Evaporation and transpiration from multiple proximal forests and wetlands Journal Article uri icon

Overview

abstract

  • ; Climate change is intensifying the hydrologic cycle and altering; ecosystem function, including water flux to the atmosphere through; evapotranspiration (ET). ET is made up of evaporation (E) via; non-stomatal surfaces, and transpiration (T) through plant stomata which; are impacted by global changes in different ways. E and T are difficult; to measure independently at the ecosystem scale, especially across sites; that represent different land use and land management strategies. To; address this gap in understanding, we applied flux variance similarity; to quantify how E and T differ across 12 different ecosystems measured; using eddy covariance in a 10 × 10 km; 2; area from the; CHEESEHEAD19 experiment in northern Wisconsin, USA. The study sites; included seven deciduous broadleaf forests, three evergreen needleleaf; forests, and two wetlands. Net radiation explained on average 68% of; the variance of half-hourly T, which decreased from summer to autumn.; Average T/ET for the study period was 55% in forested sites and 46% in; wetlands. Deciduous and evergreen forests showed similar E trajectories; over time despite differences in vegetation phenology. E increased; dramatically after large precipitation events in loam soils but the; response in sandy soils was more muted, consistent with the notion that; lower infiltration rates temporarily enhance E. Results suggest that E; and T partitioning methods are promising for comparing ecosystem; hydrology across multiple sites to improve our process-based; understanding of ecosystem water flux.;

publication date

  • June 30, 2022

has restriction

  • closed

Date in CU Experts

  • July 19, 2022 9:14 AM

Full Author List

  • Shveytser V; Stoy PC; Butterworth BJ; Wiesner S; Skaggs T; Murphy B; Wutzler T; El-Madany TS; Desai AR

author count

  • 9

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