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	Carbon Dioxide Fluxes and Their Environmental Controls in a Riparian Forest within the Hyper-Arid Region of Northwest China
	Ma, Xiaohong1,2,3; Feng, Qi1,2; Yu, Tengfei1,2; Su, Yonghong1,2; Deo, Ravinesh C.1,2,4
刊名	FORESTS
	2017-10-01
卷号	8期号:10页码:17
关键词	carbon fluxes desert riparian forest groundwater depth climatic control
ISSN号	1999-4907
DOI	10.3390/f8100379
通讯作者	Feng, Qi(qifeng@lzb.ac.cn)
英文摘要	Hyper-arid regions are expected to undergo climatic change, but only a few research works have so far been conducted on the dynamics of carbon dioxide (CO2) fluxes and their consequent responses to various bioclimatic factors, which is mainly attributable to a limited set of flux observations. In this study, the CO2 fluxes exchanged between the forest and the atmosphere have been measured continuously by the eddy covariance approach from June 2013 to December 2016 in a riparian forest, which is a primary body of natural oases located within the lower reaches of inland rivers in China. The present results revealed that the climatic conditions characterized by relatively high mean air temperatures (T-a) with fluctuating annual precipitation (P) during the prescribed study periods were comparable to the historical mean value. The annual net ecosystem productivity (NEP) ranged from approximately 278 g C m(-2) year(-1) to 427 g C m(-2) year(-1), with a mean value of 334 g C m(-2) year(-1). The mean annual ecosystem respiration (Re) and the gross primary productivity (GPP) were found to be 558 and 892 g C m(-2) year(-1), respectively. The results also ascertained that the high inter-annual variations in NEP were attributable to Re rather than to GPP, and this result was driven primarily by T-a and the groundwater depth under similar eco-physiological processes. In addition, the CO2 fluxes were also strongly correlated with the soil temperature and photosynthetically active radiation for the present study site. In conclusion, the desert riparian forest is a considerably significant carbon sink, particularly in the hyper-arid regions.
收录类别	SCI
WOS关键词	EDDY COVARIANCE TECHNIQUE ; NET ECOSYSTEM EXCHANGE ; HEIHE RIVER-BASIN ; POPULUS-EUPHRATICA ; LOWER REACHES ; WATER-USE ; CLIMATE PROJECTIONS ; SEMIARID ECOSYSTEMS ; GROUNDWATER LEVEL ; SEASONAL PATTERNS
WOS研究方向	Forestry
WOS类目	Forestry
语种	英语
出版者	MDPI AG
WOS记录号	WOS:000414627600026
内容类型	期刊论文
URI标识	http://www.corc.org.cn/handle/1471x/2557630
专题	寒区旱区环境与工程研究所
通讯作者	Feng, Qi
作者单位	1.Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, Lanzhou 730000, Gansu, Peoples R China 2.Chinese Acad Sci, Key Lab Ecohydrol Inland River Basin, Lanzhou 730000, Gansu, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 4.Univ Southern Queensland, Inst Agr & Environm I Ag&E, Sch Agr Computat & Environm Sci, Springfield, Qld 4300, Australia
推荐引用方式 GB/T 7714	Ma, Xiaohong,Feng, Qi,Yu, Tengfei,et al. Carbon Dioxide Fluxes and Their Environmental Controls in a Riparian Forest within the Hyper-Arid Region of Northwest China[J]. FORESTS,2017,8(10):17.
APA	Ma, Xiaohong,Feng, Qi,Yu, Tengfei,Su, Yonghong,&Deo, Ravinesh C..(2017).Carbon Dioxide Fluxes and Their Environmental Controls in a Riparian Forest within the Hyper-Arid Region of Northwest China.FORESTS,8(10),17.
MLA	Ma, Xiaohong,et al."Carbon Dioxide Fluxes and Their Environmental Controls in a Riparian Forest within the Hyper-Arid Region of Northwest China".FORESTS 8.10(2017):17.

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