Zhao L, Li Y, Xu S, et al. Diurnal, seasonal and annual variation in net ecosystem CO2 exchange of an alpine shrubland on Qinghai-Tibetan plateau. Global Change Biology, 2006, 12(10): 1940-1953.
[3]
Falge E, Baldocchi D, Olson R, et al. Gap filling strategies for long term energy flux data sets. Agricultural and Forest Meteorology, 2001, 107(1): 71-77.
[4]
Li Y, Zhou L, Xu Z, et al. Comparison of water vapour, heat and energy exchanges over agricultural and wetland ecosystems. Hydrological Processes, 2009, 23(14): 2069-2080.
[5]
Hao Y, Wang Y, Huang X, et al. Seasonal and interannual variation in water vapor and energy exchange over a typical steppe in Inner Mongolia, China. Agricultural and Forest Meteorology, 2007, 146(1-2): 57-69.
[6]
Frank A B. Evapotranspiration from northern semiarid grasslands. Agronomy Journal, 2003, 95(6): 1504-1509.
[7]
Hanson R L. Evapotranspiration and droughts. U.S.Geological Survey Water Supply Paper, 1988, 2375: 99-104.
[8]
Song J. Phenological influences on the albedo of prairie grassland and crop fields. International Journal of Biometeorology, 1999, 42(3): 153-157.
[9]
Lafleur P M, Rouse W R, Carlson D W. Energy balance differences and hydrologic impacts across the northern treeline. International Journal of Climatology, 1992, 12(2): 193-203.
Gao F, Schaaf C B, Strahler A H, et al. MODIS bidirectional reflectance distribution function and albedo climate modeling grid products and the variability of albedo for major global vegetation types. Jounal of Geophysical Research, 2005, 110: D01104, doi: 10.1029/2004JD005190.
Brutsaert W. Evaporation into the Atmosphere: Theory, History, and Applications. Boston: Kluwer Academic Publicers, 1982.
[17]
Wever L A, Flanagan L B, Carlson P J. Seasonal and interannual variation in evapotranspiration, energy balance and surface conductance in a northern temperate grassland. Agricultural and Forest Meteorology, 2002, 112(1): 31-49.
[18]
Adams J M, Faure H, Faure-Denard L, et al. Increases in terrestrial carbon storage from the Last Glacial Maximum to the present. Nature, 1990, 348: 711-714.
Baldocchi D D. Assessing the eddy covariance technique for evaluating carbon dioxide exchange rates of ecosystems: past, present and future. Global Change Biology, 2003, 9(4): 479-492.
[27]
Li S G, Asanuma J, Kotani A, et al. Evapotranspiration from a Mongolian steppe under grazing and its environmental constraints. Journal of Hydrology, 2007, 333(1): 133-143.
[28]
Bremer D J, Auen L M, Ham J M, et al. Evapotranspiration in a prairie ecosystem: effects of grazing by cattle. Agronomy Journal, 2001, 93(2): 338-348.
[29]
Meyers T P. A comparison of summertime water and CO2 fluxes over rangeland for well watered and drought conditions. Agricultural and Forest Meteorology, 2001, 106: 205-214.
[30]
Gu S, Tang Y, Cui X, et al. Characterizing evapotranspiration over a meadow ecosystem on the Qinghai-Tibetan Plateau. Journal of Geophysical Research, 2008, 113: D08118, doi: 10.1029/2007 JD009173.
