Environmental Drivers of Gross Primary Production and Evapotranspiration at a Robinia pseudoacacia L. Restoration Plantation
نویسندگان
چکیده
Black locust is the second-most-often planted tree worldwide, particularly for restoration plantations, but drought dieback and growth declines are being reported. Currently, we lack information on these ecosystems’ water carbon fluxes, in relation to climatic variability. Here, employed eddy covariance determine gross primary production (GPP) evapotranspiration (ET) of a black post-mining plantation NW Greece over c. 2.5 years. Additionally, applied Generalized Additive Models (GAMs) study effects key environmental drivers (vapour pressure deficit—VPD, soil content—SWC, solar radiation—Rg enhanced vegetation index—EVI) GPP ET during summer months. Both diurnally seasonally, increased with increasing Rg, SWC EVI, was saturated after certain thresholds (Rg: 400 W m−2, SWC: 25%, EVI: 0.65). In contrast, declined strongly VPD. Overall, maintained at high level, cost ET, which constantly raised radiation not responsive VPD, indicating non-conservative use. At present, plantations exhibit favourable productivity no stress, VPD context climate change may, ultimately, negatively impact ecosystems.
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ژورنال
عنوان ژورنال: Forests
سال: 2023
ISSN: ['1999-4907']
DOI: https://doi.org/10.3390/f14050916