Effects of canopy gaps on N2O fluxes in a tropical montane rainforest in Hainan of China

doi:10.1016/j.ecoleng.2017.04.042

CORC > 成都生物研究所 > 中国科学院成都生物研究所 > 生物多样性与生态系统服务领域 > 中国科学院山地生态恢复与生物资源利用重点实验室

	Effects of canopy gaps on N2O fluxes in a tropical montane rainforest in Hainan of China
	Yang, Huai 3,9; Detto, Matteo 8; Liu, Shirong 9; Yuan, Wenping 7; Hsieh, Cheng-, I 1; Wang, Xu 3; Chen, Renli 3; Chen, Huai 4; Peng, Changhui 2,5; Jiang, Xinhua 4
刊名	ECOLOGICAL ENGINEERING
	2017-08
卷号	105 期号:2017 页码:325-334
关键词	Climate change Tropical forest Greenhouse gas Soil moisture Soil temperature
ISSN号	0925-8574
DOI	10.1016/j.ecoleng.2017.04.042
产权排序	6
文献子类	Article
英文摘要	Background and aims: Tropical montane rainforests play an important role in increasing atmospheric N2O concentration. Although accurate estimations of N2O fluxes in tropical montane rainforests are critical for predicting global climate change, there are still considerable uncertainties about the spatial and temporal variability of the emissions. This study aims to investigate the effects of canopy gap caused by typhoons on N2O emissions, a key factor for understanding the spatial heterogeneity and supporting environmental regulations. Methods: N2O fluxes were measured monthly using static chambers both inside and outside two large canopy gaps in the tropical montane rainforest of the Jianfengling National Natural Reserve on Hainan Island, south of China, from August 2012 to July 2013. Results: Mean annual N2O emissions were 2.19 +/- 0.43 kg N2O-N ha(-1) yr(-1) inside canopy gaps, and 1.19 +/- 0.29 kg N2O-N ha(-1) yr(-1) outside canopy gaps, revealing substantial differences in N2O emissions resulting from forest structure. Moreover, N2O emission rates within canopy gaps during the wet season (2.89 kg N2O-N ha(-1) yr(-1)) were significantly higher than those during the dry season (1.34 kg N2O-N ha(-1) yr(-1)), suggesting strong regulation of soil moisture and precipitation in controlling soil N dynamics. However, there were significant nonlinear relationships between N2O fluxes and water filled pore space, and soil temperature within canopy gaps, but no significant relationships were found under the closed canopy. Conclusions: Contribution of canopy gaps should be considered to avoid underestimation of N2O emission rates from disturbed forests. Interestingly, emissions from gaps are more strongly coupled with climate drivers (moisture and temperature), with important implications for climate change projections. Therefore, the further research is needed to study the biogeochemical processes and mechanisms behind such phenomenon. (C) 2017 Elsevier B.V. All rights reserved.
学科主题	Environment ; Ecology
URL标识	查看原文
WOS关键词	NITROUS-OXIDE FLUXES ; TRACE-GAS EMISSIONS ; SOIL RESPIRATION ; NITRIC-OXIDE ; TEMPERATURE ; MOISTURE ; ISLAND ; NO ; HURRICANES ; DEPOSITION
WOS研究方向	Environmental Sciences & Ecology ; Engineering
语种	英语
出版者	ELSEVIER SCIENCE BV
WOS记录号	WOS:000404305300035
内容类型	期刊论文
源URL	[http://210.75.237.14/handle/351003/29776]
专题	生物多样性与生态系统服务领域_中国科学院山地生态恢复与生物资源利用重点实验室
通讯作者	Chen, Huai
作者单位	1.Natl Taiwan Univ, Dept Bioenvironm Syst Engn, Taipei 10617, Taiwan; 2.Univ Quebec Montreal, Dept Biol Sci, Inst Environm Sci, Montreal, PQ C3H 3P8, Canada; 3.Chinese Acad Forestry, Res Inst Trop Forestry, Guangzhou 510520, Guangdong, Peoples R China; 4.Chinese Acad Sci, Chengdu Inst Biol, Key Lab Mt Ecol Restorat & Bioresource Utilizat, Chengdu 610041, Peoples R China; 5.Northwest A&F Univ, Coll Forestry, State Key Lab Soil Eros & Dryland Farming Loess P, Yangling 712100, Peoples R China; 6.Hainan Univ, Inst Trop Agr & Forestry, Haikou 570228, Hainan, Peoples R China 7.Chinese Acad Sci, Cold & Arid Reg Environm & Engn Res Inst, State Key Lab Cryospher Sci, Lanzhou 730000, Peoples R China; 8.Smithsonian Trop Res Inst, Apartado Postal 0843-03092, Balboa, Ancon, Panama; 9.Chinese Acad Forestry, Inst Forest Ecol Environm & Protect, Key Lab Forest Ecol & Environm, State Forestry Adm, Beijing 100091, Peoples R China;
推荐引用方式 GB/T 7714	Yang, Huai,Detto, Matteo,Liu, Shirong,et al. Effects of canopy gaps on N2O fluxes in a tropical montane rainforest in Hainan of China[J]. ECOLOGICAL ENGINEERING,2017,105(2017):325-334.
APA	Yang, Huai.,Detto, Matteo.,Liu, Shirong.,Yuan, Wenping.,Hsieh, Cheng-, I.,...&Yang, Qiu.(2017).Effects of canopy gaps on N2O fluxes in a tropical montane rainforest in Hainan of China.ECOLOGICAL ENGINEERING,105(2017),325-334.
MLA	Yang, Huai,et al."Effects of canopy gaps on N2O fluxes in a tropical montane rainforest in Hainan of China".ECOLOGICAL ENGINEERING 105.2017(2017):325-334.