Learn More
The magnitude, spatial patterns, and controlling factors of the carbon and water fluxes of terrestrial ecosystems in China are not well understood due to the lack of ecosystem-level flux observations. We synthesized flux and micrometeorological observations from 22 eddy covariance flux sites across China, and examined the carbon fluxes, evapotranspiration(More)
1. Introduction Closing the energy budget at flux measurement sites is problematic, with up to 30% of energy unaccounted for even when the fetch ideally extends over flat, homogeneous surfaces with low vegetation cover Failure to close the energy balance at a particular site may imply that some or all of the scalar fluxes have been inaccurately measured(More)
To determine the role of grazing on CO 2 fluxes in a desert steppe, we used paired eddy-covariance systems to measure the net ecosystem exchange (NEE) and microclimate on adjacent pastures of grazed (GS) and ungrazed (FS) steppes on the Mongolian Plateau from 2010 to 2011. The first year was an average precipitation year, while the second year was a dry(More)
In most cases authors are permitted to post their version of the article (e.g. in Word or Tex form) to their personal website or institutional repository. Authors requiring further information regarding Elsevier's archiving and manuscript policies are encouraged to visit: Keywords: EC-LUE model Gross primary production Eddy covariance MODIS MERRA a b s t r(More)
Our knowledge about the variability of the net ecosystem exchange (NEE) of CO 2 in terrestrial ecosystems at multiple time scales remains poor; yet, it is critical to global modeling analyses for quantifying the terrestrial carbon cycle (Stoy et al., 2009). NEE is simultaneously modulated by multiple physical and biological forcing factors that constantly(More)
We investigated the variability of soil respiration and several potential regulatory factors and mod-eled their interrelationships from May to August over a 5-year period in oak forests subjected to alternative harvesting treatments as part of the Missouri Ozark Forest Ecosystem Project (MOFEP). Treatments included even-aged management (EAM), uneven-aged(More)
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 modeling analyses through site combinations in regional or global flux networks. Methods: A series of manipulative experiments were(More)
Central to the concept of coupled human and natural systems (CHANS), humans and nature are organized into interacting subsystems of a cohesive whole at multiple spatial and temporal scales. Following an overview of the challenges in implementing the CHANS concept, we used widely available measures of social, economic, and ecological systems, including gross(More)
BACKGROUND Mowing is a widely adopted management practice for the semiarid steppe in China and affects CH(4) exchange. However, the magnitude and the underlying mechanisms for CH(4) uptake in response to mowing remain uncertain. METHODOLOGY/PRINCIPAL FINDINGS In two consecutive growing seasons, we measured the effect of mowing on CH(4) uptake in a steppe(More)