NRC 225 Lecture 24Outline of Last Lecture I. Silvicultural MethodsII. Shelter WoodIII. Forest goods, services, function and valuesIV. Triad ConceptOutline of Current Lecture I. OverviewII. Historical PerspectiveIII. Key attributesIV. Adaption of treesV. Types of FireVI. TRIAD for forest/fire managementCurrent LectureForest Ecosystem and WildfireOverviewHistorical Perspective….forests, people, and fireSome key attributes of forest firesAdaption of treesRole of fire in shaping forest ecosystemsAdapting to wildfireHistorical PerspectiveUsed to clear agricultural landLate 1400’s to 1500 to 1600’s 80-90% of Indians die so forests build upOften tree was girdled because it was too much work to cut to clear fieldLarge quantities of trees were just burnedJohn Burroughs-believed in burning everything he could burnFire is ubiquitous for clearing fieldsFire is a disaster sprung onto American see quickly-always looked as goodCCC was taught that everybody loses when timber burnsTrees are good Fires are bad1947-Smokey the bear rescued from forest fire in Oregon-national sensationEisenhower supports SmokeyNew notion is Trees are Good. Forest are destructive, wasteful, preventable disastersThese notes represent a detailed interpretation of the professor’s lecture. GradeBuddy is best used as a supplement to your own notes, not as a substitute.Some key attributes of forest firesForests need fire as much as they need rainNutrients of soilBegins Process of regeneration the forestInsects-usually beetles- work on standing dead treesProfusion of growth of fire weedAnimals that feed on the profusion of flowering plantsAdaption of Trees to WildfireTrees are charred but not necessarily burned-Ponderosa PineSome bark can protect because of layersCrown Fire-worse fireSerotinous cones on lodge pole pine-fire opens these conesIn a fire millions of seeds are released and opened upMosaics in Forest are seen where there are forest firesTypes of FireSurface Fire against the wind 100-800 kWatts/meterSurface Fire with the wind 200-15,000 kWatts/meterCrown Fire 8,000-40,000 kWatts/meter“Blow up” crown fire up to 150,000 kWatts/meterA microwave is kWatts/meterTRIAD for Forest/Fire Management1. Reserve AreasLet Burn Policy-most national parks have this-restore natural ecological functionBut have effective emergency plans and resources in place2. Extensively Managed Area“Let burn if” policyLife and safety threatsWater supply threatsFuel load reductionSome use of prescribed fire3. Intensively Managed AreasFull suppression policyFire risk minimizationFirebreak networksSafety zones around houses and infrastructureMutual aid
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