ABSTRACT：In this study, the effects of pH and seawater were investigated for the ability for phosphate adsorption by column experiments. From the column experiment results, it was found that the ability for phosphate adsorption was mostly influenced by pH of solution. For the seawater, the effect of humic acid was suggested rather than that of other anion. The adsorbed amount of phosphate also decreased with increasing pH of solution. The removal rates decreased to the minimum value with experimental time and then minimum values were maintained for a long time. The more suitable pH value of solution was provided with the aeration method.

ABSTRACT: There are a lot of planted trees in the coastal zone. The trees in the coastal zone were planted for storm, high tide and sand motion. The trees are also used as sunshade by swimmers at summer season. However, the protection characteristics for the erythema action ultraviolet radiation of the tree did not clear. This research was aimed to know that how decrease erythema action ultraviolet radiation by the trees. We carried out the measurements of spectral radiance distribution under the trees standing single and group. The radiances of sky element at attitude and direction were measured. From measurement results, the radiances of each sky element were cleared. The erythema action ultraviolet radiance can calculate using the results. After that, tree model with the erythema action ultraviolet radiation is proposed.

ABSTRACT : It has been considered that most of the terrestrial water and contained materials are supplied into the ocean through the rivers. However, recent studies show that the submarine groundwater discharge (SGD) is also significant as the route of water and materials from the land to the ocean. In order to evaluate the influences of SGD on the coastal water environment, it is important to investigate the amount of SGD flux into the sea as well as the behaviour of discharged water and materials in the coastal water. In the present study, the total SGD flux is estimated by the budget analysis of the target sea area, in which a parameter for water exchange between the coastal zone and the ocean is calculated by means of a numerical simulation of water movement and a dynamic budget model. The behaviour of discharged groundwater is also investigated by means of hydraulic experiments and numerical simulations using non-hydrostatic model. It is found that the early-stage behaviour of the discharged submarine groundwater as buoyant plume could be categorized into three types due to the ratio of discharge velocity to the background horizontal current velocity.

ABSTRACT: Under the background of growing recognition of the integrated coastal zone management and the unified management system of seas areas in Japan, groping toward the effective way of the coastal zone management, especially toward the definition that “by whom and how” has become very important. The objective of this study is to discuss the fishermen’s role in the coastal zone management, under the actual situation of the sea-use which decreasing in fishery use and increasing in recreational use, through a case study of Hiratsuka City, Kanagawa Prefecture. As a result, being a successful management group of the coastal zone management requires three necessary conditions as follows; an ability to communicate between various users, an ability to construct common objective and value among the users, and having the desire to continue to the management. Moreover, it’s also been clarified in this paper that it is essential for the fishermen’s group to acquire the legitimacy and to make every effort to maintain the group’s vitality, to successfully play the role in harmonizing the sea utilization.

ABSTRACT: The objective of this study is to clarify the actual conditions of the coastal zone management in china based on the “Law of the people’s Republic of China on the Administration of the Use of Sea Areas”, through a case study of Qingdao city, Shandong province. Qingdao has been taking a leading role in coastal zone management since early 90s and has also been designated for one of the four model districts in china since the establishment of above-mentioned law in 2002. It has been understood in this paper that the coastal zone management in china today is being conducted mainly under the market mechanism for improving the efficiency of the management, but still a number of problems left in fairness and efficiency of its execution.

ABSTRACT : This study contrasted the hydraulic model facility of Japan versus America from viewpoint of environmental education. The result of the study shows that regardless of environmental education program and governing body were different. And, the hydraulic model facility in Japan has a possibility to provide an opportunity of environmental education.

ABSTRACT: Ultraviolet radiation damage human skin. The baby and infant must not receive excessive ultraviolet radiation. The baby and infant cannot prevent ultraviolet radiation for own intention. Baby and infant are easy to bathe in ultraviolet radiation as there are few shades in the beach. The parent must prevent the ultraviolet radiation exposure of the baby and infant. This study followed the ultraviolet radiation exposure of babies and infants in the beach. The study consists of action investigation of the baby and the questionnaire. I propose anti-ultraviolet radiation methods with results of research.