Ecological study of revegetation using indiginious species on volcanically devastated sites in volcanic islands

2017 Fiscal Year Final Research Report

• Project/Area Number: 15H04507
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Forest science
• Research Institution: University of Tsukuba
• Principal Investigator: KAMIJO Takashi 筑波大学, 生命環境系, 教授 (10301079)
• Co-Investigator(Kenkyū-buntansha): 山路 恵子 筑波大学, 生命環境系, 准教授 (00420076) ; 小川 泰浩 国立研究開発法人森林研究・整備機構, 森林研究部門 森林防災研究領域, 主任研究員 (50353628) ; 田村 憲司 筑波大学, 生命環境系, 教授 (70211373) ; 廣田 充 筑波大学, 生命環境系, 准教授 (90391151)
• Project Period (FY): 2015-04-01 – 2018-03-31
• Keywords: 緑化 / 火山 / 自生種 / 遷移初期植物 / 緑化素材 / 土砂流出 / 栄養塩 / 島

Outline of Final Research Achievements

To develop revegetation technology without using alien plants on volcanically devastated sites, we examined effects of a new revegetation material, the crescent roll type revegetation material on stopping soil erosion and introduction of native plants, and investigated eco-physiology of native pioneer species used for revegetation. Installation of the crescent roll type revegetation material reduced erosion rates (10% to 50%, compared to control) in a rill and facilitate natural invasion of plants. According to the analysis of nutrient use and photosynthesis on 3 pioneer species, all species had relatively high nutrient contents on volcanically devastated sites. These species seem to absorb nutrients efficiently. In addition, Alnus sieboldiana, a nitrogen fixing tree had low resorption efficiency of leaf nitrogen and phosphorous, and Miscanthus condensatus had high photosynthetic nitrogen use efficiency.

Free Research Field

森林生態学