Boreal plant and soil water

There are 4 data files. (1) transpiration data collected from 2009 to 2010 at two sites: the University of Alaska campus and at Bonanza Creek. On campus, the data were collected from two boreal forest sites, one with stable and one with unstable permafrost. At Bonanza Creek, data were collected at two sites, one was a birch willow shrubland and the other was a black spruce forest... both have stable permafrost. Data were collected from 9am to 3pm with LiCor 1600 porometer. The data were leaf area corrected when necessary. The DryRite was changed every day. (2) Soil information collected at the same sites as the transpiration data. This file includes depth of different soil types and gravimetric and bulk density data. (3) Soil moisture release curves for the smith lake 3 & gradient birch willow sites, and a tundra site on the Seward Peninsula & in Barrow. This data is to convert gravimetric data to water potential. (4) thaw depth for the smith lake and bonanza creek sites.

本数据集共包含4个数据文件：
(1) 蒸腾数据：2009年至2010年在两处地点采集，分别为阿拉斯加大学校园区与博南扎克里克（Bonanza Creek）。校园区内的测点设于两处寒带森林样地，其一为永久冻土（permafrost）稳定样地，其二为永久冻土不稳定样地；博南扎克里克的测点同样设置两处，分别为桦木柳树灌丛样地与黑云杉林样地，两处均为永久冻土稳定样地。数据采集时段为每日9时至15时，采用LiCor 1600型气孔计（LiCor 1600 porometer）完成采集，必要时会对叶面积数据进行校正，且DryRite干燥剂每日更换。
(2) 土壤信息数据：采集场地与上述蒸腾数据的样地完全一致，文件包含不同土壤类型的土层深度数据，以及土壤重量含水率与容重数据。
(3) 土壤持水曲线数据：涵盖史密斯湖3号样地、梯度桦木柳树灌丛样地，以及苏厄德半岛与巴罗的苔原（tundra）样地，该数据集用于将土壤重量含水率转换为水势数据。
(4) 解冻深度数据：针对史密斯湖与博南扎克里克样地的解冻深度数据集。