LBA-ECO CD-05 土壤 VWC 和气象学、降雨排除、塔帕若斯国家森林
LBA-ECO CD-05 Soil VWC and Meteorology, Rainfall Exclusion, Tapajos National Forest
简介
本数据集报告了在巴西塔帕若斯国家森林 67 公里处的塞卡弗洛雷斯塔站进行的土壤湿度(以体积含水量 (VWC) 表示)、日降水量、气温、相对湿度和露点测量数据。这些测量数据是降雨排除实验 (REE) 的一部分,该实验旨在研究亚马逊湿润森林对严重干旱的响应。
从 1999 年到 2007 年,我们用连续高分辨率频域反射仪对两块 1 公顷地块的 VWC 进行了测量,深度达 11 米。其中一块地块在雨季被排除了约 75% 的穿透雨(排除),另一块地块则在正常条件下进行监测(对照)。
1999 年至 2006 年间,使用楔形雨量计测量了对照地块和附近空地的每日降水量。
2000年至2003年间,沿着该地点的对照地块和干燥地块的垂直森林剖面测量了空气温度、相对湿度和露点。
此数据集有三个以逗号分隔的数据文件 (.csv)。
摘要
File 1: VWC_REE_plots_1999_2007.csv. Samples were collected from May 17, 1999 through April 20, 2007.
Column | Heading | Units/format | Description |
---|---|---|---|
1 | Treatment | Plot identification: control or exclusion | |
2 | Date | YYYYMMDD | Sampling date |
3 | Pit | Pit identification: 1-10 | |
4 | Side | Location of the sensor in the pit, either the right (R) or left (L) wall | |
5 | Depth | cm | Depth in the soil at which the sensor is located reported in centimeters below the soil surface |
6 | VWC_original | cm3 per cm3 | Volumetric water content (VWC) reported in centimeters cubed (cm3) of water per centimeter cubed (cm3) of soil |
7 | VWC_reprocessed | cm3 per cm3 | VWC reprocessed reported in centimeters cubed (cm3) of water per centimeter cubed (cm3) of soil; where original values were determined to be unreliable, the reprocessed value is -9999 |
8 | Reprocessed | Flag to indicate that the original VWC value was reprocessed: 1 indicates reprocessing was necessary, 0 indicates original values are considered valid, and -9999 indicates there were no original values to consider | |
missing data are indicated by -9999 |
File 2: Rainfall_REE_plots_1999_2006.csv. Samples were collected from January 1, 1999, through January 31, 2006.
Column | Heading | Units/format | Description |
---|---|---|---|
1 | Date | YYYYMMDD | Sampling date (YYYYMMDD) |
2 | Ppt_Casa | mm | Rainfall over previous 24 hours measured at the Casa Onca site approximately 1 km from the experimental plots and reported in mm. Collections were not done on weekends, so Monday collections represent 3 days minus some evaporation |
3 | Ppt_REE_tower | mm | Rainfall over previous 24 hours measured at tower located in the control plot and reported in mm. Collections were not done on weekends, so Monday collections represent 3 days minus some evaporation |
4 | Exclusion | Indicates whether the exclusion panels were in place, with 1 indicating yes and 0 indicating no | |
missing data are indicated by -9999 |
File 3: Temp_RH_REE_plots_2000_2003.csv. Samples were collected from 2000 through August 2003. Note that there are nearly 515,000 observations in this 30-MB file.
Column | Heading | Units/format | Description |
---|---|---|---|
1 | Treatment | Plot identification: control or exclusion | |
2 | Sensor_code | Sensor identification | |
3 | Location | Sensors were located in both gap and closed forest locations | |
4 | Height | m | Height of sensor reported in meters above the soil |
5 | Date | YYYYMMDD | Sampling date in local time (YYYYMMDD) |
6 | Time | HH:MM | Sampling time in local time ( local time is UTC-4) |
7 | T_air | degrees C | Air temperature reported in degrees Celsius |
8 | T_dewpoint | degrees C | Dewpoint temperature reported in degrees Celsius |
9 | RH | percent | Relative humidity reported in percent |
missing data are indicated by -9999 |
Site boundaries: (All latitude and longitude given in decimal degrees)
Site (Region) | Westernmost Longitude | Easternmost Longitude | Northernmost Latitude | Southernmost Latitude | Geodetic Datum |
---|---|---|---|---|---|
Para Western (Santarem) - km 67 Seca-Floresta Site (Para Western (Santarem)) | -55.0000 | -55.0000 | -2.75000 | -2.75000 | World Geodetic System, 1984 (WGS-84) |
代码
引用
Silver, W. L., et al., (2000). Effects of soil texture on belowground carbon and nutrient storage in a lowland Amazonian forest ecosystem, Ecosystems, 3, 193-209. doi:10.1007/s100210000019
Nepstad,D.C., P. Moutinho, M. B. Dias-Filho, E. Davidson, G. Cardinot, D. Markewitz, R. Figueiredo, N. Vianna, J. Chambers, D. Ray, J. B. Guerreiros, P. Lefebvre, L. Sternberg, M. Moreira, L. Barros, F. Y. Ishida, I. Tohlver, E. Belk, K. Kalif, K. Schwalbe. 2002. The effects of partial throughfall exclusion on canopy processes, aboveground production, and biogeochemistry of an Amazon forest. Journal of Geophysical Research 107:8085
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