Model linkage to assess forest disturbance impacts on water quality: A wildfire case study using LANDIS(II)-VELMA

被引：3
作者：
Venable, Kar'retta [1 ]
Johnston, John M. [1 ]
LeDuc, Stephen D. [2 ]
Prieto, Lourdes [1 ]
机构：
[1] Ctr Environm Measurement & Modeling, Ecosyst Proc Div, Landscape & Aquat Syst Modeling Branch, US Environm Protect Agcy EPA,Off Res & Dev, 960 Coll Stn Rd, Athens, GA 30605 USA
[2] US EPA Ctr Publ Hlth & Environm Assessment, Off Res & Dev, Res Triangle Pk, NC 27711 USA
来源：
ENVIRONMENTAL MODELLING & SOFTWARE | 2024年 / 180卷
关键词：
Nutrients; Evapotranspiration; Precipitation; Forest management; Hayman fire; Water treatment; LANDSCAPE SIMULATION-MODEL; ROCKY-MOUNTAINS; PONDEROSA PINE; WILDLAND FIRE; HAYMAN FIRE; COLORADO; CLIMATE; SEDIMENT; RUNOFF; CARBON;
D O I：
10.1016/j.envsoft.2024.106134
中图分类号：
TP39 [计算机的应用];
学科分类号：
081203 ; 0835 ;
摘要：
Wildfires in western US forests increased over the last two decades, resulting in elevated solid and nutrient loadings to streams, and occasionally threatening drinking water supplies. We demonstrated that a linked LANDIS (LANDscape DIsturbance and Succession)-VELMA (Visualizing Ecosystem Land Management Assessments) modeling approach can simulate wildland fire effects on water quality using the 2002 Colorado Hayman Fire. Utilizing LANDIS-II's forest landscape model to simulate forest composition and VELMA's eco-hydrologic model to simulate pre- and post-fire water quantity and quality, the best calibration performance yielded a Nash-Sutcliffe Efficiency (NSE) of 0.621 during 2000-2006 (most optimal annual - 0.921) in comparison to North American Land Data Assimilation System (NLDAS) runoff. Pre-fire modeled runoff, nitrate, and surface water temperature (SWT) correlated with observations. Simulated post-fire runoff (229%) and SWT (20.6%) were elevated relative to pre-fire, with nitrate concentrations 34 times greater than the aquatic life threshold (0.01 mg
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页数：17
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