[Dynamics of soil water under Vernicia fordii plantation in hilly red soil region of Southern China].
By using time domain reflectometry (TDR) , a fixed-position monitoring was made on the dynamic characteristics of soil water under Vernicia fordii plantation in the hilly red soil region of Southern China. The results showed that there was a significant difference in the soil water storage among different months, and the dynamics of soil water could be described as the phases of accumulation, depletion, and stabilization. Soil water had a significant variation in its vertical distribution, and the variation pattern differed in different seasons. Significant correlations existed between soil water storage and meteorological factors such as relative humidity (RH) , air temperature (t) , vapor pressure deficit (VPD) and rainfall (R) (P < 0. 05). After rain, soil water loss had a significant hyperbolic correlation with drought duration, while soil water storage had a significant linear negative correlation with this duration (P < 0. 05). With the extension of drought duration after rain, soil water loss tended to vary gently with increasing soil depth.
Huang
Zhi-gang
ZG
State Key Laboratory of Urban and Regional Ecology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China. huangzhigang03@hunau.net
Cao
Yun
Y
Ouyang
Zhi-yun
ZY
Tu
Nai-mei
NM
Zheng
Hua
H
D002681:China; D017753:Ecosystem; D012987:Soil / Q000032:analysis*; D014197:Trees / Q000254:growth & development*; D014867:Water / Q000032:analysis*; D014872:Water Movements
D012987:Soil; D014867:Water