Eight Mile Lake Research Watershed, Carbon in Permafrost Experimental Heating Research (CiPEHR): physical and chemical properties of soils, 2009-2013

The Carbon in Permafrost Experimental Heating Research (CiPEHR) project addresses the following questions: 1) Does ecosystem warming cause a net release of C from the ecosystem to the atmosphere?, 2) Does the decomposition of old C, that comprises the bulk of the soil C pool, influence ecosystem C loss?, and 3) How do winter and summer warming alone, and in combination, affect ecosystem C exchange? We are answering these questions using a combination of field and laboratory experiments to measure ecosystem carbon balance and radiocarbon isotope ratios at a warming experiment located in an upland tundra field site near Healy, Alaska in the foothills of the Alaska Range. This data set includes measurements of moisture, bulk density, ash, carbon, and nitrogen concentrations, and carbon and nitrogen stable isotope composition (?13C and ?15N) at depth increments in soil cores collected in 2009, 2010, 2011, and 2013 from warming and control treatment plots.

永久冻土碳实验加热研究（Carbon in Permafrost Experimental Heating Research, CiPEHR）项目旨在解答如下科学问题：1）生态系统增温是否会引发碳从生态系统向大气的净释放？2）占土壤碳库主体的老旧碳分解，是否会对生态系统碳流失产生影响？3）单独及联合实施的冬季与夏季增温，会如何影响生态系统碳交换？本项目依托坐落于阿拉斯加山脉山麓、阿拉斯加州希利镇附近的高地苔原野外增温实验站点，结合野外实地与室内实验室实验，通过测定生态系统碳平衡与放射性碳同位素比值，解答上述问题。本数据集收录2009、2010、2011及2013年，从增温处理与对照处理样地中采集的土壤岩心，按深度分层测定的水分、容重、灰分、碳与氮浓度以及碳、氮稳定同位素组成（δ¹³C与δ¹⁵N）。