Long-term measurements of microbial biomass and activity at the Hubbard Brook Experimental Forest 1994 – ongoing

Long-term monitoring of soil nitrate (NO3-) and ammonium (NH4+) concentrations, microbial biomass carbon (C) and nitrogen (N) content, microbial respiration, potential nitrification and N mineralization rates, pH, and denitrification potential has been ongoing at the Hubbard Brook Experimental Forest since 1994. Samples have been collected in the Bear Brook Watershed (west of Watershed 6) beginning in 1994. In 1998, our sampling regime was extended to Watershed 1 in an effort to monitor and quantify microbial response to a whole-watershed calcium addition. These data were gathered as part of the Hubbard Brook Ecosystem Study (HBES). The HBES is a collaborative effort at the Hubbard Brook Experimental Forest, which is operated and maintained by the USDA Forest Service, Northern Research Station.自1994年起，研究人员便在哈伯布鲁克实验林（Hubbard Brook Experimental Forest）持续开展长期监测，监测指标涵盖土壤硝酸盐（NO3-）与铵态氮（NH4+）浓度、微生物量碳（C）与氮（N）含量、微生物呼吸、潜在硝化速率、氮矿化速率、酸碱度（pH）以及反硝化潜力。1994年起，样本采集工作便在位于6号流域西侧的贝尔布鲁克流域（Bear Brook Watershed）启动。1998年，为监测并量化微生物对全流域施钙操作的响应，研究团队将采样方案扩展至1号流域。本数据集隶属于哈伯布鲁克生态系统研究（Hubbard Brook Ecosystem Study，HBES）项目。哈伯布鲁克生态系统研究（HBES）是哈伯布鲁克实验林的协同研究计划，该实验林由美国农业部林务局北部研究站（USDA Forest Service, Northern Research Station）运营维护。