Nitrogen mineralization, nitrification and denitrification potential in contrasting lowland rain forest types in Central Kalimantan, Indonesia

R.R.E. Vernimmen, H.A. Verhoef, J.M. Prof. dr. Verstraten, L.A. Bruijnzeel, N.S. Klomp, H.R. Zoomer, P.E. Wartenbergh

Research output: Contribution to JournalArticleAcademicpeer-review

Abstract

Nitrogen mineralization and denitrification potential in litter were measured during a dry and a wet period in a Bornean Lowland Evergreen Rain Forest (LERF) and two nearby Heath Forests (HF) of contrasting stature. Nitrification was very low or non-existent in all forest types and ammonification was the major constituent of nitrogen (N) mineralization. Rates of net N mineralization in the HFs on infertile sandy soils were lower than in the LERF on a more nutrient-rich clay soil or other LERFs, both during dry and wet conditions. We attribute the differences to the lower litter quality in the HFs compared to LERF. When dissolved organic nitrogen (DON-N) was included, N uptake was the same (15-17 μg g
Original languageEnglish
Pages (from-to)2992-3003
JournalSoil Biology and Biochemistry
Volume39
DOIs
Publication statusPublished - 2007

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