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

目前，从农林生态功能的角度认识山区的重要性。本研究以长野县千代田县的丸子町、武志村、和田村、长门町为例，基于这样的背景，提出了以保护山区为目的的综合环境指标的开发，通过对滑坡预防、洪水预防、侵蚀预防和空气污染控制的阐述，利用地理信息系统中的叠加技术，建立了一个表达耕地保护功能的实用指数。通过问卷调查，得出了居民对库区移民安置的总体环境评价，并将反映库区土地保护功能的生态指标与居民对移民安置的总体环境评价作为一个居住单元进行整合，构建了综合环境指标。这被认为是一个反映山区健康状况的指标。

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.