Agriculture harmonized with environment in tropical peatland - Evaluation of function as a carbon sink and improvement in production techniques for sago palm cultivation

2014 Fiscal Year Final Research Report

• Project/Area Number: 23405047
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Single-year Grants
• Section: 海外学術
• Research Field: Environmental agriculture(including landscape science)
• Research Institution: Nagoya University
• Principal Investigator: WATANABE Akira 名古屋大学, 生命農学研究科, 教授 (50231098)
• Co-Investigator(Kenkyū-buntansha): ANDO Ho 山形大学, 農学部, 教授 (90005661)
• Co-Investigator(Renkei-kenkyūsha): KAKUDA Ken-ichi 山形大学, 農学部, 准教授 (70241726) ; SASAKI Yuka 山形大学, 農学部, 助教 (40375332)
• Project Period (FY): 2011-04-01 – 2015-03-31
• Keywords: 環境調和型農林水産 / 二酸化炭素排出削減 / 熱帯低湿地 / 炭素循環 / 熱帯農業 / 泥炭

Outline of Final Research Achievements

Carbon (C) budget and dynamics of nitrogen (N) in sago palm gardens established on a tropical peat soil were investigated in Mukah, Sarawak, Malaysia. New fertilization techniques were also tested. The rate of supplying litter C from sago palm and the mineralization rate of sago litter C, the increasing rate of biomass C with sago growth, weed biomass C, and C emission from soil were monitored, and the size of sago palm and peat soil as C pools was estimated. Although the sum of C input was smaller than that of C output, it was suggested that the field cane act as C sink by regulating the period of transplantation. The proportion of fertilized N used by sago palm was small even in the initial growth stage, while a large amount of N fixation and soil N mineralization maintained the plant production. The application of slow release fertilizer to the nursery improved the sago growth after transplantation.

Free Research Field

物質循環学