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template There are two types of sapwood, "conducting" and "non-conducting". Sapwood in many tree species maintains only a single growth increment that has open vessels. Sapwood has four major functions: 1) transport; 2) storage; 3) mechanical support; 4) protection and defense. www.treedictionary.com /DICT2003/S/index.html   (11234 words)

Wood - Wikipedia, the free encyclopedia Thin sapwood is characteristic of such trees as chestnut, fl locust, mulberry, osage-orange, and sassafras, while in maple, ash, hickory, hackberry, beech, and pine, thick sapwood is the rule. Sapwood is thicker in the upper portion of the trunk of a tree than near the base, because the age and the diameter of the upper sections are less. In a large log the sapwood, because of the time in the life of the tree when it was grown, may be inferior in hardness, strength, and toughness to equally sound heartwood from the same log. en.wikipedia.org /wiki/Wood   (4268 words)

sapwood - HighBeam Encyclopedia sapwood relatively thin, youngest, outer part of the woody stem of a tree, the part that conducts water and dissolved materials. In the cross section of a tree, the sapwood is recognizable by its texture and color; it is softer and lighter than the inner heartwood. As the tree grows in diameter, the innermost layers of sapwood become heartwood, and new sapwood is produced on the outside of the woody column. www.encyclopedia.com /doc/1E1-sapwood.html   (314 words)

Texas Woodcrafts - Wood, Lumber, Turning Blanks For Sale Sapwood is present on one side (the top in the 1st photo) with bark along the edges. Sapwood and bark are present on the backside and one small "barky" area on the bottom surrounds a shallow hole. Sapwood and a thick section of bark is present along one edge and side at one end. www.texaswoodcrafts.net /mesquite/smallblock.asp   (2934 words)

Heartwood and Sapwood - Picture - MSN Encarta The wood at the center of the trunk, the heartwood, is older, darker, and more durable than the younger wood surrounding it. Sapwood is softer and tends to be lighter in color than heartwood. As the sapwood ages, natural substances called extractives invade the sapwood and gradually convert it to heartwood. encarta.msn.com /media_461550662_761560396_-1_1/Heartwood_and_Sapwood.html   (93 words)

sapwood - Information for Building And Construction The sapwood of American white oak is light coloured and the heartwood is light to dark brown. Next is the sapwood, also composed mostly of living cells through which food and water are collected by the roots and sent up to the branches and leaves. Sapwood is white to pale yellow; heartwood is russet with high contrast between the springwood and summerwood. aec.cadinfo.net /1/kw031/sapwood-412.html   (712 words)

Sapwood Basal Area   (Site not responding. Last check: 2007-10-27) The (density) of fibers in the fiber mat and the stand sapwood basal area in the root mat are related because the pipe model describes sapwood in terms of 'pipes' which are akin to the fibers in the fiber mat model. The stand sapwood basal area is the sum of the sapwood cross sectional area of each stem in the stand, divided by the area of the stand. The current stand sapwood basal area will be proportional to the current foliage biomass fraction L (canopy closure), and so it will be the product of L and the maxumum value of the stand sapwood basal area B measured any time after crown closure. students.washington.edu /fkrogsta/decision/roots/sapwood-basal-area.html   (385 words)

Metinfo Kasvu Lignum Growth Model Sapwood is a major "maintenance" cost for a tree. that the effect of sapwood senescence is propagated downwords in a tree. sapwood in a tree segment is controlled by the death of foliage. www.metla.fi /metinfo/kasvu/lignum/lignum-2-kasvu-en.htm   (428 words)

Ace Hardwood Floors, Hardwood Floor Installation, Hardwood Floor Refinishing, Custom Hardwood Floor Inlays Plainsaw is swirled; rift or quartersawn is primarily pinstriped. Difference between heartwood and sapwood color is great; some flooring manufacturers steam lumber to bleed the darker heartwood color into the sapwood, resulting in a more uniform color. Sapwood is yellowish-white and clearly demarcated from heartwood. www.acehardwoodfloors.net /wood_types.php   (1248 words)

Woodlist - Canadian Flooring Grades Sapwood is ivory white with a slight reddish-brown tinge. Slight variation in the natural sapwood color (sticker stain is not considered a defect). Variation in the natural sapwood color (sticker stain is not considered a defect). www.woodlist.com /ref/flooring.asp   (147 words)

