DEVELOPMENT OF A GENERAL ENVIRONMENTAL INDEX FOR CONSERVATION STRATEGY OF MOUNTAINOUS AREAS

目前，人们从耕地和林地的生态功能角度认识山区的重要意义。本研究正是基于这样的背景，以长野县千佐县丸古镇、竹石村、和田村、长户镇为例，探讨了山区综合环境指数的发展，通过对滑坡、防洪、防蚀、大气污染控制的评价，利用地理信息系统中的叠加技术，构建了一个表达国土保护功能的综合指数。采用问卷调查的方法，得出了调查区居民对聚落的意见综合环境评价，并以反映国土保护功能的综合指数与以居民意见为单位的综合环境评价相结合的方法，构建了综合环境指数。认为这是反映山区健康状况的一项指标。

AT PRESENT, THE SIGNIFICANCE OF MOUNTAINOUS AREAS IS RECOGNIZED FROM THE VIEWPOINT OF ECOLOGICAL FUNCTION OF FARMLAND AND WOODLAND. IN THIS RESEARCH, BASED ON SUCH A BACKGROUND, DEVELOPMENT OF A GENERAL ENVIRONMENTAL INDEX WAS INVESTIGATED IN ORDER TO CONSERVE MOUNTAINOUS AREAS AS A CASE STUDY OF MARUKO TOWN, TAKESHI VILLAGE, WADA VILLAGE AND NAGATO TOWN IN CHIISAGATA COUNTY, NAGANO PREFECTURE.BY EVALUATING LANDSLIDE PREVENTION, FLOOD PREVENTION, EROSION PREVENTION AND AIR POLLUTION CONTROL, A SYNTHETIC INDEX EXPRESSING FUNCTIONS OF NATIONAL LAND CONSERVATION WAS CONSTRUCTED BY MEANS OF OVERLAY TECHNIQUES IN GEOGRAPHIC INFORMATION SYSTEM. A GENERAL ENVIRONMENTAL EVALUATION BY RESIDENTS' OPINIONS FOR SETTLEMENT IN THE INVESTIGATED AREA WAS DERIVED BY THE USE OF A QUESTIONNAIRE SURVEY.BY MEANS OF INTEGRATING A SYNTHETIC INDEX EXPRESSING FUNCTIONS OF NATIONAL LAND CONSERVATION AND A GENERAL ENVIRONMENTAL EVALUATION BY RESIDENTS' OPINIONS AS A UNIT OF SETTLEMENT, A GENERAL ENVIRONMENTAL INDEX WAS CONSTRUCTED. IT IS CONSIDERED THAT THIS IS A INDEX EXPRESSING SOUND CONDITION OF MOUNTAINOUS AREAS.