2008
DOI: 10.1029/2007jd009195
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Methane uptake responses to nitrogen deposition in three tropical forests in southern China

Abstract: Methane (CH4) uptake responses to simulated nitrogen (N) deposition in a mature forest, a rehabilitated forest and a disturbed forest in tropical China were studied. The experiment was designed with four N treatment levels (three replicates) (0, 50, 100, 150 kg N ha−1 a−1 for Control, Low‐N, Medium‐N, and High‐N treatment, respectively) in the mature forest, but only three levels (Control, Low‐N, and Medium‐N) in the disturbed and rehabilitated forests. Between October 2005 to September 2006, soil CH4 flux was… Show more

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Cited by 72 publications
(107 citation statements)
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References 78 publications
(126 reference statements)
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“…The subtropical plantation forest soils exhibited a sink of atmospheric CH 4 with a mean annual CH4 uptake of 42.3 ± 0.15 g C m −2 h −1 , which is very close to those observed from the subtropical forests of southern China (41.1 g C m −2 h −1 , Zhang et al, 2008b) and the tropical rain forest in Australia (46.67 g C m −2 h −1 , Rowlings et al, 2012). In general, N addition can strongly inhibit CH 4 oxidation in forest soils through the following mechanisms: the competitive inhibition of CH 4 (Bodelier, 2011).…”
Section: Effects Of Simulated N Deposition On Soil Ch 4 Uptakesupporting
confidence: 55%
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“…The subtropical plantation forest soils exhibited a sink of atmospheric CH 4 with a mean annual CH4 uptake of 42.3 ± 0.15 g C m −2 h −1 , which is very close to those observed from the subtropical forests of southern China (41.1 g C m −2 h −1 , Zhang et al, 2008b) and the tropical rain forest in Australia (46.67 g C m −2 h −1 , Rowlings et al, 2012). In general, N addition can strongly inhibit CH 4 oxidation in forest soils through the following mechanisms: the competitive inhibition of CH 4 (Bodelier, 2011).…”
Section: Effects Of Simulated N Deposition On Soil Ch 4 Uptakesupporting
confidence: 55%
“…The subtropical plantation forests are vulnerable to increased N deposition due to single community structure and barren soil fertility. Previous studies show that simulated NH 4 NO 3 inputs to the subtropical forests significantly inhibit litter decomposition and soil CO 2 emission (Fang et al, 2007;Mo et al, 2008), decrease CH 4 uptake (Zhang et al, 2008b(Zhang et al, , 2012b, and increase gaseous N emission (N 2 O, NO, and N 2 ) (Zhang et al, 2008a(Zhang et al, , 2009 (Sheng et al, 2014). The contrasting effects of N cumulation on root autotropical respiration and microbial heterotropical respiration dominate the reponses of soil CO 2 flux to N addtion .…”
Section: Introductionmentioning
confidence: 99%
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“…However, CH 4 uptake at our site was significantly inhibited by N addition, and the decrease in soil CH 4 uptake was higher than that reported for forest soils in South China [22][23] despite similar N addition levels. This result indicates that different responses of soil CH 4 uptake to N addition may be due to climate conditions, vegetation, soil type etc.…”
Section: Effect Of N Deposition On Soil Ch 4 Uptakecontrasting
confidence: 40%
“…The key limitation of the N effect approach adopted in the R99 and C07 models is the generalization of N inhibitory effects across different agricultural areas, crops and types of land management, which results in a homogeneous and excessive attenuation of CH 4 oxidation rates. In contrast, the MeMo r N parameterization employs a more conservative r N factor and a realistic regional distribution, which is based upon observational data that are consistent with recent studies reporting that high rates of N deposition (10 kg N ha −1 yr −1 ) can reduce soil uptake of atmospheric CH 4 by ∼ 8.6 % (Fang et al, 2014;Zhang et al, 2008). Direct application of fertilizers at more extreme rates (> 300 kg N ha −1 yr −1 ) can entirely eliminate uptake of atmospheric CH 4 by agricultural soil (Veldkamp et al, 2001).…”
Section: Regional Ch 4 Uptake By Soilsmentioning
confidence: 67%