气候变化领域集成服务门户(CCPortal): Seasonal and diurnal variations of carbon dioxide and energy fluxes over three land cover types of Nepal

CCPortal

DOI	10.1007/s00704-019-02986-7
	Seasonal and diurnal variations of carbon dioxide and energy fluxes over three land cover types of Nepal
	Joshi, Bharat Badayar; Ma, Yaoming; Ma, Weiqiang; Sigdel, Madan; Wang, Binbin; Subba, Sunil
通讯作者	Ma, YM (通讯作者)
发表日期	2020
ISSN	0177-798X
EISSN	1434-4483
起始页码	415
结束页码	430
卷号	139 期号:1-2
英文摘要	This study examines the seasonal and diurnal variations of carbon dioxide and energy fluxes over three land cover types of Nepal by using the eddy covariance method from March to November 2016. The surface energy balance closures were moderate with the values of about 56%, 61%, and 64% closure at Kirtipur, Simara, and Tarahara sites respectively. The monthly average values of net radiation flux and latent heat flux peaked in August at Kirtipur and Tarahara sites whereas in June at the Simara site respectively. The maximum monthly average measured sensible heat flux was 37 W m(-2), 43.6 W m(-2), and 36.3 W m(-2) in April for all the sites whereas soil heat flux was 5.1 W m(-2) and 2.9 W m(-2) in April for Kirtipur and Simara sites and 6.2 W m(-2) in June for the Tarahara site. The magnitude of diurnal peak of net ecosystem CO2 exchange (NEE) reached up to 11.04 mu mol m(-2) s(-1) at Kirtipur, 15.04 mu mol m(-2) s(-1) at Simara, and 10.44 mu mol m(-2) s(-1) at Tarahara sites respectively. Among the three study sites, the ecosystem at the Kirtipur site was a good carbon source; the ecosystems at Simara and Tarahara sites were low and good carbon sink in the growing season. In addition, all three different land cover ecosystem were carbon source when accounted for the measurement period.
关键词	WATER-USE EFFICIENCY BALANCE CLOSURE INTERANNUAL VARIATION INNER-MONGOLIA HEAT-FLUX EXCHANGE VAPOR EVAPOTRANSPIRATION SWITCHGRASS VARIABILITY
英文关键词	Eddy covariance measurements; Carbon dioxide flux; Turbulent heat flux; Seasonal and diurnal variations; Nepal
语种	英语
WOS研究方向	Meteorology & Atmospheric Sciences
WOS类目	Meteorology & Atmospheric Sciences
WOS记录号	WOS:000511515200028
来源期刊	THEORETICAL AND APPLIED CLIMATOLOGY
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/259865
推荐引用方式 GB/T 7714	Joshi, Bharat Badayar,Ma, Yaoming,Ma, Weiqiang,et al. Seasonal and diurnal variations of carbon dioxide and energy fluxes over three land cover types of Nepal[J]. 中国科学院青藏高原研究所,2020,139(1-2).
APA	Joshi, Bharat Badayar,Ma, Yaoming,Ma, Weiqiang,Sigdel, Madan,Wang, Binbin,&Subba, Sunil.(2020).Seasonal and diurnal variations of carbon dioxide and energy fluxes over three land cover types of Nepal.THEORETICAL AND APPLIED CLIMATOLOGY,139(1-2).
MLA	Joshi, Bharat Badayar,et al."Seasonal and diurnal variations of carbon dioxide and energy fluxes over three land cover types of Nepal".THEORETICAL AND APPLIED CLIMATOLOGY 139.1-2(2020).