globalchange  > 气候减缓与适应
DOI: 10.1007/s10533-017-0348-3
Scopus记录号: 2-s2.0-85020410024
论文题名:
Quantifying the contribution of land use to N2O, NO and CO2 fluxes in a montane forest ecosystem of Kenya
作者: Arias-Navarro C.; Díaz-Pinés E.; Zuazo P.; Rufino M.C.; Verchot L.V.; Butterbach-Bahl K.
刊名: Biogeochemistry
ISSN: 0168-2563
EISSN: 1573-515X
出版年: 2017
卷: 134, 期:2018-01-02
起始页码: 95
结束页码: 114
语种: 英语
英文关键词: Carbon dioxide ; Land use change ; Nitric oxide ; Nitrous oxide ; Soils ; Tropical forests
Scopus关键词: acidification ; air-soil interaction ; biogeochemical cycle ; carbon dioxide ; carbon flux ; forest ecosystem ; land use ; montane forest ; nitric oxide ; nitrous oxide ; soil moisture ; trace gas ; tropical forest ; Kenya ; Mau Forest ; Eucalyptus
英文摘要: Increasing demand for food and fibre by the growing human population is driving significant land use (LU) change from forest into intensively managed land systems in tropical areas. But empirical evidence on the extent to which such changes affect the soil-atmosphere exchange of trace gases is still scarce, especially in Africa. We investigated the effect of LU on soil trace gas production in the Mau Forest Complex region, Kenya. Intact soil cores were taken from natural forest, commercial and smallholder tea plantations, eucalyptus plantations and grazing lands, and were incubated in the lab under different soil moisture conditions. Soil fluxes of nitrous oxide (N2O), nitric oxide (NO) and carbon dioxide (CO2) were quantified, and we approximated annual estimates of soil N2O and NO fluxes using soil moisture values measured in situ. Forest and eucalyptus plantations yielded annual fluxes of 0.3–1.3 kg N2O–N ha−1 a−1 and 1.5–5.2 kg NO–N ha−1 a−1. Soils of commercial tea plantations, which are highly fertilized, showed higher fluxes (0.9 kg N2O–N ha−1 a−1 and 4.3 kg NO–N ha−1 a−1) than smallholder tea plantations (0.1 kg N2O–N ha−1 a−1 and 2.1 kg NO–N ha−1 a−1) or grazing land (0.1 kg N2O–N ha−1 a−1 and 1.1 kg NO–N ha−1 a−1). High soil NO fluxes were probably the consequence of long-term N fertilization and associated soil acidification, likely promoting chemodenitrification. Our experimental approach can be implemented in understudied regions, with the potential to increase the amount of information on production and consumption of trace gases from soils. © 2017, Springer International Publishing Switzerland.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/83258
Appears in Collections:气候减缓与适应
气候变化事实与影响

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作者单位: Institute of Meteorology and Climate Research, Atmospheric Environmental Research (IMK-IFU), Karlsruhe Institute of Technology (KIT), Kreuzeckbahnstr. 19, Garmisch-Partenkirchen, Germany; Center for International Forestry Research (CIFOR), P.O. Box 30677, Nairobi, Kenya; Mazingira Centre, Environmental Research and Educational Facility, International Livestock Research Institute (ILRI), P.O. Box 30709, Nairobi, Kenya; Institute of Soil Research, University of Natural Resources and Life Sciences (BOKU), Peter-Jordan-Strasse 82, Vienna, Austria; Lancaster Environment Centre, Lancaster University, Lancaster, United Kingdom; International Center for Tropical Agriculture (CIAT), Km 17, Recta Cali–Palmira CP 763537, Apartado Aéreo 6713, Cali, Colombia

Recommended Citation:
Arias-Navarro C.,Díaz-Pinés E.,Zuazo P.,et al. Quantifying the contribution of land use to N2O, NO and CO2 fluxes in a montane forest ecosystem of Kenya[J]. Biogeochemistry,2017-01-01,134(2018-01-02)
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