气候变化领域集成服务门户(CCPortal): Evapotranspiration of a drip-irrigated, film-mulched cotton field in northern Xinjiang, China

CCPortal

DOI	10.1002/hyp.8208
	Evapotranspiration of a drip-irrigated, film-mulched cotton field in northern Xinjiang, China
	Zhou, Shiqiao; Wang, Jin; Liu, Jingxian; Yang, Jinghui; Xu, Yan; Li, Jihui
通讯作者	Zhou, SQ (通讯作者)
发表日期	2012
ISSN	0885-6087
起始页码	1169
结束页码	1178
卷号	26 期号:8
英文摘要	Eddy covariance flux measurements were performed at a cotton crop site of an oasis in northern Xinjiang, northwest China from 2008 to 2010 in order to study ecosystem evapotranspiration (ET). The soil surface area was approximately 80% covered by plastic film mulch and a cotton crop was grown with a mean population density of around 24 plants m-2 under drip irrigation. The total annual ET was measured to be 560 mm, which was 350 mm more than the average annual mean precipitation for the time period 19632006. Due to the low vapor pressure deficit associated with low temperatures, the ET was low from November to March. The ET totaled 538 mm during the cotton crop growing season, generally from early-April through mid-October. Mean daily ecosystem ET was 1.41.6 mm day-1 in April and May, 3.44.7 mm day-1 from June through August, 1.82.3 mm day-1 in September and 0.70.8 mm day-1 in October. The diurnal variations of ET in all months were consistent with those of net radiation, although the leaf area index (LAI) and climate conditions changed substantially. Soil water content was not a limiting factor for ET during the period from April through September, as the crop was regularly irrigated. Therefore, ET was mainly controlled by the available energy in April and May, and by leaf area from June through September. Due to a complete lack of irrigation, ET was constrained by soil water in October. These results of ET variability are helpful for improved allocation of water resources and agricultural water use practices in the region. Copyright (c) 2011 John Wiley & Sons, Ltd.
关键词	CARBON-DIOXIDE EXCHANGE ENERGY-BALANCE CLOSURE WATER-VAPOR HEAT ECOSYSTEM CLIMATE FLUXES FOREST SOIL VARIABILITY
英文关键词	cotton; evapotranspiration; plastic film mulch; drip irrigation; drip irrigation with plastic film mulch; eddy covariance
语种	英语
WOS研究方向	Water Resources
WOS类目	Water Resources
WOS记录号	WOS:000302397100006
来源期刊	HYDROLOGICAL PROCESSES
来源机构	中国科学院青藏高原研究所
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/257980
推荐引用方式 GB/T 7714	Zhou, Shiqiao,Wang, Jin,Liu, Jingxian,et al. Evapotranspiration of a drip-irrigated, film-mulched cotton field in northern Xinjiang, China[J]. 中国科学院青藏高原研究所,2012,26(8).
APA	Zhou, Shiqiao,Wang, Jin,Liu, Jingxian,Yang, Jinghui,Xu, Yan,&Li, Jihui.(2012).Evapotranspiration of a drip-irrigated, film-mulched cotton field in northern Xinjiang, China.HYDROLOGICAL PROCESSES,26(8).
MLA	Zhou, Shiqiao,et al."Evapotranspiration of a drip-irrigated, film-mulched cotton field in northern Xinjiang, China".HYDROLOGICAL PROCESSES 26.8(2012).