A study on change of vegetation in sediment deposition areas of check dams and prediction of its succession

淤地坝淤积区植被变化研究及演替预测

• 批准号: 14560125
• 负责人: ISHIKAWA Yoshiharu
• 金额: $ 1.66万
• 依托单位: National University Corporation Tokyo University of Agriculture and Technology (2003-2004)Kyoto Prefectural University (2002)
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2002
• 资助国家: 日本
• 起止时间: 2002 至 2004
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-14560125/
• 关键词: Check dam; Sediment deposition area; Plant succession; Rate of forestry area; Soil; Micro-topography; 砂防堰堤; 治山堰堤; 植生; 回復; 自然再生; 六甲山系

The Rokko Mountains located in the southern part of Hyogo Prefecture was chosen as this study area. Change of vegetation in sediment deposition areas of check dams which were constructed by the Ministry of Land, Infrastructure and Transport from 1928 to 1999 was surveyed by aerial photograph interpretation. Aerial photographs taken in 1969,1979,1989 and 1999 and topographic maps drawn on a scale of one to twenty hundred were used for investigation of vegetation in sediment deposition areas. The years after completion of check dams are smaller, the regeneration are faster. As the size of deposition areas increases, the rate of forestry area tends to decrease. Because if the deposition areas are larger, changes of river bed and water course occur frequently, and the areas suitable for grassland increase.Field investigation was conducted at the 17 check dams in Wachi Town and Ayabe City, Kyoto Prefecture and the Rokko Mountains. At the deposition areas, kinds of plants, micro-topography, types of soil and insolation were surveyed. As the grain size of soil is larger and water holding ability of soil in the deposition areas is weaker than original slope soil, the soil in the deposition areas tends to be dry compared with original slope soil The soil fertility is also lower than original slope, the pace of plant succession is slower. A model of plant succession at the deposition areas was proposed based on this research results.

位于兵库县南部的六甲山脉被选为研究区域。对1928年至1999年国土交通省修建的淤地坝淤积区植被变化进行了航空摄影解译调查。利用1969年、1979年、1989年、1999年拍摄的航拍照片和一到两百比例尺的地形图，对沉积区植被进行了调查。淤地坝建成后的年限较小，再生速度较快。随着沉积面积的增加，林地面积率呈下降趋势。因为如果沉积面积较大，河床和水道的变化会频繁发生，适合草地增加的区域。对京都府和智町和绫部市的17座拦河坝以及六甲山脉进行了实地调查。在沉积区，对植物种类、微地形、土壤类型和日照进行了调查。由于沉积区土壤的粒径较大，持水能力较原坡土弱，沉积区土壤较原坡土趋于干燥，土壤肥力也低于原坡，植物演替的速度较慢。基于这一研究结果，提出了沉积区植物演替模型。

项目成果

Change of vegetation cover area in the deposition areas of check dams in the Rokko Mountains

六甲山淤地坝淤积区植被覆盖面积变化

• 发表时间: 2004
• 期刊: Proceedings of the Annual Meeting of the Japan Society of Erosion Control Engineering JSECE 40
• 作者: ISHIKAWA;Yoshiharu
• 通讯作者: Yoshiharu

砂防・治山堰堤堆砂地における植生変化について

关于侵蚀控制/保护坝沉积区的植被变化

• 发表时间: 2004
• 期刊: 平成16年度砂防学会研究発表会概要集 JSECE 40
• 作者: 三好 岩生

Plant succession in the deposition areas of check dams

淤地坝沉积区的植物演替

• 发表时间: 2004
• 期刊: Proceedings of the Annual Meeting of the Japan Society of Erosion Control Engineering JSECE 40
• 作者: MIYOSHI;Iwao
• 通讯作者: Iwao

六甲山系内の堰堤堆砂地における植生被覆面積の変化

六甲山水库沉积区植被覆盖面积变化

• 发表时间: 2004
• 期刊: 平成16年度砂防学会研究発表会概要集 JSECE 40
• 作者: K.Yokota;石川 芳治
• 通讯作者: 石川 芳治