This study clarified the meanings and the planning method of environment in the latest Structure Plans of major four Scottish city regions: Glasgow and the Clyde Valley, Edinburgh and the Lothian, Dundee and Angus, and Aberdeen and Aberdeenshire, which keep rich natural and built heritages. As a result, it was confirmed that the Scottish Structure Plan is one of statutory frameworks for supporting the rich environmental assets because of the following reasons. 1) Planning philosophy: the importance of the policies related to environment, and the plan as means to lead good developments that contribute toward changing environmental resources into environmental assets. 2) Planning method that is supporting 1): the importance of the plan context (clear SP's rolls and responsibilities), and specifying the basic conditions that enable to change environmental resources into environmental assets by the practical policies and key diagram which prepare concrete reasons and assessment criteria for development control.
To convert green spaces in city as environmental resources to environmental aseets, it is important not only to conserve them but also to make the best use of them.By these use citizens realize the more value of greens. But to make these use system,it is important to make role sharing and collabrative relationships between citizens and rocal government. 'Satoyama' consevation activities and Open Garden activities in Japan, and community gardens in U.S. give suggestion to make them up.
In order to enhance the social value of landscape, formation or creation of new landscape has been mainly pursued in the field of landscape architecture or else. In addition, it should be also significant for realization of the cause above to encourage the discovery and popularization of new perspective of value in existing landscape. This property is quite remarkable in "technoscape" which is formed principally with functional or economical reasons, without aesthetic reasons, and it will be the useful example for the quest of the method of discovery and popularization. This study defines two ways of approach to "technoscape", (1) sign of appreciation of new modern age and (2) new formal interest, and exemplifies the cases of observers' subsequent discovery or interpretation of "technoscape" value after its formation, such as towers of electric power plant in Tokyo, Yokosuka and smokestack for mine industry in Hitachi, Japan. Those phenomena are taken as spontaneous discovery of "technoscape" value by civilians and as cognition of existing landscape as social stock. In the end, we discuss on significance of renovation of existing structures for other use and implementation of events to enlighten people the value of landscape to enhance its social meaning as regional stock.