The effect of plant water storage on water fluxes within the coupled soil-plant system [The role of plant water storage on water fluxes within the coupled soil-plant system] [electronic resource]

• Ngôn ngữ: eng
• Ký hiệu phân loại: 577.8 Synecology and population biology
• Thông tin xuất bản: Washington, D.C. : Oak Ridge, Tenn. : United States. Dept. of Energy. Office of Science ; Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy, 2016
• Mô tả vật lý: Size: p. 1093-1106 : , digital, PDF file.
• Bộ sưu tập: Metadata
• ID: 260678
• Chủ đề: 1. 60 applied life sciences; 2. Drought resilience; 3. Hydraulic redistribution; 4. Leaf-level gas exchange; 5. Nocturnal transpiration; 6. Plant water storage; 7. Root water uptake

Tóm tắt

 In addition to buffering plants from water stress during severe droughts, plant water storage (PWS) alters many features of the spatio-temporal dynamics of water movement in the soil?plant system. How PWS impacts water dynamics and drought resilience is explored using a multi-layer porous media model. Here, the model numerically resolves soil?plant hydrodynamics by coupling them to leaf-level gas exchange and soil?root interfacial layers. Novel features of the model are the considerations of a coordinated relationship between stomatal aperture variation and whole-system hydraulics and of the effects of PWS and nocturnal transpiration (F<
 sub>
 e,night<
 /sub>
 ) on hydraulic redistribution (HR) in the soil.