Handheld Soil moisture below Caesalpinia spinosa trees

This data file (AtiquipaCS620soilmoisture.csv) contains data on spatial patterns of volumetric soil moisture recorded below Caesalpinia spinosa trees on Cerro Lloque, Comuna Campesina de las lomas de Atiquipa y Taimara, Provincia de Caravelí, Región de Arequipa, Perú. All data was recorded using a CS620 handheld TDR soil moisture probe (Cambell Scientfic Inc., Utah, USA). Soilmoisture readings were taken at varying distances from the base of trees (0 to 500cm in 50cm intervals) with 5 replicate measurements at each distance, for transects extending in each cardinal driection from the base of trees. Of this data, only that from a distance of 150cm from the base (below the canopy but unaffected by stemflow) of experimental tree pairs (1 and 2), pooled for all cardinal directions, was used in Stanton, Huallpa et al. 2014. For more any additional information about the data or the study please contact Dr. Daniel Stanton ([e-mail]). The columns are as follows: Date: Date of sampling as Year-month-day. Number: Number of the experimental tree (1 through 7). Direction: Cardinal direction from tree base of sampling transect (E-East, S-South, W-West, N-North). Distance: Distance in cm from base of tree of sampling location. Soilmoisture: Volumetric soil moisture (%)本数据集文件为AtiquipaCS620soilmoisture.csv，包含秘鲁阿雷基帕大区卡韦利省阿提基帕与泰马拉乡郊社区洛克罗山（Cerro Lloque）上刺云实（Caesalpinia spinosa）树下的体积土壤水分空间分布观测数据。所有数据均采用CS620手持式时域反射（Time Domain Reflectometry, TDR）土壤水分探头（美国犹他州坎贝尔科学公司（Campbell Scientific Inc.））采集。采样以树基为原点，沿东、南、西、北四个主方位布设样带，在距树基0至500cm范围内以50cm为间隔采集土壤水分数据，每个间隔设置5次重复测量。本数据集仅选用实验树对1号与2号、距树基150cm处（冠层下方且不受茎流（stemflow）影响）、整合所有主方位的观测数据，用于Stanton、Huallpa等人2014年的研究。如需了解该数据集或本研究的更多相关信息，请联系丹尼尔·斯坦顿博士（[e-mail]）。数据集各列字段说明如下：Date：采样日期，格式为年-月-日；Number：实验树编号（1至7）；Direction：采样样带相对于树基的主方位（E-东、S-南、W-西、N-北）；Distance：采样点距树基的距离，单位为厘米（cm）；Soilmoisture：体积土壤含水量（%）