Soil moisture response to rainfall in forestland and vegetable plot in Taihu Lake Basin, China

• DOI: 10.1007/s11769-014-0715-0
• Publication Date: 2014-09-12T10:11:31Z
• Authors: Qian Li; Qing Zhu; Jinsen Zheng; Kaihua Liao; Guishan Yang
• Keywords: Infiltration (HVAC); Soil horizon; Soil morphology; Interception

Soil moisture and its spatial pattern are important for understanding various hydrological, pedological, ecological agricultural processes. In this study, data of rainfall soil contents at different depths (10 cm, 20 40 cm 60 cm) in forestland vegetable plot the Taihu Lake Basin, China were monitored analyzed characteristics variation response to several typical events. The following results observed. First, great temporal was observed surface layer than deeper plot. contrast, forestland, had similar depths. Second, initial an factor influencing vertical movement water during plot, simultaneous 10- 20-cm due fast infiltration when relatively dry. However, traditional downward order occurred wet. Third, critical horizon interface active zone accumulation lateral movement. A less permeable W-B (40-cm depth) can create perched table above it elevate content corresponding depth. Fourth, land cover effective control small moderate events tiny influences on canopy O interception. Fifth, preferential flow subsurface interflow paths During large long duration events, through crack or pipe occurred, which recharged deep soil. more concentrated storm, connected by macropores main contributor occurrence flow. Findings study provide a theoretical foundation sustainable fertilizer management use planning Basin.