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Parametric modeling of root length density and root water uptake in unsaturated soil
Modeling optimization root distribution TDR water flow
2010/10/29
The problem of water movement through the root zone has attracted increasing interest during the last few decades. In this research, the spatial and temporal pattern of root water uptake in wetted soi...
根系吸水模型参数的混合遗传算法估算方法（Inverse Method Estimating Root Water Uptake Model Parameters Using Hybrid Genetic Algorithms）
根系吸水模型 参数优化 混合遗传算法
2009/9/11
构建了遗传算法与Levenberg-Marquardt算法相结合的混合遗传算法，用于求解根系吸水模型参数。分别进行数值试验和棉花根系吸水试验对混合遗传算法求解精度进行验证。数值试验表明，采用混合遗传算法优化求解根系吸水模型参数的优化值具有较高的精度，含水率资料的时间步长和空间步长对根系吸水模型参数的优化精度有较大影响，在实际中时间步长可取值5～10d，空间步长取值5～10cm。对室内棉花根系吸水进...
Deep Root Water Uptake Ability and Water Use Efficiency of Pearl Millet in Comparison to Other Millet Species
Deep root Deuterium Drought Heavy water Stable Isotope Transpiration Waterlogging Water source
2009/7/24
Pearl millet is better adapted to hot and semi-arid conditions than most other major cereals. The objective of this study was to compare the deep water uptake ability and water use efficiency (WUE) of...