Water budget components and forest structure in burned and unburned longleaf pine stands, the Jones Center at Ichauway, Southwest Georgia, USA, 2015 - 2021

This data package includes data tables used to assemble a stand-level water budget of the longleaf pine-wiregrass ecosystem in southwestern Georgia, USA, between 2015 and 2021. Water budgets were estimated by measuring or modeling each distinct water budget component. Thus, the data tables included in the package are generally divided by stratum (i.e. overstory, midstory, vegetative groundcover, litter layer) and/or process (i.e. evaporation or transpiration). Relevant forest structure data is also included; they are often presented in tables alongside estimates of transpiration. Much of the data were collected across a soil moisture gradient, at both mesic and xeric sites, and in stands treated with different fire regimes: frequent prescribed fire (FF) or fire exclusion (EX). For some data, site or treatment may not be specified if the data were not collected for comparative purposes, but rather as representative baseline data for models that would be applied across sites and treatments. Transpiration data contained within this package include: 1) seasonal averages of daily sap-flux for pines and oaks measured with thermal dissipation probes 2) daily and seasonal transpiration for individual trees 3) seasonal transpiration for functional groups of shrubs and small trees 4) seasonal transpiration of groundcover functional groups Evaporation data contained within this package include: 1) Continuously-measured canopy interception and throughfall 2) overstory stemflow 3) midstory stemflow 3) groundcover interception and throughfall 4) litter moisture content data paired with time since rain (to develop litter drying curves), and 5) litter moisture content data paired with recent rain event depth (to develop litter wetting curves) Forest structure data contained within this package include: 1) Annual measures of tree DBH 2) Biannual estimates of small tree and shrub DBH, by functional group 3) Monthly estimates of groundcover functional group leaf area index 4) Monthly measures of litter biomass and water content

本数据包包含用于组装美国佐治亚州西南部2015年至2021年长叶松-须芒草（longleaf pine-wiregrass）生态系统林分尺度水量平衡（stand-level water budget）的各类数据表。

水量平衡通过对各独立水量平衡组分进行实测或建模估算得到，因此本数据包内的数据表通常按林分层次（stratum）——即乔木层、中层植被、地表植被覆盖层、枯落物层——或过程（即蒸发（evaporation）与蒸腾（transpiration））分类。

数据包同时涵盖相关森林结构数据，此类数据常与蒸腾估算结果一同以表格形式呈现。

本数据集的大部分采样点沿土壤水分梯度布设，包含中生境（mesic）与旱生境（xeric）两类样地，并设置了两种不同火烧制度处理样地：高频计划性火烧（FF）样地与无火烧封禁（EX）样地。

部分数据未标注样地或处理方式，此类数据并非用于对比研究，而是作为可跨样地与处理方案应用的模型的代表性基准数据。

本数据包包含的蒸腾数据如下：
1）利用热扩散探针（thermal dissipation probes）测得的松树与橡树日均液流季节平均值；
2）单木日尺度与季节尺度蒸腾量；
3）灌丛与小乔木功能群的季节蒸腾量；
4）地表植被功能群的季节蒸腾量。

本数据包包含的蒸发数据如下：
1）连续监测的林冠截留量（canopy interception）与穿透降雨量（throughfall）；
2）乔木层茎流（stemflow）；
3）中层植被茎流；
4）地表植被覆盖层截留量与穿透降雨量；
5）与降雨后时长配对的枯落物含水量数据（用于构建枯落物干燥曲线）；
6）与近期降雨事件雨量配对的枯落物含水量数据（用于构建枯落物湿润曲线）。

本数据包包含的森林结构数据如下：
1）林木胸径（DBH, diameter at breast height）年度监测数据；
2）按功能群划分的小乔木与灌丛胸径半年期估算数据；
3）地表植被功能群叶面积指数（LAI, leaf area index）月度估算数据；
4）枯落物生物量与含水量月度监测数据。