Alaskan Peatland Experiment: Community structure and productivity data for 2007-2010 IV - Understory Vascular ANPP

This dataset contains net primary productivity (NPP, g/m2/yr) measurements for understory vascular components of the plant community collected at peak biomass in the summer of 2009 at the Alaskan peatland experiment. Two peatland types are included, a bog site and a fen site. Within the fen site a water table manipulation has been ongiong since 2005, with control, lowered and raised water table treatment plots. Samples at the bog were collected in a plot established within the lowland black spruce permafrost plateau (permafrost), and two plots established within collapse scars embedded within the plateau. One collapse scar formed ~ 45 years ago (old collapse) and the other formed ~ 25 years ago based upon aerial photography provided by the BCEF LTER. The data provided in this data set can be sorted by site and plot.本数据集收录了2009年夏季在阿拉斯加泥炭地实验中，于植物群落林下维管植物组分的生物量峰值期采集的净初级生产力（NPP，g/m²/年）实测数据。本次实验涵盖两类泥炭地：高位泥炭沼泽（bog）样地与低位泥炭沼泽（fen）样地。其中低位泥炭沼泽样地自2005年起持续开展水位调控实验，设置对照、降水位及升水位三类处理样地。高位泥炭沼泽的样品采集自三处样地：一处布设在低地黑云杉永久冻土（permafrost）高原内，另外两处布设在该高原内嵌的塌陷坑中。根据BCEF长期生态研究站（BCEF LTER）提供的航空影像推断，两处塌陷坑分别形成于约45年前（简称老塌陷坑）与约25年前。本数据集收录的数据可按样地类型与样地进行分类筛选。