This data is from the TDP observation data of Yinxiandong Primary Forest Observation Field (E107.1941206 °; N29.06757 °, 1194m above sea level) of National Field Scientific Observation and Research on Karst Ecosystem in Jinfo Mountain, Chongqing from March 6 to December 31, 2018. Each TDP observation system has 8 sets of probes, and the observation species is pine. According to the different heights and DBH of trees, select sample trees to install TDP (Thermal Diffusion sap flow velocity probe), and adopt domestic TDP pin type thermal diffusion plant stem flow meter, with the model of TDP30. The sample plots are TDP-1, TDP-2 and TDP-3, which are located 30 meters south of the flux observation tower. The height of the sample tree is TDP-2, TDP-1 and TDP-3 from high to low, and the diameter at breast height is TDP-2, TDP-3 and TDP-1 from large to small (this part is filled in according to the actual situation of different observation sites), so as to measure the trunk sap flow on behalf of the whole area. The installation height of the probe is 1.3m, and the installation orientation is southeast, southwest and due north of the sample tree. The original observation data of TDP is the temperature difference between probes. The acquisition frequency is 30 seconds, the average time is 10 minutes, 144 groups of data a day, and the missing data is marked as NAN.
JFS_ TDP_ Observation year
Kong, D. (2022). TDP observation data of Yinxian Cave at Jinfo National Station (2018). Upper Yangtze River Scientific Data Center, (Download the reference：
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| East: 107.19 | West: 107.19 |
|---|---|
| South: 29.07 | North: 29.07 |
