Evaluation of peat soil decomposition rate under various levels of soil

Research Project

Project/Area Number	24580350
Research Category	Grant-in-Aid for Scientific Research (C)
Allocation Type	Multi-year Fund
Section	一般
Research Field	Irrigation, drainage and rural engineering/Rural planning
Research Institution	Utsunomiya University
Principal Investigator	IIYAMA Ippei 宇都宮大学, 農学部, 准教授 (50450276)
Project Period (FY)	2012-04-01 – 2016-03-31
Project Status	Completed (Fiscal Year 2015)
Budget Amount *help	¥5,330,000 (Direct Cost: ¥4,100,000、Indirect Cost: ¥1,230,000) Fiscal Year 2014: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000) Fiscal Year 2013: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000) Fiscal Year 2012: ¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000)
Keywords	泥炭土壌 / 泥炭湿地
Outline of Final Research Achievements	This study aimed at quantifying peat soil decomposition rates under various levels of moisture and gaseous O2 concentration in peat soil. A simple CO2 gas analyzing system for soil gas samples was developed. Depth profiles of soil water/air phase that can possibly occur in-situ were numerically identified by using the measured soil moisture characteristic curves and unsaturated hydraulic conductivities. Some results of peat soil incubation suggested that the amount of emitted CO2 may become 25 [tCO2 ha^-1] during two months with the groundwater table level of 100 cm in depth.

Report

(5 results)