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Nitrous oxide flux following tropical land clearing
Author(s) -
Luizão Flávio,
Matson Pamela,
Livingston Gerald,
Luizão Regina,
Vitousek Peter
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/gb003i003p00281
Subject(s) - deforestation (computer science) , clearing , environmental science , flux (metallurgy) , pasture , tropics , clearance , nitrous oxide , ecosystem , amazon rainforest , tropical forest , atmospheric sciences , agroforestry , forestry , geography , ecology , biology , chemistry , physics , medicine , organic chemistry , finance , computer science , economics , urology , programming language
The importance of seasonal cycles of N 2 O flux from tropical ecosystems and the possibility that tropical deforestation could contribute to the ongoing global increase in N 2 O concentrations were assessed by measuring N 2 O flux from forest, cleared land, and pasture over an annual cycle in the central Amazon. A pasture that had been converted from tropical forest had threefold greater annual N 2 O flux than a paired forest site; similar results were obtained in spot measurements in other pastures. If these results are general, such tropical pastures represent a globally significant source of increased N 2 O.