干旱区生态环境知识资源中心(Arid): Seasonal and inter-annual variations in carbon fluxes and evapotranspiration over cotton field under drip irrigation with plastic mulch in an arid region of Northwest China

Arid

	Seasonal and inter-annual variations in carbon fluxes and evapotranspiration over cotton field under drip irrigation with plastic mulch in an arid region of Northwest China
	Ba Jie; Wang Jin; Chen Xi; Luo Geping; Shi Hao; Li Longhui; Li Junli
来源期刊	Journal of Arid Land
ISSN	1674-6767
出版年	2015
卷号	7 期号:2 页码:272-284
英文摘要	Xinjiang is the largest semi-arid and arid region in China, and drip irrigation under plastic mulch is widely used in this water-limited area. Quantifying carbon and water fluxes as well as investigating their environmental drivers over cotton fields is critical for understanding regional carbon and water budgets in Xinjiang, the largest cotton production basin of China. In this study, an eddy covariance (EC) technique was used to measure the carbon and water fluxes of cotton field under drip irrigation with plastic mulch in the growing seasons of 2009,2010, 2012 and 2013 at Wulanwusu Agrometeorological Experiment Station, a representative oasis cropland in northern Xinjiang. The diurnal patterns of gross primary production (GPP), net ecosystem exchange (NEE) and evapotranspiration (ET) showed obviously sinusoidal variations from June to September, while the diurnal ecosystem respiration (R_(es)) was stable between daytime and nighttime. The daytime hourly GPP and ET displayed asymptotic relationships with net solar radiation (R_(net)), while showed concave patterns with raising vapor pressure deficit (VPD) and air temperature (T_a). The increases in hourly GPP and ET towards the maximum occurred over half ranges of VPD and T_a. The seasonal variations of GPP, NEE and ET were close to the cotton phenology, which almost reached the peak value in July. The cumulative GPP averaged 816.255.0 g C/m~2 in the growing season (from April to October), and more than half of GPP was partitioned into NEE (mean value of -478.641.4 g C/m~2). The mean seasonal ET was 501.313.9 mm, and the mean water use efficiency (WUE) was 1.00.1 (mg C/g H_20)/d. The agro-ecosystem behaved as a carbon sink from squaring to harvest period, while it acted as a carbon source before the squaring time as well as after the harvest time.
英文关键词	cotton eddy covariance net ecosystem exchange (NEE) carbon budget water use efficiency (WUE)
类型	Article
语种	英语
收录类别	CSCD
WOS研究方向	History
CSCD记录号	CSCD:5347512
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/335445
作者单位	Ba Jie, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, State Key Laboratory of Desert and Oasis Ecology, Urumqi, Xinjiang 830011, China.; Chen Xi, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, State Key Laboratory of Desert and Oasis Ecology, Urumqi, Xinjiang 830011, China.; Luo Geping, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, State Key Laboratory of Desert and Oasis Ecology, Urumqi, Xinjiang 830011, China.; Li Junli, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, State Key Laboratory of Desert and Oasis Ecology, Urumqi, Xinjiang 830011, China.; Wang Jin, Wulanwusu Agrometeorological Experiment Station, Shihezi Meteorological Administration, Shihezi, Xinjiang 832003, China.; Shi Hao, Plant Functional Biology & Climate Change Cluster, University of Technology, Sydney, New South Wales 2007, Australia.; Li Longhui, Plant Functional Biology & Climate Change Cluster, University of Technology, Sydn...
推荐引用方式 GB/T 7714	Ba Jie,Wang Jin,Chen Xi,et al. Seasonal and inter-annual variations in carbon fluxes and evapotranspiration over cotton field under drip irrigation with plastic mulch in an arid region of Northwest China[J],2015,7(2):272-284.
APA	Ba Jie.,Wang Jin.,Chen Xi.,Luo Geping.,Shi Hao.,...&Li Junli.(2015).Seasonal and inter-annual variations in carbon fluxes and evapotranspiration over cotton field under drip irrigation with plastic mulch in an arid region of Northwest China.Journal of Arid Land,7(2),272-284.
MLA	Ba Jie,et al."Seasonal and inter-annual variations in carbon fluxes and evapotranspiration over cotton field under drip irrigation with plastic mulch in an arid region of Northwest China".Journal of Arid Land 7.2(2015):272-284.