Effect of litter layer on soil-atmosphere N2O flux of a subtropical pine plantation in China
Wang, YD; Wang, HM; Wang, ZL; Ma, ZQ; Dai, XQ; Wen, XF; Liu, YF
2014
发表期刊ATMOSPHERIC ENVIRONMENT
ISSN1352-2310
卷号82页码:106-112
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 (F-cK) and litter-free (F-LF) treatments were 6.07 and 5.17 mu g N2O m(-2) h(-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 F-CK and F-LF were both significantly influenced by water-filled pore space (WFPS) but not by soil temperature (T-s). However, F-cK and F-LF were both correlated with T-s during the wet season (January-June) but not during the dry season (July-December). During the wet season. F-CK and FLF were 84% and 132% higher than during the dry season, respectively. In contrast, seasonal litterbased N2O fluxes (FCK-LF = FCK-FLF) were not correlated with WFPS and T-s. 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. (C) 2013 Elsevier Ltd. All rights reserved.
文章类型Journal
关键词Litter removal Nitrous oxide Organic horizon Slash pine Soil-atmosphere N2O exchange Subtropical forest
学科领域Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences
研究领域[WOS]Environmental Sciences ; Meteorology & Atmospheric Sciences
关键词[WOS]LAND-USE TYPES ; NITROUS-OXIDE ; TROPICAL FOREST ; CONIFEROUS PLANTATION ; SOUTHERN CHINA ; SOUTHWEST CHINA ; CARBON-DIOXIDE ; CO2 EMISSIONS ; NITRIC-OXIDE ; RAIN-FOREST
收录类别SCI
语种英语
WOS记录号WOS:000329886200012
出版者PERGAMON-ELSEVIER SCIENCE LTD
引用统计
被引频次:6[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.igsnrr.ac.cn/handle/311030/44605
专题生态系统网络观测与模拟院重点实验室_生态网络实验室
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Wang, YD,Wang, HM,Wang, ZL,et al. Effect of litter layer on soil-atmosphere N2O flux of a subtropical pine plantation in China[J]. ATMOSPHERIC ENVIRONMENT,2014,82:106-112.
APA Wang, YD.,Wang, HM.,Wang, ZL.,Ma, ZQ.,Dai, XQ.,...&Liu, YF.(2014).Effect of litter layer on soil-atmosphere N2O flux of a subtropical pine plantation in China.ATMOSPHERIC ENVIRONMENT,82,106-112.
MLA Wang, YD,et al."Effect of litter layer on soil-atmosphere N2O flux of a subtropical pine plantation in China".ATMOSPHERIC ENVIRONMENT 82(2014):106-112.
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