Description

The objective of this study is to establish growth parameters of hybrid poplar in SWAT model. Energy security and sustainable require a suite of biomass crops, including woody species. Selected hybrid poplar is expected as bioenergy feedstock for the capability of rapid growth. The quality of water and soils will be a concern when hybrid poplars are planted at wide geographic and latitudinal rang as a biomass feedstock. In this study, Soil and Water Assessment Tool (SWAT) modeling was employed to simulate the water and soil impacts of the hybrid poplar. In SWAT, fast growing tree growth parameters for hybrid poplar (P. tristis Fisch. x P. bulsamisera L. cv. Tristis #l (NC 5260)) in the Midwest were established and improved based on growth and climate data. Sensitivity analysis was used to see what effects of hybrid poplar parameters on biomass production, hydrological output (water yield) and tree growth outputs (plant uptake of Nitrogen and Phosphorus). The most sensitive parameters are: optimal and base temperature(T_OPT,T_BASE), radiation-use efficiency (BIO_E), light extinction coefficient (EXT_COEF), leaf area development (ALAI_MIN) and fraction of tree biomass accumulated each year converted to residue during dormancy (BIO_LEAF).

Start Date

11-2014

Document Type

Presentation

Keywords

woody bioenergy crop, populus, soil and water assessment tool, hydrologic and water quality, tree growth simulation

Session List

poster

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Nov 1st, 12:00 AM

Development of Simulation of Short Rotation Woody Crops - Hybrid Populars in SWAT Model

The objective of this study is to establish growth parameters of hybrid poplar in SWAT model. Energy security and sustainable require a suite of biomass crops, including woody species. Selected hybrid poplar is expected as bioenergy feedstock for the capability of rapid growth. The quality of water and soils will be a concern when hybrid poplars are planted at wide geographic and latitudinal rang as a biomass feedstock. In this study, Soil and Water Assessment Tool (SWAT) modeling was employed to simulate the water and soil impacts of the hybrid poplar. In SWAT, fast growing tree growth parameters for hybrid poplar (P. tristis Fisch. x P. bulsamisera L. cv. Tristis #l (NC 5260)) in the Midwest were established and improved based on growth and climate data. Sensitivity analysis was used to see what effects of hybrid poplar parameters on biomass production, hydrological output (water yield) and tree growth outputs (plant uptake of Nitrogen and Phosphorus). The most sensitive parameters are: optimal and base temperature(T_OPT,T_BASE), radiation-use efficiency (BIO_E), light extinction coefficient (EXT_COEF), leaf area development (ALAI_MIN) and fraction of tree biomass accumulated each year converted to residue during dormancy (BIO_LEAF).