Granier-type thermal dissipation probes (TDP) were applied to measure tree sap flow dynamics in a naturally-regenerated Quercus liaotungensis forest in semiarid Loess Plateau region near Yan’an,Shaanxi Province.Air temperature,relative air humidity,solar radiation,and soil water content were monitored at the same time.In this paper,we measured diurnal courses of sap flow characteristics and analyzed relationships between sap flux density and environmental factors with three dominant trees during the growing...
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