An Geographical Study on Conservation of Farm Ponds

首先，作者用三个时代的国家分类帐厘清了二战后农场池塘生存数字的变迁。因此，小型农场池塘减少很多，而大型农场池塘增加了。总的来说，农场池塘减少了。在日本农用池塘最多的兵库县，城市化程度最高的濑户内海地区农用池塘被废弃或改造。接下来，她检查了结果，并坚持了大多数关于农场池塘的研究的问题。由于目前对农场池塘保护的研究很少，因此她的研究具有一定的意义。日常和持续的维护和养护是养鱼塘最重要的。但是，负责这些维护和保养工作的村庄社区变得越来越弱，结果这些工作被忽视了。她在兵库县农场池塘最多的神户市展示了这一趋势。对大阪府农场池塘养护新措施的实际情况进行了调查，并提出了评价和存在的问题。她研究了农场池塘的多方面功能。接下来，她通过在静冈县和爱知县的实地调查，证明了应用其多方面功能的保护措施对农场池塘是非常有效的。此外，她还指出，与农场池塘有关的农民、居民和地方政府的合作工作对农场池塘的保护非常重要。

First the author clarified transition of existence figure of farm ponds after the World War II by national ledgers at three ages. Consequently, small farm ponds decreased very much but large ones increased. Totally, farm ponds decreased. In Hyogo Prefecture where the most farm ponds locate in Japan, farm ponds were disused or altered at most urbanized area Seto Inland Sea area. Next she checked results and persisted problems of most of all studies on farm ponds. Since there are few studies on conservation of farm ponds, she shows a significance of her study. Daily and continuous maintenance and keeping is the most important for conservation of farm ponds. But village communities which operate those maintenance and keeping works became weaker, with the results that these works became neglected. She demonstrated this tendency in Kobe City where the most farm ponds located in Hyogo Prefecture. Also she investigated into the actual conditions of new maintenance measures of farm ponds in Osaka Prefecture and showed its evaluation and problems. She studied on manysided functions of farm ponds. Next she showed that conservation measures applied their manysided functions are very effective for farm ponds by field surveys in Shizuoka Prefecture and Aichi Prefecture. Besides she pointed out that cooperative works of farmers, inhabitants and local governments related to farm ponds for maintenance and keeping are very important for conservation of farm ponds.