LBA-ECO ND-02 SOIL VOLUMETRIC WATER CONTENT, TAPAJOS NATIONAL FOREST, BRAZIL

This data set reports monthly measured soil volumetric water content (VWC) from a rainfall exclusion experiment that was conducted from 1999-2001 at the km 67 Seca Floresta site, Tapajos National Forest, Brazil. The purpose was to observe the potential effects of severe water stress on a humid Amazonian forest (Nepstad 2002). There are two ASCII comma delimited files with measured VWC, one for the control plot and one for the rainfall exclusion plot. These measured values were used by the authors to develop a model of daily changes in the distribution of water through the soil layers. The simulated daily VWC values are also provided in the file with the measured VWC. For comparison, results of VWC simulation for the control and treatment plots using a STELLA model which incorporates rainfall and plant water uptake are provided. There are two ASCII comma delimited files of simulated results. See Belk et. al., 2007 for details.本数据集记录了1999年至2001年在巴西塔帕若斯国家森林Seca Floresta站点67公里处开展的降雨排除实验中，逐月实测的土壤体积含水量（Volumetric Water Content, VWC）。本实验旨在探究重度水分胁迫对湿润亚马孙森林的潜在影响（Nepstad 2002）。数据集包含两份以逗号分隔的ASCII格式实测VWC数据文件，分别对应对照样地与降雨排除样地。 研究团队利用上述实测值构建了描述水分在土层中分布日变化的模型，实测VWC数据文件中同时附带了模拟得到的日度VWC值。为便于对比，本数据集还提供了采用集成降雨与植物水分吸收过程的STELLA模型生成的对照样地与处理样地VWC模拟结果。另有两份以逗号分隔的ASCII格式模拟结果数据文件，详细研究细节可参见Belk等人2007年的研究成果。