Timber Building in Australia As new wood, that is outer sapwood, is formed just under the bark, the inner sapwood adjacent to the heartwood is in the process of being converted to heartwood. Sapwood and heartwood, at equivalent moisture contents, are often equally strong and weigh about the same. Sapwood has lower natural decay resistance (durability) than heartwood, but generally accepts preservatives more readily. oak.arch.utas.edu.au /tbia/view_article.asp?articleID=141   (204 words)

Lumber- Conrad Forest Products - 800-356-7146 - WOOD TREATMENTS FOR COOLING TOWER STRUCTURES The sapwood of all species is susceptible to decay, whereas the heartwood is highly durable. The greater permeability of the sapwood makes it superior from the standpoint of the preservative treatment used and should be endorsed rather than denounced. Checking of the sapwood is inevitable in such cases, and the checks will later extend in all likelihood to the heartwood as it dries. www.conradfp.com /cool.shtml   (1223 words)

Tourrée de l'Aubier Tourrée de l'Aubier is a soft, extremely creamy cheese with a woody taste stemming from the combination of spruce sapwood, milk and cream in strict compliance with traditions and know-how. Tourrée de l'Aubier uses spruce sapwood, a tree in the same family as fir, renowned for its aromatic properties. The strip of spruce sapwood around the Tourrée de l'Aubier comes from the forests of Eastern France. www.richesmonts.com /page_en/mar_pro/tourree.html   (250 words)

Sapwood area as an estimator of leaf area and foliar weight in cherrybark oak and green ash Sapwood area as an estimator of leaf area and foliar weight in cherrybark oak and green ash In contrast with other studies on upland oaks in relatively cool climates, we found that current sapwood area was only a fair estimator of foliar weight and leaf area in cherrybark oak and was a poor estimator in green ash. These results lead to the speculation that more of the sapwood than just the most recent one or two growth rings may be active in water conduction in bottomland species in warm climates. www.srs.fs.usda.gov /pubs/viewpub.jsp?index=3189   (790 words)

The Current State of Knowledge on Prosopis tamarugo   (Site not responding. Last check: 2007-10-27) Twenty sapwood test specimens and a similar amount of heartwood test specimens were obtained with this procedure for each age class (2) of both woody species (algarrobo and tamarugo). The sapwood of both species absorbs a considerably higher amount of water than the heartwood, with a tendency to increased permeability in wood from older trees (50 years of age). The purpose was to determine the chemical composition of heartwood, sapwood and bark of the stem's basal section, for 22- and 50-year old specimens of both species, the predominant ages at the area. www.fao.org /DOCREP/006/AD316E/AD316E18.htm   (3425 words)

Westpenn Hardwoods - Honduras Rosewood The sapwood is pale in color when freshly cut, but changes quickly to yellow upon exposure. The lighter colored sapwood is sharply demarcated from the darker heartwood. The heartwood is described as pinkish brown or purplish with darker and lighter bands. www.westpennhardwoods.com /shop/cart.php?target=category&category_id=674   (259 words)

About wood - Science of wood Sapwood plays and important part in a tree's living process. In general only the last few outside layers of sapwood are alive. The rest of the sapwood carries moisture from the roots to the leaves and store food for the tree. www.ggi-myanmar.com /wood/index.html   (483 words)

Troubled Times: Bow Back   (Site not responding. Last check: 2007-10-27) In many bows, the back is sometimes made in the sapwood of the timber, with the bulk of the bow in the heavy heartwood. Whether to use the sapwood or not is dependent mainly on the type of timber being used. If the sapwood is being left on to form the back of the bow, it should be thinned down so that it only comprises up to a maximum of about 1/3 of the thickness of the finished bow. www.zetatalk.com /food/tfood41d.htm   (321 words)

Woods A to E   (Site not responding. Last check: 2007-10-27) The sapwood is narrow, white in colour and clearly defined from the dark heartwood, which is dark brown to fl with prominent fl streaks (Information) The sapwood is narrow and creamy-white in colour and the heartwood is a uniform reddish-brown colour. The sapwood is light cream to white, the heartwood varies from light yellow to rich red with many other coloured streaks. www.countrywoods.co.za /woods_a_to_e.htm   (256 words)

