Soil chemical elements and ground-surface hydrothermal conditions

Wujiaqu2021_Xray.csv: An Olympus Vanta handheld X-ray fluorescence (XRF) spectrometer was used to monitor the internal and external data at the PPP and collect the soil element concentration data in different positions on the PPP panels, on every 10 rows of panels, and at different orientations inside and outside the PPP. Wujiaqu2021_TDR.csv: The temperature and humidity of the soil ground surface layer were monitored using an Acclima Sensor Reader Kit (SDI-12).