EDDY-COVARIANCE

作品数：9被引量：29H指数：3
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Machine Learning and Pattern Analysis Identify Distinctive Influences from Long-term Weekly Net Ecosystem Exchange at Four Deciduous Woodland Locations
《Research in Ecology》2022年第4期13-38,共26页David A.Wood 
A methodology integrating correlation,regression(MLR),machine learning(ML),and pattern analysis of long-term weekly net ecosystem exchange(NEE)datasets are applied to four deciduous broadleaf forest(DBF)sites forming ...
关键词：EDDY-COVARIANCE CO_(2)-flux influences Multi-fold cross validation Weekly NEE pattern analysis Site specific NEE influences FLUXNET2015 protocols 
Measuring and modeling evapotranspiration of a Populus euphratica forest in northwestern China被引量：2
《Journal of Forestry Research》2021年第5期1963-1977,共15页Guanlong Gao Qi Feng Xiande Liu Yonghua Zhao 
supported financially by the Shanxi Province Science Foundation for Youth(201801D221286);the Chinese Post-doctoral Science Foundation(2018M643769);the Scientific and Technological Innovation Programs of Higher Education Institutions in Shanxi(2020L0028);the Fundamental Research Funds for the Central Universities CHD(300102279505);the Shaanxi Key Laboratory of Land Consolidation(2018–JC13)。
Vegetation is sparsely distributed in the arid regions of northwestern China,and accurately measuring and partitioning of evapotranspiration is of importance for ecosystems in such areas.In this study,we measured and ...
关键词：EVAPOTRANSPIRATION EDDY-COVARIANCE Populus euphratica Northwestern China 
Improved data gap-filling schemes for estimation of net ecosystem exchange in typical East-Asian croplands
《Science China Earth Sciences》2016年第8期1652-1664,共13页ZHAO Peng Johannes LüERS 
funding provided by University of Innsbruck;part of the International Research Training Group TERRECO (Grant No. GRK 1565/1) funded by the Deutsche Forschungsge-meinschaft (DFG) at the University of Bayreuth, Germany and the Korean Research Foundation (KRF) at Kangwon National University, Chuncheon, South Korea
The estimation of carbon exchange between ecosystems and the atmosphere suffers unavoidable data gaps in eddy-covariance technique, especially for short-living and fast-growing croplands. In this study we developed a ...
关键词：EDDY-COVARIANCE GAP-FILLING Net ecosystem exchange LAI 
Effects of Coordinate Rotation on Turbulent Flux Measurements during Wintertime Haze Pollution in Beijing, China
《Atmospheric and Oceanic Science Letters》2015年第2期67-71,共5页GUO Xiao-Feng 
funded by the National Basic Research Program of China(Grant No.2014CB447900);National High Technology Research and Development Program(Grant No.2014AA06A512);Ministry of Environmental Protection of China through its Special Funds for Scientific Research on Public Welfare(Grant No.201409001)
Eddy-covariance observations from the Beijing 325-m meteorological tower are used to evaluate the effects of coordinate rotation on the turbulent exchange of momentum and scalars during wintertime haze pollution(Janua...
关键词：coordinate rotation eddy-covariance method particulate air pollution turbulent exchange urban environment 
Spatial variation of net radiation and its contribution to energy balance closures in grassland ecosystems被引量：3
《Ecological Processes》2014年第1期190-200,共11页Changliang Shao Linghao Li Gang Dong Jiquan Chen 
This study was supported by the Natural Science Foundation of China(31170454,31229001,31130202);the State Key Basic Research Development Program of China(2013CB956600);the NASA-NEWS Program(NN-H-04-Z-YS-005-N),and the USCCC。
Introduction:Low energy balance closure(EBC)at a particular eddy-covariance flux site has increased the uncertainties of carbon,water,and energy measurements and has thus hampered the urgent research of scaling up and...
关键词：Inner Mongolia EDDY-COVARIANCE Energy balance closure Net radiation Spatial variability Typical steppe 
Estimation of Turbulent Fluxes Using the Flux-Variance Method over an Alpine Meadow Surface in the Eastern Tibetan Plateau被引量：11
《Advances in Atmospheric Sciences》2013年第2期411-424,共14页WANG Shaoying ZHANG Yu LU Shihua LIU Heping SHANG Lunyu 
funding frown the Chinese National Key Programme for Developing Basic Sciences，the National Natural Science Foundation of China，the Key Program of the Chinese Academy of Sciences，the National Natural Science Foundation of China，the Foundation for Excellent Young Scholars of CAREERI
The flux-variance similarity relation and the vertical transfer of scalars exhibit dissimilarity over different types of surfaces, resulting in different parameterization approaches of relative transport efficiency am...
关键词：flux-variance method relative transfer efficiency eddy-covariance method homogeneous landsurface turbulent flux 
Seasonal and annual variation of CO_2 flux above a broad-leaved Korean pine mixed forest被引量：10
《Science China Earth Sciences》2006年第S2期63-73,共11页ZHANG Junhui, YU Guirui, HAN Shijie, GUAN Dexin & SUN Xiaomin Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016, China Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China 
This study was supported by the State Key Basic Research Project (Grant No. 2002CB412502); the Innovation Study Key Project of the Chinese Academy of Sciences (Grant No. KZCX1-SW-01- 01); the Young Scientist Project of National Natural Sci-ences Foundation (Grant No. 30500079); the Key Pro-ject of National Natural Sciences Foundation (Grant No.90411020).
Long-term measurement of carbon metabolism of old-growth forests is critical to predict their behaviors and to reduce the uncertainties of carbon accounting under changing climate. Eddy covariance technology was appli...
关键词：OLD-GROWTH forest EDDY-COVARIANCE carbon METABOLISM SEASONAL and ANNUAL dynamics 
UU_* filtering of nighttime net ecosystem CO_2 exchange flux over forest canopy under strong wind in wintertime被引量：1
《Science China Earth Sciences》2005年第z1期85-92,共8页ZHANG Junhui, HAN Shijie, SUN Xiaomin & TANG Fengde Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016, China Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China Department of Environment and Life Sciences, Liaoning University, Shenyang 110036, China 
The mechanism of the negative nighttime net CO2 flux in wintertime and reasonable treatment with it is of great importance in evaluating the carbon metabolism of boreal forest. Results, based on the data obtained with...
关键词：night in wintertime negative NEE EDDY-COVARIANCE pressure fluctuation UU. filtering 
Net water vapour exchange over a mixed needle and broad-leaved forest in Changbai Mountain during autumn被引量：2
《Journal of Geographical Sciences》2003年第4期463-468,共6页HANShijie WENXuefa YUGuirui SUNXiaomin LIQingkang RENChuanyou 
Knowledge Innovation Project of CAS,No.KZCX1-SW-01-01A
Water vapour and CO2 fluxes were measured by the eddy-covariance technique above a mixed needle and broad-leaved forest with affiliated meteorological measurements in Changbai Mountain as part of China's FLUX projects...
关键词：EDDY-COVARIANCE net water vapour exchange latent heat flux 
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