A basic study for measurements of in situ soil enzymatic activities

2014 Fiscal Year Final Research Report

• Project/Area Number: 24658200
• Research Category: Grant-in-Aid for Challenging Exploratory Research
• Allocation Type: Multi-year Fund
• Research Field: Irrigation, drainage and rural engineering/Rural planning
• Research Institution: The University of Tokyo
• Principal Investigator: DOI Ryoichi 東京大学, 農学生命科学研究科, 助教 (20587125)
• Project Period (FY): 2012-04-01 – 2015-03-31
• Keywords: リグノセルロース分解活性 / 土壌微生物 / 原位置土壌酵素 / 土壌水分 / 開発適正技術

Outline of Final Research Achievements

A method for in situ soil enzyme activity measurement with neither the destruction of soil structure nor the alternation of soil environmental components such as pH was examined. Changes in bending strength of bamboo barbecue skewer were determined by inserting the bamboo skewer into a field soil collected in Tochigi prefecture. The soil-skewer system underwent one of the following three treatments, namely, water saturation, water-submerging, and two saturation-to-dry cycles within two weeks. The saturation-to-dry treatment resulted in the most significant reduction of bending strength, hence the applicability of the current method to activity measurements of in situ soil enzymes was indicated.

Free Research Field

土壌生物