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根据田间试验观测资料，分析了南亚热带丘陵赤红壤—龙眼—大气连续体水分运移过程中能量和水流阻力变化及分布规律．结果表明水流在连续体中运移时，其能量主要消耗在由叶部到大气这一环节上，水流阻力主要分布于从叶气孔腔到大气的扩散过程，叶—气系统的水流阻力占连续体水流总阻力的９０．１３％～９８．７１％，叶—气系统的水流阻力是决定连续体中水流速率的主导因素．
According to the field test data, the variation and distribution of energy and water flow resistance in the process of water transport of latosolic-longan-atmosphere continuum in the south subtropical zone were analyzed. The results show that when the water flows in the continuous body, its energy is mainly consumed in the link from the leaf to the atmosphere. The flow resistance is mainly distributed in the diffusion process from the leaf cavity to the atmosphere. The flow resistance of the leaf-air system accounts for continuous The total resistance of the body water flow is 90.13% -98.71%. The water flow resistance of the leaf-gas system is the dominant factor that determines the water flow rate in the continuum.