DOI: 10.1016/j.atmosenv.2014.04.059
Scopus记录号: 2-s2.0-84899919448
论文题名: Nitrous oxide fluxes from three forest types of the tropical mountain rainforests on Hainan Island, China
作者: Bai Z ; , Yang G ; , Chen H ; , Zhu Q ; , Chen D ; , Li Y ; , Wang X ; , Wu Z ; , Zhou G ; , Peng C
刊名: Atmospheric Environment
ISSN: 0168-2563
EISSN: 1573-515X
出版年: 2014
卷: 92 起始页码: 469
结束页码: 477
语种: 英语
英文关键词: Soil temperature
; Spatial and temporal variability
; Tropical mountain rainforest
; Water filled pore space
Scopus关键词: Atmospheric chemistry
; Drought
; Forestry
; Nitrogen oxides
; Particulate emissions
; Temperature
; Tropics
; Atmospheric nitrous oxide
; Natural reserves
; Seasonal variation
; Soil temperature
; Spatial and temporal variability
; Tropical mountain rainforest
; Tropical rain forest
; Water-filled pore space
; Landforms
; nitrogen
; nitrous oxide
; air temperature
; article
; China
; forest
; humidity
; pH
; Podocarpus imbricatus plantation
; primary mountain rainforest
; priority journal
; seasonal variation
; secondary mountain rainforest
; soil acidity
; soil temperature
; soil water content
; tropical rain forest
; water content
; Drought
; Emission
; Forests
; Nitrogen Oxides
; Soil
; Temperature
; Tropical Atmospheres
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: Tropical rainforest soil is an important source of atmospheric nitrous oxide (N2O). However, there is still considerable uncertainty about the spatial and temporal variability of N2O fluxes. To understand these fluxes, we quantified the annual N2O emissions from three tropical mountain rainforests (primary mountain rainforest, PMR; secondary mountain rainforest, SMR; and Podocarpus imbricatus plantation, PIP) in the Jianfengling National Natural Reserve on Hainan Island, China. The average of N2O emissions in this area was 2.52±0.33kgN-N2Oha-1yr-1 (3.52kgN-N2Oha-1yr-1 in the wet season and 1.62kgN-N2Oha-1yr-1 inthe dry season) during our study period, with highly seasonal variations. The mean N2O emission rates were significantly higher during the wet season (68% of the total average) than the dry season (32% of the total average) (P<0.05). PIP had the highest N2O emission rate at 3.49±0.61kgN-N2Oha-1yr-1 (4.74kg N-N2Oha-1yr-1 in the wet season and 2.32kgN-N2Oha-1yr-1 in the dry season), followed by SMR at 3.03±0.64kgN-N2Oha-1yr-1 (4.16kgN-N2Oha-1yr-1 in the wet season and 1.97kgN-N2Oha-1yr-1 in the dry season), and then PMR at 1.53±0.49kgN-N2Oha-1yr-1 (2.21kgN-N2Oha-1yr-1 in the wet season and 0.94kgN-N2Oha-1yr-1 in the dry season). We observed a significant Gaussian relationship between the N2O fluxes and soil temperature for SMR and PIP but no significant relationship in PMR. There was a significant exponential relationship between the N2O fluxes and water filled pore space (WFPS) in SMR and PIP but not in PMR. © 2014. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/81065
Appears in Collections: 气候变化事实与影响
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作者单位: Laboratory for Ecological Forecasting and Global Change, Northwest A andF University, Yangling 712100, China; Key Laboratory of Mountain Ecological Restoration, Bioresource Utilization and oEcological Restoration Biodiversity Cons. Key Lab of Sichuan Prov., Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu 610041, China; Research Institute of Tropical Forestry, Chinese Academy of Forestry, Guangzhou 510520, China; Institut des Sciences de l'Environnement, Départment des Sciences Biologiques, Université du Québec à Montréal (UQAM), 201 Président-Kennedy, Montréal, QC H2X 3Y7, Canada
Recommended Citation:
Bai Z,, Yang G,, Chen H,et al. Nitrous oxide fluxes from three forest types of the tropical mountain rainforests on Hainan Island, China[J]. Atmospheric Environment,2014-01-01,92