Sustainable Agroforestry-system basing on the Mountain Livestock Production

以山地畜牧业生产为基础的可持续农林业系统

• 批准号: 11460103
• 负责人: IIGUNI Yoshiaki
• 金额: $ 4.42万
• 依托单位: KOCHI UNIVERSITY
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B).
• 财政年份: 1999
• 资助国家: 日本
• 起止时间: 1999 至 2000
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-11460103/
• 关键词: Agroforestry; Zoysia japonica; Soil structure; Contingent Valuation Method by Travel Cost; Biodiversity; Right of common; 硬盤層; 山地畜産; 草原; 低分子有機酸; 土壌微生物

This study focuses on functions of Zoysia-type grassland, because the grassland is the most suitable for realization of sustainable agraforestry-system.Mt. Sanbe is chosen as a field, and soil scientific, ecological and economic approach have been done. The main results are as followings ;1) The result of soil analysis : On the reclaimed Zoysia-type grassland, the soil structure was not enough developed. However, after 20 years, soil physical environment was improved greatly, i.e., well developed root mat on the soil surface and hard pan layer at the depth of 20 cm. Subsequently, a granular structure was developed which caused a great improvement in water permeability, drainage, and moisture retention.2) The result of ecological analysis : Zoysia-type grasslands conserve Pulsatilla cernua and Rhododendron japonica etc.listed in the Red Book and can recover biodiversity. The grasslands, just like paddy field, also create the comfortable landscape and amenity for visiting people.3) The result of economic analysis : first by using "Contingent Valuation Method by Travel Cost, " the value of the landscape of Mt.Sanbe with and without Zoysia-type grasslands is estimated. Second from the difference of the values, the value of Zoysia-type grassland is estimated. The value is about 41.0 billions yen. The grassland is very valuable. The troubles due to the right of common have to be resolved and new supporting system including central government should be constructed for encouraging the development of Zoysia japonica grassland.

本研究重点关注结缕草型草地的功能，因为该草地最适合实现可持续农林系统。选择三贝作为田地，进行了土壤科学、生态和经济研究。主要结果如下： 1）土壤分析结果：复垦的结缕草型草地，土壤结构不够发育。但20年后，土壤物理环境得到了很大改善，土表根垫发达，20厘米深度有硬盘层。随后形成了粒状结构，使透水性、排水性、保湿性得到很大改善。2）生态分析结果：结缕草型草原保存了红皮书所列的白头翁、杜鹃等，可以恢复生物多样性。草原与稻田一样，也为人们的游览创造了舒适的景观和便利设施。 3)经济分析结果：首先采用“旅行费用条件估价法”对有结缕草型草原和无结缕草型草原的三伯山景观价值进行了估算。其次根据价值的差异来估算结缕草型草地的价值。价值约为410亿日元。草原非常有价值。必须解决公权带来的麻烦，建立包括中央政府在内的新的支持体系来鼓励结缕草草原的发展。

项目成果

高橋佳孝: "三瓶山の半自然草地の保全"農業および園芸. 76. 19-26 (2001)

高桥义隆：“三部山半天然草原的保护”农业和园艺76. 19-26 (2001)。

Yoshitaka Takahashi: "Conservation of Semi-natural grasslands in Mt.Sanbe."Agriculture and Horticulture.. 68. 549-558 (1997)

高桥义隆：“三部山半天然草原的保护”。农业和园艺.. 68. 549-558 (1997)