Effects of Litter Inputs on N2O Emissions from a Tropical Rainforest in Southwest China

doi:10.1007/s10021-017-0199-8

CORC > 地理科学与资源研究所 > 中国科学院地理科学与资源研究所 > 生态系统研究网络观测与模拟重点实验室 > CERN水分分中心

	Effects of Litter Inputs on N2O Emissions from a Tropical Rainforest in Southwest China
	Gao, Jinbo 1,2,9; Zhou, Wenjun 1,2; Liu, Yuntong 1,2; Zhu, Jing 3; Sha, Liqing 1,2; Song, Qinhai 1,2; Ji, Hongli 1,4; Lin, Youxing 1,2,9; Fei, Xuehai 1,2,9; Bai, Xiaolong 1,2,9
刊名	ECOSYSTEMS
	2018-08-01
卷号	21 期号:5 页码:1013-1026
关键词	litter removal nutrient efflux litter-decomposed carbon litter-decomposed nitrogen N2O emissions tropical rainforest
ISSN号	1432-9840
DOI	10.1007/s10021-017-0199-8
通讯作者	Zhou, Wenjun(zhouwj@xtbg.ac.cn) ; Zhang, Yiping(yipingzh@xtbg.ac.cn)
英文摘要	Litter inputs are expected to have a strong impact on soil N2O efflux. This study aimed to assess the effects of the litter decomposition process and nutrient efflux from litter to soil on soil N2O efflux in a tropical rainforest. A paired study with a control (L) treatment and a litter-removed (NL) treatment was followed for 2 years, continuously monitoring the effects of these treatments on soil N2O efflux, fresh litter input, decomposed litter carbon (LCI) and nitrogen (LNI), soil nitrate (NO3 (-)-N), ammonium (NH4 (+)-N), dissolved organic carbon (DOC), and dissolved nitrogen (DN). Soil N2O flux was 0.48 and 0.32 kg N2O-N ha(-1) year(-1) for the L and NL treatments, respectively. Removing the litter caused a decrease in the annual soil N2O emission by 33%. The flux values from the litter layer were higher in the rainy season as compared to the dry season (2.10 +/- 0.28 vs. 1.44 +/- 0.35 mu g N m(-2) h(-1)). The N2O fluxes were significantly correlated with the soil NO3 (-)-N contents (P < 0.05), indicating that the N2O emission was derived mainly from denitrification as well as other NO3 (-) reduction processes. Suitable soil temperature and moisture sustained by rainfall were jointly attributed to the higher soil N2O fluxes of both treatments in the rainy season. The N2O fluxes from the L were mainly regulated by LCI, whereas those from the NL were dominated jointly by soil NO3 (-) content and temperature. The effects of LCI and LNI on the soil N2O fluxes were the greatest in the 2 months after litter decomposition. Our results show that litter may affect not only the variability in the quantity of N2O emitted, but also the mechanisms that govern N2O production. However, further studies are still required to elucidate the impacting mechanisms of litter decomposition on N2O emission from tropical forests.
资助项目	Yunnan Province Natural Science Foundation[2016FB073] ; National Natural Science Foundation of China[U1602234] ; National Natural Science Foundation of China[41271056] ; National Natural Science Foundation of China[31290221] ; Strategic Priority Research Program of the Chinese Academy of Sciences[XDA05020302] ; Strategic Priority Research Program of the Chinese Academy of Sciences[XDA05050601] ; Strategic Priority Research Program of the Chinese Academy of Sciences[XDA05050206] ; CAS-JSPS Cooperative Research Project[GJHZ1521] ; CAS 135 project[2017XTBG-T01] ; CAS 135 project[2017XTBG-F01] ; Chinese Academy of Sciences President's International Fellowship Initiative[2017VCA0036]
WOS关键词	NITROUS-OXIDE EMISSIONS ; GREENHOUSE-GAS FLUXES ; RUBBER PLANTATION ; ORGANIC-CARBON ; WATER-CONTENT ; LAND-USE ; SOIL ; CH4 ; CO2 ; TEMPERATURE
WOS研究方向	Environmental Sciences & Ecology
语种	英语
出版者	SPRINGER
WOS记录号	WOS:000440986000014
资助机构	Yunnan Province Natural Science Foundation ; National Natural Science Foundation of China ; Strategic Priority Research Program of the Chinese Academy of Sciences ; CAS-JSPS Cooperative Research Project ; CAS 135 project ; Chinese Academy of Sciences President's International Fellowship Initiative
内容类型	期刊论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/54554]
专题	地理科学与资源研究所_生态系统研究网络观测与模拟重点实验室_CERN水分分中心
通讯作者	Zhou, Wenjun; Zhang, Yiping
作者单位	1.Chinese Acad Sci, Key Lab Trop Forest Ecol, Xishuangbanna Trop Bot Garden, Mengla 666303, Peoples R China 2.Chinese Ecosystem Res Net, Xishuangbanna Stn Trop Rain Forest Ecosyst Studie, Mengla 666303, Peoples R China 3.Guangxi Normal Univ, Guilin 541004, Peoples R China 4.Jiangxi Acad Agr Sci, Inst Crops, Nanchang 330200, Jiangxi, Peoples R China 5.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Beijing 100101, Peoples R China 6.Chinese Acad Sci, Inst Appl Ecol, Key Lab Forest Ecol & Management, Shenyang 110016, Liaoning, Peoples R China 7.Chinese Acad Sci, Inst Atmospher Phys, State Key Lab Atmospher Boundary Layer Phys & Atm, Beijing 100029, Peoples R China 8.Univ Edinburgh, Sch GeoSci, Edinburgh EH9 3FF, Midlothian, Scotland 9.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Gao, Jinbo,Zhou, Wenjun,Liu, Yuntong,et al. Effects of Litter Inputs on N2O Emissions from a Tropical Rainforest in Southwest China[J]. ECOSYSTEMS,2018,21(5):1013-1026.
APA	Gao, Jinbo.,Zhou, Wenjun.,Liu, Yuntong.,Zhu, Jing.,Sha, Liqing.,...&Zhang, Yiping.(2018).Effects of Litter Inputs on N2O Emissions from a Tropical Rainforest in Southwest China.ECOSYSTEMS,21(5),1013-1026.
MLA	Gao, Jinbo,et al."Effects of Litter Inputs on N2O Emissions from a Tropical Rainforest in Southwest China".ECOSYSTEMS 21.5(2018):1013-1026.