LTREB: Hydrologic-Nutrient Cycle Interaction in Small Undisturbed and Human-Manipulated Ecosystems

本研究的目标是继续收集数据，以增加独特的，长期（39年）的大气沉积物（包括雨，雪，干沉积）的河流，湖泊和地下水在哈伯德布鲁克山谷，新罕布什尔州的化学记录。这些数据将用于评价对酸雨、森林砍伐、冰暴等干扰的生物和化学反应以及从这些干扰中恢复的情况，并用于对整个流域进行实验性操作。镜湖冰盖持续时间的长期记录为全球气候变化提供了重要的监测手段。在未来5年内，这些数据将解决的问题分为两大类：1）哈伯德布鲁克森林和生态系统如何应对包括酸沉降，气候变化和道路盐污染在内的干扰？2）生态系统的不同方面对这些干扰的反应和恢复有多快？这项研究的更广泛的影响延伸到教育，推广和国家环境政策的制定。所产生的长期记录为努力解决重大环境问题的决策者提供了必要的视角。这个长期的研究计划也为本科生提供了一个独特的教育和培训机会。当地中学班级使用本研究的数据，哈伯德布鲁克生态系统研究网页上的“教育资源”网站将促进与更广泛的学校团体的互动。

The goal of this study is to continue to collect data to add to the unique, long-term (39 years) record of the chemistry of atmospheric deposition (including rain, snow, dry deposition) of the stream, lake and ground water in the Hubbard Brook Valley, New Hampshire. These data will be used to evaluate the biological and chemical response to, and recovery from, disturbances such as acid rain, forest cutting, ice storms, and experimental manipulations of entire watersheds. The long-term record of duration of ice-cover on Mirror Lake provides an important monitor of global climate change. Questions that will be addressed with these data over the next 5 years fall into two major categories: 1) how does the Hubbard Brook forest and ecosystem respond to disturbances including acid deposition, climate change, and road salt pollution?, and 2) how quickly to different aspects of this ecosystem respond to, and recover from, these disturbances? Broader impacts of this study extend to education, outreach, and the formulation of national environmental policy. The long-term records generated provide a necessary perspective to decision makers wrestling with solutions to major environmental issues. This long-term research program also provides a unique education and training opportunity for undergraduate students. Local middle-school classes use data from this study, and the interaction with wider school groups will be facilitated by the 'Education Resources' site on the Hubbard Brook Ecosystem Study web page.