FIR FLOOR - FLOOR
Fir Floor - Wood Floor Installers - Huatong Access Floor.
- A level area or space used or designed for a particular activity
- the inside lower horizontal surface (as of a room, hallway, tent, or other structure); "they needed rugs to cover the bare floors"; "we spread our sleeping bags on the dry floor of the tent"
- shock: surprise greatly; knock someone's socks off; "I was floored when I heard that I was promoted"
- a structure consisting of a room or set of rooms at a single position along a vertical scale; "what level is the office on?"
- All the rooms or areas on the same level of a building; a story
- The lower surface of a room, on which one may walk
- An evergreen coniferous tree with upright cones and flat needle-shaped leaves, typically arranged in two rows. Firs are an important source of timber and resins
- any of various evergreen trees of the genus Abies; chiefly of upland areas
- Firs (Abies) are a genus of 48–55 species of evergreen conifers in the family Pinaceae. They are found through much of North and Central America, Europe, Asia, and North Africa, occurring in mountains over most of the range.
Influences of stand composition and age on forest floor processes and chemistry in pure and mixed stands of Douglas-fir and paper birch in interior British ... article from: Forest Ecology and Management]
This digital document is a journal article from Forest Ecology and Management, published by Elsevier in . The article is delivered in HTML format and is available in your Amazon.com Media Library immediately after purchase. You can view it with any web browser.
The influence of stand composition and age on forest floor chemical properties, nitrogen availability, and microbial activity was examined in mixed and pure stands of Douglas-fir (Pseudotsuga menziesii) and paper birch (Betula papyrifera). Decomposition of Douglas-fir and birch litter over two years as well as annual litter input was also measured. Mixed and pure stands of each species aged 10-25, 50-65 and >85 years old were selected in the Interior Cedar Hemlock (ICH) zone of southern interior British Columbia. Significantly more total N was mineralized in the forest floor of pure birch compare to that of pure Douglas-fir stands while forest floor of mixed species stands had intermediate N mineralization values. When sampling times were pooled forest floor N mineralization was lowest in the young stands compared to the older stands. Stand composition did not significantly affect litter decomposition were found in litter decomposition, microbial respiration and biomass. Stand age, however, did affect these parameters significantly. More birch litter mass was lost in young stands than in their older counterparts while the opposite trend was observed for fir litter. Generally, lower basal respiration, microbial biomass and C"m"i"c/C"o"r"g was found in young compared to older stands. Concentrations and contents of forest floor total N and exchangeable K and Mg, and pH under pure birch were consistently higher compared to pure Douglas-fir. While forest floor total C, available P contents, exchangeable K and Mg concentrations were lowest in young stands, no differences were observed for total N and exchangeable Ca. All litter nutrient concentrations and contents were highest in pure birch stands. No clear trends could be discerned in litter nutrient concentration data among stand ages, although when converted to nutrient contents, there was a general increase with stand age. Both stand type and age had significant effects on forest floor properties and processes suggesting that stand age is another factor to evaluate when assessing the influence of forest composition on forest floor processes and chemistry. In terms of the effect of mixture, the data indicated that the maintenance of paper birch in mixed stands in these forest may have some effect on nutrient availability and status. atus.
Douglas Fir Hardwood Flooring
Douglas Fir has the highest strength to weight ratio of any wood species. Primarily found in the western US and Canada, Douglas Fir is frequently use for dimension lumber in lower grades, and for interior finish work in upper grades. Douglas Fir clears are renowned for their strength, durability, and ability to stand up to the elements. In addition to its strength, Douglas Fir has rich coloring with the heartwood aging to a dark tan-red color and the sap wood remaining light tan. Vertical grain, clear Douglas Fir is widely considered to be one of the finest materials available for trim, mouldings, doors, windows, exposed beams, ceilings and paneling. Douglas Fir CVG flooring has been used throughout the US since the 1800's and is often found in classic historic homes.
Douglas Fir Hardwood Flooring
The Douglas Fir can be found in abundance across the continent of North America, serving as a familiar sight for millions. Used often as a staple for construction, Douglas Fir is also renowned for its strength and durability. In addition to its strength, Douglas Fir has a rich, visually soothing color combination with the heartwood varying from creamy yellowish-brown for older trees to light red for younger trees and complimented by pale white tones.
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