On the Long-Term Hydroclimatic Sustainability of Perennial Bioenergy Crop Expansion over the United States
| العنوان: | On the Long-Term Hydroclimatic Sustainability of Perennial Bioenergy Crop Expansion over the United States |
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| المؤلفون: | Andy VanLoocke, Justin E. Bagley, Carl J. Bernacchi, Matei Georgescu, M. Wang, Yiannis Kamarianakis, Melissa Wagner, Mohamed Moustaoui, Alex Mahalov, J. N. Miller, Gonzalo Miguez-Macho |
| المصدر: | Journal of Climate. 30:2535-2557 |
| بيانات النشر: | American Meteorological Society, 2017. |
| سنة النشر: | 2017 |
| مصطلحات موضوعية: | Atmospheric Science, 010504 meteorology & atmospheric sciences, Perennial plant, biology, business.industry, Agroforestry, Climate change, Miscanthus, 010501 environmental sciences, biology.organism_classification, 01 natural sciences, Renewable energy, Bioenergy, Climatology, Weather Research and Forecasting Model, Sustainability, Environmental science, business, Cropping, 0105 earth and related environmental sciences |
| الوصف: | Large-scale cultivation of perennial bioenergy crops (e.g., miscanthus and switchgrass) offers unique opportunities to mitigate climate change through avoided fossil fuel use and associated greenhouse gas reduction. Although conversion of existing agriculturally intensive lands (e.g., maize and soy) to perennial bioenergy cropping systems has been shown to reduce near-surface temperatures, unintended consequences on natural water resources via depletion of soil moisture may offset these benefits. The hydroclimatic impacts associated with perennial bioenergy crop expansion over the contiguous United States are quantified using the Weather Research and Forecasting Model dynamically coupled to a land surface model (LSM). A suite of continuous (2000–09) medium-range resolution (20-km grid spacing) ensemble-based simulations is conducted using seasonally evolving biophysical representation of perennial bioenergy cropping systems within the LSM based on observational data. Deployment is carried out only over suitable abandoned and degraded farmlands to avoid competition with existing food cropping systems. Results show that near-surface cooling (locally, up to 5°C) is greatest during the growing season over portions of the central United States. For some regions, principal impacts are restricted to a reduction in near-surface temperature (e.g., eastern portions of the United States), whereas for other regions deployment leads to soil moisture reduction in excess of 0.15–0.2 m3 m−3 during the simulated 10-yr period (e.g., western Great Plains). This reduction (~25%–30% of available soil moisture) manifests as a progressively decreasing trend over time. The large-scale focus of this research demonstrates the long-term hydroclimatic sustainability of large-scale deployment of perennial bioenergy crops across the continental United States, revealing potential hot spots of suitable deployment and regions to avoid. |
| تدمد: | 1520-0442 0894-8755 |
| DOI: | 10.1175/jcli-d-16-0610.1 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_________::b14076d8b1b1420df0f38e98243b2636 https://doi.org/10.1175/jcli-d-16-0610.1 |
| Rights: | OPEN |
| رقم الانضمام: | edsair.doi...........b14076d8b1b1420df0f38e98243b2636 |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 15200442 08948755 |
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| DOI: | 10.1175/jcli-d-16-0610.1 |