background preloader

Trees

Facebook Twitter

Waves of Grain. Panel-2. Pine Bark and Wood. "Diligence is the mother of good luck.

Pine Bark and Wood

" -- English proverb Pine Bark and Wood "Barking" up a Loblolly pine -- Pearson Creek "There is no excellent beauty that hath not some strangeness in proportion. " -- Francis Bacon, Essays: Of Beauty Production of wood and bark begins in the cambium, a one cell thick layer beneath the inner bark. This remarkable layer of cells produces both the tissue destined to become the bark and the wood. On the inner side, the cambium produces the xylem or sapwood which has three structural components: (a) trachieds which are channels derived from long spindle-shaped cells and which transport water upward from the roots to the leaves. Active Anti-erosion Protection Strategy in Tamarisk (Tamarix aphylla) : Scientific Reports.

Sample collection Tamarisk was collected in Baicheng City, Jilin Province, China (121°–124°22′ E; 44°13′–46°18′ N).

Active Anti-erosion Protection Strategy in Tamarisk (Tamarix aphylla) : Scientific Reports

The climate in Baicheng City is temperate continental monsoon in the Eurasian Centre. The average annual number of gale weather days is 24, and the average annual number of days with gale (less than grade 8) weather is 47. The annual average wind speed is up to 3.7 m/s39. The zonal soil types include gray desert soil, sandy clay loam, and sand soil. None of the trees completely grew vertically. Erosion test The erosion wear test system was designed to study erosion wear according to the American Society for Testing Materials (ASTM)–G76–83 standard23.

Nanoindentation experiments. Popular Science Monthly/Volume 45/July 1894/Sunshine Through the Woods. {{fsx90By BYRON D.

Popular Science Monthly/Volume 45/July 1894/Sunshine Through the Woods

HALSTED.}} THE title above might suggest a forest that has been shot through by the light of day, or some delightful dell where the rays of the sun make every spot enchanting. Quite otherwise, the lines to follow deal with the printing of pictures of sections of woods by means of the direct sunlight, and some of the points of structure thus brought to view. If any object through which the light passes unequally in its various parts be brought close against a sensitized paper used by photographers in printing pictures from their negatives, it is evident that an impression will be produced. This print will be a negative, or, in other words, the dark parts in the subject will be light and the light parts dark. The first essential in getting prints of woods is to obtain uniformly thin sections of the wood.

Fig. 1. — Section of Papaw Wood. First-of-a-kind tension wood study broadens biofuels research. Taking a cue from Mother Nature, researchers at the Department of Energy's BioEnergy Science Center have undertaken a first-of-its-kind study of a naturally occurring phenomenon in trees to spur the development of more efficient bioenergy crops.

First-of-a-kind tension wood study broadens biofuels research

Tension wood, which forms naturally in hardwood trees in response to bending stress, is known to possess unique features that render it desirable as a bioenergy feedstock. Although individual elements of tension wood have been studied previously, the BESC team is the first to use a comprehensive suite of techniques to systematically characterize tension wood and link the wood's properties to sugar release.

Plant sugars, known as cellulose, are fermented into alcohol for use as biofuel. Henry Cowell. Everyone in Santa Cruz knows the Redwood Grove Loop Trail in Henry Cowell Redwoods State Park: It’s where you take out-of-town guests for a short, easy Santa Cruz nature walk guaranteed to amaze.

Henry Cowell

Towering old-growth coast redwoods, some of them 1800 years old, soar nearly 300 feet, blocking out the sun so virtually the only understory is redwood sorrel and lush, primitive ferns. But the Redwood Grove Loop is just the beginning. The more time you spend in Henry Cowell, the more you may come to see it as the home of the best hiking in Santa Cruz County. (Horses and bikes are welcome but limited to certain routes.) A good 15 miles of trail traverse 1750 hugely diverse acres, dipping into fragrant riparian woodland and crossing creeks, climbing up through mixed evergreen forest and tracing routes through the rare Santa Cruz sandhills habitat with its stands of majestic Ponderosa pine and views of the Monterey Bay.

Looking to camp at Henry Cowell State Park?