especially upon a 30+ year record of fluxes from the Hubbard Brook Experimental watersheds to address several striking and surprising observations about element cycling in northeastern forests. In addition, investigations of vegetation and primary productivity at the landscape scale will be expanded, focusing upon the interactions between tree spatial distributions, soil and glacial till properties, and nitrogen cycling and nutrition. This research will be synthesized and integrated using simulation models and in the form of monographic overviews of elemental cycles.