Studies on the construction of a system of water management in the greening process of land.

为了构建土地绿化过程中的水管理体系，在两年多的时间里进行了多项研究。所得结果总结如下：1。容器的形状和体积对牧野泽科娃幼树的生长有较大的影响。通过对幼树气孔阻力分布的测量，阐明了气孔阻力与光合光子通量密度的关系。单树温度高于植物群落温度。利用改进的Makkink太阳辐射法估算了单树条件下地表蒸散量从单一群落到植物群落的过渡过程。在Nakayama等人（1991）构建的土壤水分估算模型的基础上，提出了土地绿化过程中的水分管理系统。

To constract a system of water management in the greening process of land, several studies were conducted over more than two years. Obtained results are summarized as follows :1.The growth of young tree of Zelkova serrata Makino was influenced greatly by shape and volume of container.2.By mearsuring of the distribution of stomatal resistance all over a young tree, it was clarified that the stomatal resistance depended upon the photosynthetic photon flux density.3.The temperature of a single tree was higher than that of plant community.4.Evapotranspirations from the surfaces under the conditions of a single tree, a transition process from single to plant community were estimated by using the modified Makkink's solar radiation methods.5.A system of water management in the greening process of land was proposed on the basis of the estimating model of soil water that was constracted by Nakayama et al. (1991).