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生态学报  2004 

Tree-scale transpiration dynamics of Hedysarum scoparium in response to growth stage, groundwater table depth, and climate in a semi-arid environment in northwestern China

Keywords: Hedysarum scoparium,non-weighing constant water table lysimeter,transpiration,water use

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Natural precipitation is often limited and groundwater can be a very important water source for vegetation reestablishment and growth in the dryland regions. Therefore, quantifying water use by plant transpiration under different ground water tables helps to understand responsive mechanism of plant growth to various ground water regimes. One year-old seedlings of Hedysarum scoparium were planted in 1995 and single tree transpiration dynamics under constant water tables of 1.6 m, 2.6 m, and 3.6 m were measur...


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