Recently, demands for recreational use of suburban areas have been increasing rapidly. These increasing demands require new public investments and management systems, according to the amount of demands, the spatial extent of demands. It is necessary to develop indices to evaluate these characteristics of demands. This paper aims firstly to estimate Gravity-type residents' trip model, and secondary to evaluate recreational value of suburban areas based on the model.
According to this model, extension of the accessible area, and the amount of visitors are estimated. The first is defined as the distance from a recreational to a resident area where the trip probability equals to 1%, and the second is defined as integral calculus of the product of trip probability and population.
This model is applied to seven recreational areas in Kanagawa prefecture. The data were obtained from questionnaire survey in 160 points. Answers available were 4683 sheets. Regression analysis showed that the estimation based on Gravity model well fitted with the data. After estimating the parameters of the model, the indices were calculated for each forest. These results show the accessibility is an important factor of recreational demands.

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Questionnaire survey is one of the most important and frequently used methods to explicate social opinion. It is also frequently used for explicating social evaluation of a total landscape of an area, but the necessity of designating and presenting sites to be evaluated in the qiestionnaire is one of the problems that should be discussed for questionnaire survey of a total landscape.
In this study we examined the problem by practicing two types of question, a question with site designation and a question without it, in a same questionnaire and compared their results. By the study we assumed that it is necessary to designate and present sites in the questionnaire.

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The drastic decrease of thatched roofs means fundamental changes in the traditional rural landscape and serious reduction of its visual amenities. This paper intends to provide the necessary information for protecting and maintaining thatched roofs. The combined field and questionaire survey was carried out in Miyama cho (Kyoto pref.) in 1986, where we can still find many thatched roofs. Ten settlements (463 households) were chosen from 57 settlements (about 1800 households) as samplings.
Though thatched roofs accounted for 74 percent of the total samplings in the 1945's, the figure has declined by 24 percent in 1986, that is, many of them have changed into galvanized iron or tiled roofs. This is partly because of the difficulty of maintaining the traditional custom to prepare and store a prodigious amount of eularia (Miscanthus sinensis) for rethatching.
On the other hand, however, many people living under thatched roof say that they are reluctant to change the present roof form in the future in spite of high maintenance cost on the ground of many merits which thatched roof offers in the living. Skillful thatchers are also reducing. Now in this district there are only four thatchers and besides they have no successor.
Consequently, what are now most necessary for conservation of thatched roofs as a vital feature of the traditional village landscape are as follows:
1) Transmission of thaching techniqes.
2) Supply of material and manpower, in receiving a new overcoat of thatch.
3) Financial assistance for materializing these policies.
4) Management of eularia grassland.

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