气候变化领域集成服务门户(CCPortal): Energy Exchange and Evapotranspiration over the Ejina Oasis Riparian Forest Ecosystem with Different Land-Cover Types

CCPortal

DOI	10.3390/w13233424
	Energy Exchange and Evapotranspiration over the Ejina Oasis Riparian Forest Ecosystem with Different Land-Cover Types
	Wang, Weizhen; Xu, Feinan; Wang, Jiemin
通讯作者	Wang, WZ (通讯作者)，Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, Heihe Remote Sensing Expt Res Stn, Key Lab Remote Sensing Gansu Prov, Lanzhou 730000, Peoples R China. ; Wang, WZ (通讯作者)，Chinese Acad Sci, Key Lab Land Surface Proc & Climate Change Cold &, Lanzhou 730000, Peoples R China.
发表日期	2021
EISSN	2073-4441
卷号	13 期号:23
英文摘要	Investigating the energy and water vapor exchange in oasis riparian forest ecosystems is of significant importance to improve scientific understanding of land surface processes in extreme arid regions. The Heihe Watershed Allied Telemetry Experimental Research (HiWATER) provided many observations of water vapor and heat fluxes from riparian forest ecosystem by using a network of eddy-covariance (EC) systems installed over representative surfaces in the Ejina Oasis, which is located in the downstream areas of the Heihe River Basin, northwestern China. Based on EC flux measurements and meteorological data performed at five stations and covering representative surface types of Populus euphratica tree with associated Tamarix chinensis shrub, Tamarix chinensis shrubland, cantaloupe cropland, and barren-land, this study explored the spatio-temporal patterns of heat and water vapor fluxes over the Ejina Oasis riparian forest ecosystem with five different surface types over the course of a growing season in 2014. Energy balance closure of the flux data was evaluated; footprint analysis for each EC site was also performed. Results showed that energy balance closure for the flux data was reasonably good, with average energy balance ratio (EBR) of 1.03. The seasonal variations in net radiation (R-n), latent (LE), and sensible heat flux (H) over the five contrasting surfaces were similar, and a reverse seasonal change was observed in energy partitioning into LE and H. Remarkable differences in R-n, LE, and H between the five surfaces were explored preliminarily, associated closely with the soil properties and foliage phenology. Over the growing season (May-October) in 2014, the total ET ranged 622-731 mm for mixed forest of P. euphratica trees with associated T. chinensis shrubs with average daily ET of 3.6-4.2 mm; ET from T. chinensis shrubland was about 541 mm, with average daily ET of 3.6 mm. ET for barren-land was 195 mm. The total ET in irrigated cantaloupe cropland with plastic mulch was 431 mm for its four-month growing period with a total average of 3.8 mm d(-1). Determination of ET over riparian forest ecosystem helps to improve reasonable use of limited water resource in the Ejina Oasis.
关键词	HEIHE RIVER-BASIN AREA-AVERAGED EVAPOTRANSPIRATION WATER-VAPOR EXCHANGE EDDY-COVARIANCE BALANCE CLOSURE POPULUS-EUPHRATICA CARBON-DIOXIDE LOWER REACHES INTERANNUAL VARIATIONS FLUX MEASUREMENTS
英文关键词	energy flux; evapotranspiration; riparian forest; Ejina Oasis; Heihe River Basin; eddy covariance
语种	英语
WOS研究方向	Environmental Sciences & Ecology ; Water Resources
WOS类目	Environmental Sciences ; Water Resources
WOS记录号	WOS:000734636200001
来源期刊	WATER
来源机构	中国科学院西北生态环境资源研究院
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/254592
作者单位	[Wang, Weizhen; Xu, Feinan; Wang, Jiemin] Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, Heihe Remote Sensing Expt Res Stn, Key Lab Remote Sensing Gansu Prov, Lanzhou 730000, Peoples R China; [Wang, Weizhen] Chinese Acad Sci, Key Lab Land Surface Proc & Climate Change Cold &, Lanzhou 730000, Peoples R China
推荐引用方式 GB/T 7714	Wang, Weizhen,Xu, Feinan,Wang, Jiemin. Energy Exchange and Evapotranspiration over the Ejina Oasis Riparian Forest Ecosystem with Different Land-Cover Types[J]. 中国科学院西北生态环境资源研究院,2021,13(23).
APA	Wang, Weizhen,Xu, Feinan,&Wang, Jiemin.(2021).Energy Exchange and Evapotranspiration over the Ejina Oasis Riparian Forest Ecosystem with Different Land-Cover Types.WATER,13(23).
MLA	Wang, Weizhen,et al."Energy Exchange and Evapotranspiration over the Ejina Oasis Riparian Forest Ecosystem with Different Land-Cover Types".WATER 13.23(2021).