Soil volumetric water content data of the 0-200 cm profile of research sample sites

A set of automatic soil water content and temperature monitoring equipment were installed in each site，these sample sites were grouped into three age-classes: young stands (5–10 years) of Pinus tabuliformis in Dianta Town (DTPT) and Zaowa (ZWPT), and Platycladus orientalis in Zhanghuazhai (ZHPO); middle-aged (20–30 years) mixed P. orientalis–Prunus armeniaca forests on the sunny and shaded slopes of Dongshan Park (DSS1 & DSS2) and P. orientalis in Jinjie Town (JJPO); and mature (60 years) P. tabuliformis in Zidazhuang (ZDPT), respectively.