Mapped Atmosphere-Plant-Soil System Study

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Research

Influence of Global Climate Change on Mountain Water Resources

The distributed hydrology-biogeochemistry model (DHB) was created to study the effects of climate and land cover change at the watershed level in the Pacific Northwest. DHB was developed by incorporating components from DHSVM, a hydrology model (Storck et al. 1998, Wigmosta et al. 1994), BIOME-BGC, a biogeochemistry model (Running and Gower 1991, White et al. 1998) and MAPSS (Neilson 1995), a biogeography model. DHB simulates interactions between hydrologic fluxes, soil moisture state, and vegetation growth and mortality at a grid scale of about 100 m and on a daily time step. Simulation of vegetation includes life-form competition for light, water, and nitrogen. Simulation of hydrology includes quasi-three-dimensional redistribution of surface water and shallow groundwater. Leaf area index, root distribution, and vegetation height are the key state variables linking physical and biological fluxes in the model.

Publications

Neilson, R. 1995. A model for predicting continental-scale vegetation distribution and water balance. Ecological Applications. 5: 362-385.

Running, S.; Gower, S. 1991. FOREST-BGC, a general model of forest ecosystem processes for regional applications. II. Dynamic carbon allocation and nitrogen budgets. Tree Physiology. 9: 147-160.

Storck, P.; Bowling, L.; Wetherbee, P.; Lettenmaier, D. 1998. Application of a GIS-based distributed hydrology model for prediction of forest harvest effects on peak stream flow in the Pacific Northwest. Hydrological Processes. 12: 889-904.

Waichler, S.; Wigmosta, M.; Neilson, R.; Brugnach, M. 1998. A hydrology-biogeochemistry model for investigating impacts of climate change and timber harvest on watersheds. EOS Transactions. 79(45): 353.

White, M.; Thornton, P.; Running, S. 1998. A continental phenology model for monitoring vegetation responses to interannual climatic variability. Global Biogeochemical Cycles. 11: 217-234.

Wigmosta, M.; Vail, L.; Lettenmaier, D. 1994. A distributed hydrology-vegetation model for complex terrain. Water Resources Research. 30: 1665-1679.

US Forest Service - Pacific Northwest Research Station, Mapped Atmosphere-Plant-Soil System Study
Last Modified: Monday, 17 March 2008 at 13:20:06 EDT