Questionnaire Survey on Current Status of Ecosystem Conservation in Land Improvement Projects to be Carried Out by Prefectures

Abstract

We conducted a questionnaire survey of 46 prefectures to know the current status of ecosystem conservation for land improvement projects. We revealed that there was a bias against introduction procedures of ecosystem conservation measures. In addition, many facilities were built with poor preliminary studies for their appropriate distances or numbers so that the efficiency of the facilities remained uncertain in many cases. Subsequently, monitoring studies on ecosystem conservation measures, which were required to evaluate the efficiencies of facilities, tended to be more conducted before the project acception than after the acception. The method of the monitoring studies seemed to be used with little discussion and examination.