09-12-1997 Planning Packet - Laserfiche WebLink

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hPP 04 '97 lOmUHtl TP hVE:L11 hiS p.t. 1£ JRFF PftFSF.RVATTON POT irV CJTY OF ORONO Tecbnical Terms: appendix a Cambium: The tissue within the woody ponion of trees and shrubs which gives nse to the woody water and nutrient conducting system, and the energy substrate transport system in trees Cambial dieback: The irreparable radial of vertical imermption of a tree's cambium, usually caused by mechanical damage, such as "skinning bark", or from excessive heat. Cortiferous; Belonging to the group of conc-beaiing evergreen trees or shrubs. Deciduous- Not persistent; the shedding of leaves annually. Feeder roots A complex system of small annual roots growing outward and predominantly upward from the system of "transport roots" These roots branch four or more times to form fans or mats of thousands of fine, short, non-woody tips. M^v of these small roots and their multiple tips are 0 2 to Imin or less in diameter, and less than 1 to 2mm long These roots constitute the major fraction of a tree's root system surface area, and are the primary sites of absorption of water and nutnents. Major Woody Roots First order tree roots originating at the "root collar’' and growing horizontally li the soil to a distance of between 3 and 1 5 feet from the tree s trunk These major woody roots include anchorage, structural support, the storage of tood reserves, and the transpon of minerals and nutrients. Protected Root Zone; The rooting area of a tree established to limit root disturbances. Tliis zone is generally defined as a circle with a radius extending from a tree s tru^ t p“el®than the furthes, crown dnplinc Disturbances wi.hin rhis zone w.Il d.recrly affect a tree’s chance for survival. Root Collar; The point of attachment of major woody roots to the tree trunk, usually at or near the gi oundline and associated with a marked swelling of the tree trunk. Root Respiration. /Vn active process occurring throughout the feeder root system of trees, and involving tlie consumption of oxygen and sugars with the release o* energy and carbon-dioxfde Root respiration facilitates the uptake and transport ot minerals and nutrients essential for tree survival.