Climate controls over the net carbon uptake period and amplitude of net ecosystem production in temperate and boreal ecosystems

dc.contributor.authorFu, Zheng
dc.contributor.authorStoy, Paul C.
dc.contributor.authorLuo, Yiqi
dc.contributor.authorChen, Jiquan
dc.contributor.authorSun, Jian
dc.contributor.authorMontagnani, Leonardo
dc.contributor.authorWohlfahrt, Georg
dc.contributor.authorRahman, Abdullah F.
dc.contributor.authorRambal, Serge
dc.contributor.authorBernhofer, Christian
dc.contributor.authorWang, Jinsong
dc.contributor.authorShirkey, Gabriela
dc.contributor.authorNiu, Shuli
dc.description.abstractThe seasonal and interannual variability of the terrestrial carbon cycle is regulated by the interactions of climate and ecosystem function. However, the key factors and processes determining the interannual variability of net ecosystem productivity (NEP) in different biomes are far from clear. Here, we quantified yearly anomalies of seasonal and annual NEP, net carbon uptake period (CUP), and the maximum daily NEP (NEPmax) in response to climatic variables in 24 deciduous broadleaf forest (DBF), evergreen forest (EF), and grassland (GRA) ecosystems that include at least eight years of eddy covariance observations. Over the 228 site-years studied, interannual variations in NEP were mostly explained by anomalies of CUP and NEPmax. CUP was determined by spring and autumn net carbon uptake phenology, which were sensitive to annual meteorological variability. Warmer spring temperatures led to an earlier start of net carbon uptake activity and higher spring and annual NEP values in DBF and EF, while warmer autumn temperatures in DBF, higher autumn radiation in EF, and more summer and autumn precipitation in GRA resulted in a later ending date of net carbon uptake and associated higher autumn and annual NEP. Anomalies in NEPmax s were determined by summer precipitation in DBF and GRA, and explained more than 50% of variation in summer NEP anomalies for all the three biomes. Results demonstrate the role of meteorological variability in controlling CUP and NEPmax, which in turn help describe the seasonal and interannual variability of NEP.en_US
dc.identifier.citationFu, Zheng, Paul C. Stoy, Yiqi Luo, Jiquan Chen, Jian Sun, Leonardo Montagnani, Georg Wohlfahrt, Abdullah F. Rahman, Serge Rambal, Christian Bernhofer, Jinsong Wang, Gabriela Shirkey, and Shuli Niu. "Climate controls over the net carbon uptake period and amplitude of net ecosystem production in temperate and boreal ecosystems." Agricultural and Forest Meteorology 243 (September 2017): 9-18. DOI: 10.1016/j.agrformet.2017.05.009.en_US
dc.titleClimate controls over the net carbon uptake period and amplitude of net ecosystem production in temperate and boreal ecosystemsen_US
mus.citation.journaltitleAgricultural and Forest Meteorologyen_US
mus.relation.collegeCollege of Agricultureen_US
mus.relation.departmentLand Resources & Environmental Sciences.en_US
mus.relation.universityMontana State University - Bozemanen_US


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