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Environmental Conservation and Agricultural land Use in Toyama Valley, Upper Watershed of Tenryu River

天龙川上游流域富山溪谷的环境保护和农业用地利用

基本信息

批准号：
09660256
负责人：
HOSHIKAWA Kazutoshi
金额：
$ 2.05万
依托单位：
SHINSHU UNIVERSITY
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (C)
财政年份：
1997
资助国家：
日本
起止时间：
1997 至 1999
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-09660256/
关键词：
Tenryu River Watershed Agricultural Village Traditional Agro-technique Abandoned Agricultural Field Soil Conservation Agriculture in Mountainous Area 耕地放棄

项目摘要

1. Simoguri, typical agricultural village in Toyama valley, was selected as a studying area. There is Simoguri in the mountainous area and is an upland farm village with steep and complicated topology. We observed meteorological factors (air temperature, soil temperature, precipitation, and solar radiation) and measured soil erosion damages at the some cropping fields. The relationships between farming method and agricultural fields, such as cultivating crop, cropping calendar and soil conservation methods, were examined.2. Our analysis of the topo-meteorological factor at the study area demonstrates that Simoguri has relatively favorable climate conditions on the cropping production but tends to receive damage of the soil because of it's being on the steep southern slope of a mountain.3. Although the agriculture at the study area is a subsistence farming with traditional technique which is multi crop cultivation without mechanization, there is little damage of the soil on the cropping field. Consequently, the traditional cropping system and technique take an important role in the soil conservation and the environmental management.4. According to the agricultural census, the abandoned agricultural field increases in Toyama Valley. This problem in mountain region becomes worse due to the progress of depopulation and the increase of old person in the last twenty years.

1. 选取富山河谷典型的农业村落西摩古里作为研究区。锡莫古里位于山区，是一个地势陡峭、地形复杂的山地农庄。利用气象因子（气温、土壤温度、降水和太阳辐射）观测了部分农田的土壤侵蚀危害。考察了耕作方式与农田的关系，如种植作物、种植日历和土壤保持方法。研究区地形气象因子分析表明，西摩古里具有相对有利的气候条件，但由于地处陡峭的南坡，土壤容易受到破坏。虽然研究区农业为自给农业，采用传统的无机械化的多作物种植技术，但对农田土壤的破坏很小。因此，传统的种植制度和技术在土壤保持和环境管理中发挥着重要作用。根据农业普查，富山谷的废弃农田在增加。近二十年来，由于人口减少的进程和老年人口的增加，山区的这一问题变得更加严重。