Development of restoration techniques for the re-creation of semi-natural grasslands in riverdykes

2016 Fiscal Year Final Research Report

• Project/Area Number: 26450492
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Environmental agriculture(including landscape science)
• Research Institution: The University of Tokyo
• Principal Investigator: YAMADA Susumu 東京大学, 大学院農学生命科学研究科(農学部), 助教 (30450282)
• Project Period (FY): 2014-04-01 – 2017-03-31
• Keywords: レストレーション / 刈り取り残渣 / 土壌pH / 土壌有効態リン酸 / 優先効果 / 種子散布時期 / セイタカアワダチソウ / チガヤ

Outline of Final Research Achievements

Land managers now attempt to enhance species richness in re-construction of riverdykes. Application of seed-containing plant material was tested for a successful technique to transfer plant species onto revegetation of riverdykes. Location of semi-natural grassland was looked for in total length of 30 km in the dyke of Tone River. Semi-natural grasslands were sparsely but unignorably distributed in the area. The distribution was associated with the absence of re-construction of dyke more than 20 years, and is associated with low soil pH and phosphorous. Effects of litter amounts, dates of harvest and scatter on the seedling emergence of species were tested in field experiments.

Free Research Field

復元生態学