Fuel treatment effects on stand-level carbon pools, treatment-related emissions, and fire risk in a Sierra Nevada mixed-conifer forest.

摘要: Policies have been enacted to encourage carbon (C) sequestration through afforestation, reforestation, and other silvicultural practices; however, the effects of wildfires on forest C stocks are poorly understood. We present information from Sierran mixed-conifer forests regarding how control, mechanical, prescribed-fire, mechanical followed by prescribed-fire treatments affected pools. Secondly, we report CO2 emissions machinery burning associated with treatments. Lastly, potential for loss wildfire presented. The amount above- ground in live trees was significantly reduced mechanical-only plus fire treatments; contained dead not different. There no significant difference aboveground tree between fire-only control Fire-only emitted more than treatment control. Modeling results demonstrated 90% had a high (>75%) chance being killed wildfire; contrast, all three active low vulnerabilities loss. With severity increasing most forests, management actions designed increase resistance justified long- term sequestration.