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Nitrous oxide flux from dry tropical forests
Author(s) -
Vitousek Peter,
Matson Pamela,
Volkmann Carol,
Maass J. Manuel,
Garcia Georgina
Publication year - 1989
Publication title -
global biogeochemical cycles
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.512
H-Index - 187
eISSN - 1944-9224
pISSN - 0886-6236
DOI - 10.1029/gb003i004p00375
Subject(s) - dry season , wet season , tropical and subtropical dry broadleaf forests , biome , soil water , environmental science , tropics , tropical savanna climate , deciduous , nitrous oxide , flux (metallurgy) , agronomy , hydrology (agriculture) , ecology , agroforestry , biology , chemistry , ecosystem , soil science , geology , geotechnical engineering , organic chemistry
Fluxes of nitrous oxide were determined in several sites in drought‐deciduous tropical forest, an extensive but little‐studied biome. N 2 O‐N fluxes from eight sites within intact Mexican forest averaged 0.91 ng cm −2 h −1 during the wet season; they were virtually absent in the dry season. Two subsistence maize fields yielded increased soil N 2 O‐N fluxes, while five pastures were more variable. Watering during the dry season caused a substantial but short‐lived pulse of N 2 O. Similar fluxes were observed in less‐intensive sampling of dry‐forest sites in Hawaii and Costa Rica. Overall, N 2 O fluxes from soils of dry tropical forests appear to be similar to those from moist tropical forests during the wet season and very low during the dry season.