Spicer, R.* and N. M. Holbrook.   (Site not responding. Last check: 2007-10-27) Although the range in longevity of xylem parenchyma is remarkable (cells live from just two to over 150 years), it is not known what causes their death nor whether the program of senescence is similar across conifers and angiosperms. TEM of parenchyma in both angiosperms and conifers indicates that ray cells in the innermost sapwood contain fewer mitochondria than cells in the outer sapwood, but that organelles (e.g., mitochondria, nuclei, ER) are otherwise normal in appearance. Future work will compare the cell morphology of parenchyma in the innermost sapwood with that of parenchyma subject to anoxia, one hypothesized agent of cell death in the transition from sapwood to heartwood. www.botany2002.org /section9/abstracts/6.shtml   (348 words)

Stora Enso   (Site not responding. Last check: 2007-10-27) Differences come up in cell structure: the cell wall in pine sapwood does not close completely, enabling fluid to move freely. The reddish colour of pine heartwood distinguishes it from the lighter pine sapwood. In spruce, there are no colour differences between the sapwood and heartwood. www.storaenso.com /CDAvgn/articlePrint/0,,2_EN-4705-5754-,00.html?pageURL=www.storaenso.com%2FCDAvgn%2Fmain%2F0%2C%2C1_EN-4705-5754-%2C00.html   (178 words)

Available Wood Species and Descriptions The sapwood is light-colored to nearly white and the heart wood varies from grayish or light brown, to pale yellow streaked with brown. The sapwood is creamy white with a slight reddish brown tinge and the heart wood varies from light to dark reddish brown. The sapwood of red oak is white to light brown and the heart wood is a pinkish reddish brown. www.chealwoodworking.com /woodspecies.htm   (309 words)

Dendrochronology of Panel Paintings Since sapwood (roughly 15 to 30 exterior rings immediately under the bark for oaks) contains sugars which make it subject to insect infestation, the practice in the Middle Ages and Renaissance was to remove some or all of it before painting. For oak, various sapwood estimates exist, ranging from 32±9 rings for Northern Ireland (Baillie, 1982); 20±6 or 26±7.5 rings for Germany (Huber, 1967; Hollstein, 1980); 15 rings +9/-6 for the Baltic (Wazny, 1990); and 26±9 rings for the Aegean (Kuniholm and Striker, 1987). No sapwood estimations are involved since the panels are painted on beech whose heartwood and sapwood rings cannot be distinguished one from another. www.arts.cornell.edu /dendro/painttex.html   (2681 words)

Sapwood   (Site not responding. Last check: 2007-10-27) Sapwood : the light-coloured wood that appears on the outer portion of across-section of a tree. Sapwood area as an estimator of leaf area and foliar weight in... Surrounding that is a collar of lighter-colored wood -- the sapwood -- with www.mongabay.com /reference/environment/Sapwood.html   (324 words)

sapwood — Infoplease.com As the tree grows in diameter, the innermost layers of sapwood become heartwood, and new sapwood is produced on the outside of the woody column. Variation of terpenes in sapwood and heartwood of loblolly pine: impact on VOC emissions from drying lumber samples.(volatile organic...... Distribution of terpenes in heartwood and sapwood of loblolly pine. www.infoplease.com /ce6/sci/A0843638.html   (278 words)

Fiber Mat Strength   (Site not responding. Last check: 2007-10-27) (density) - The fiber density is equivalent to the density of sapwood pipes or the stand sapwood basal area b, which according to the pipe model is directly proportional to the stand foliage biomass L. The current stand sapwood basal area b is thus the product of the maximum value at crown closure B and the current foliage biomass fraction L. (strength) - Fiber strength of sapwood is the root sapwood tensile strength S which has been repeatedly measured in various species by putting root sections in a vice and pulling on the ends until the roots break. students.washington.edu /fkrogsta/decision/roots/fiber-mat-strength.html   (537 words)

Appalachian Millworks -- Wood The heartwood of the ash tree is light gray or brown, while the sapwood is creamy white. Hickory is one of the heaviest, hardest and strongest woods in the U.S. The heartwood and sapwood of maple are both light creamy brown to white, with occasional light brown streaks. Oak's heartwood is pink to reddish brown, while the sapwood is a light gray. appalachianmillworks.com /wood.html   (417 words)

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