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) 2009至2010年于两处地点采集的蒸腾数据：阿拉斯加大学校园与博南扎溪（Bonanza Creek）。校园测点设于两处北方针叶林（boreal forest）样地，分别对应稳定多年冻土（permafrost）与不稳定多年冻土样地；博南扎溪测点分为两处，其一为桦木-柳灌丛（birch willow shrubland），其二为黑云杉林（black spruce forest），两处均为稳定多年冻土样地。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处理，且每日更换DryRite干燥剂。
(2) 与上述蒸腾数据采集地点完全一致的土壤信息数据文件，该文件涵盖不同土壤类型的土层深度、重量法土壤含水率及容重数据。
(3) 针对史密斯湖3号样地、梯度桦木柳灌丛样地，以及苏厄德半岛（Seward Peninsula）与巴罗（Barrow）地区的苔原（tundra）样地的土壤水分特征曲线数据，此类数据用于将重量含水率转换为水势（water potential）。
(4) 史密斯湖与博南扎溪样地的冻土融化深度数据。