Preliminary Survey for Evaluation of N Cycling in Oil Palm Plantation on Peat Soil in Malaysia: Spatial Distribution of Dissolved Nitrous Oxide and Nitrate Concentrations in Drainage Water on a Plantation Scale


Kazuya Nishina1, Lulie Melling2, Ryuichi Hirata3, Yoshiyuki Takahashi4, Takashi Onodera1, Kavin Kemudang Anak Kevin5, Joseph WENCESLAUS BIN Waili5, Jicqueline MITCHELL VARONICA Ratai5, Mohd ZULHILMY Abdullah5, Chesles Merikan5, Sakae Toyoda6 and Kotaro Terajima7, (1)NIES National Institute of Environmental Studies, Ibaraki, Japan, (2)Tropical Peat Research Laboratory Unit, Chief Minister's Department, Kuching, Sarawak, Malaysia, (3)National Institute for Environmental Studies, Tsukuba, Japan, (4)Natl Inst Environal Studies, Tsukuba, Japan, (5)Tropical Peat Research Laboratory Unit, Kuching, Malaysia, (6)Tokyo Inst Tech, Yokohama, Japan, (7)Tokyo Institute of Technology, Tokyo, Japan