DOI: 10.1016/j.atmosenv.2013.10.028
Scopus记录号: 2-s2.0-84887195352
论文题名: Effect of litter layer on soil-atmosphere N2O flux of a subtropical pine plantation in China
作者: Wang Y ; , Wang H ; , Wang Z ; -L ; , Ma Z ; , Dai X ; , Wen X ; , Liu Y
刊名: Atmospheric Environment
ISSN: 0168-2563
EISSN: 1573-515X
出版年: 2014
卷: 82 起始页码: 106
结束页码: 112
语种: 英语
英文关键词: Litter removal
; Nitrous oxide
; Organic horizon
; Slash pine
; Soil-atmosphere N2O exchange
; Subtropical forest
Scopus关键词: Nitrous oxide
; Organic horizon
; Slash pines
; Soil water content
; Subtropical China
; Subtropical forests
; Subtropical monsoon climate
; Water-filled pore space
; Climate change
; Drought
; Forestry
; Nitrogen oxides
; Soil moisture
; Tropics
; mineral
; nitrous oxide
; water
; climate change
; coniferous forest
; coniferous tree
; emission
; flux measurement
; forest soil
; human activity
; litter
; nitrous oxide
; pollutant removal
; seasonal variation
; soil temperature
; soil water
; subtropical region
; tree planting
; tropical forest
; article
; atmosphere
; China
; controlled study
; environmental factor
; forest soil
; pine
; plant litter
; plantation
; priority journal
; season
; soil temperature
; Drought
; Forest Litter
; Forestry
; Nitrous Oxide
; Pinus Caribaea
; Seasonal Variation
; Tropics
; Waste Disposal
; China
Scopus学科分类: Environmental Science: Water Science and Technology
; Earth and Planetary Sciences: Earth-Surface Processes
; Environmental Science: Environmental Chemistry
英文摘要: Forest soils are important sources for nitrous oxide (N2O), but how the surface litter layer affects these sources is still unclear. Seasonal rainfall in the subtropical monsoon climate provides a unique opportunity to examine soil-atmosphere N2O flux under a wide range of soil water content. We studied this question over 3 years using a litter removal method in a 20-year-old pine plantation (Pinus elliottii) in subtropical China. Annual mean chamber-based soil-atmosphere N2O fluxes of the control (FCK) and litter-free (FLF) treatments were 6.07 and 5.17μgN2Om-2h-1, respectively. Removal of the litter layer reduced 15% of soil N2O emissions, suggesting the mineral soil as the dominant factor that determines soil N2O emissions. Seasonal FCK and FLF were both significantly influenced by water-filled pore space (WFPS) but not by soil temperature (TS). However, FCK and FLF were both correlated with TS during the wet season (January-June) but not during the dry season (July-December). During the wet season, FCK and FLF were 84% and 132% higher than during the dry season, respectively. In contrast, seasonal litter-based N2O fluxes (FCK-LF=FCK-FLF) were not correlated with WFPS and TS. During the dry season, however, a positive relationship was observed for FCK-LF and WFPS. In the context of climate change and human activities, future changes in soil environment and surface litter management will alter the strength of soil N2O emissions of the subtropical pine forests in China. © 2013 Elsevier Ltd. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/81149
Appears in Collections: 气候变化事实与影响
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作者单位: Key Laboratory of Ecosystem Network Observation and Modeling, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China; Tianjin Key Laboratory of Water Resources and Environment, Tianjin Normal University, Tianjin 300387, China
Recommended Citation:
Wang Y,, Wang H,, Wang Z,et al. Effect of litter layer on soil-atmosphere N2O flux of a subtropical pine plantation in China[J]. Atmospheric Environment,2014-01-01,82