Bambusa tulda of Bangladesh and adjoining India has tested as high as 60,000 pounds (27,000 Kg or 27 tonnes) per square inch in tensile strength. Some bamboos have displayed remarkable strength under test conditions. Bamboo's strength-to-weight ratio is similar to timber, and its strength is generally similar to a strong softwood or hardwood timber. Bamboo, like wood, is a natural composite material with a high strength-to-weight ratio useful for structures. This rapid growth and tolerance for marginal land, make bamboo a good candidate for afforestation, carbon sequestration and climate change mitigation.īamboo is versatile and has notable economic and cultural significance in South Asia, Southeast Asia, and East Asia, being used for building materials, as a food source, and as a raw product, and depicted often in arts, such as in bamboo paintings and bambooworking. Growth up to 47.6 inches (156 centimeters) in 24 hours has been observed in the instance of Japanese giant timber bamboo ( Phyllostachys bambusoides). Certain species of bamboo can grow 91 centimetres (36 inches) within a 24-hour period, at a rate of almost 40 millimeters ( 1 + 1⁄ 2 in) an hour (equivalent to 1 mm every 90 seconds). īamboos include some of the fastest-growing plants in the world, due to a unique rhizome-dependent system. The absence of secondary growth wood causes the stems of monocots, including the palms and large bamboos, to be columnar rather than tapering. The dicotyledonous woody xylem is also absent. In bamboo, as in other grasses, the internodal regions of the stem are usually hollow and the vascular bundles in the cross-section are scattered throughout the walls of the culm instead of in a cylindrical cambium layer between the bark ( phloem) and the wood ( xylem) as in Dicots and Conifers. The origin of the word "bamboo" is uncertain, but it probably comes from the Dutch or Portuguese language, which originally borrowed it from Malay or Kannada. By contrast, the culms of the tiny bamboo Raddiella vanessiae of the Kaieteur Plateau in French Guiana are only 10–20 millimeters in length by about two millimeters in width. and Arthrostylidium schombergkii with lower internodes up to 5 meters in length, exceeded in length only by Papyrus. Kinabaluchloa wrayi has internodes up to 2.5 meters in length. The internodes of bamboos can also be of great length. Giant bamboos are the largest members of the grass family, in the case of Dendrocalamus sinicus individual culms reaching a length of 46 meters, up to 36 centimeters in thickness and a weight of up to 450 kilograms. "Bamboo" in ancient seal script (top) and regular script (bottom) Chinese charactersīamboos are a diverse group of mostly evergreen perennial flowering plants making up the subfamily Bambusoideae of the grass family Poaceae.
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