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tree : a woody perennial plant having a single usually elongate main stem generally with few or no branches on its lower part — Webster
Tree is a perennial plant with an elongated stem, or trunk, supporting branches and leaves in most species. In some usages, the definition of a tree may be narrower, including only woody plants with secondary growth, plants that are usable as lumber or plants above a specified height. Trees are not a taxonomic group but include a variety of plant species that have independently evolved a woody trunk and branches as a way to tower above other plants to compete for sunlight. In looser senses, the taller palms, the tree ferns, bananas and bamboos are also trees. Trees tend to be long-lived, some reaching several thousand years old. The tallest known tree, a coast redwood named Hyperion, stands 115.6 m (379 ft) high. Trees have been in existence for 370 million years. — Wikipedia
Trees News -- ScienceDaily Read all about trees, including the latest research on many tree species, insect infestations, and the role of trees in ecology. Full articles, photos, free.
Forest carbon stocks have been overestimated for...
on October 16, 2018 at 3:01 pm
A formula used to calculate basic wood density has recently been corrected. Basic density is widely used to compute carbon storage by trees. Researchers estimate that the error in the initial formula resulted in an overestimation of forest carbon stocks, to the tune of almost 5 percent. […]
Why tropical forests are so ecologically diverse
on October 15, 2018 at 8:42 pm
The population of a tropical tree increases mostly in places where it is rare, a new study found. […]
Oldest fossil of a flying squirrel sheds new...
on October 9, 2018 at 3:50 pm
The oldest flying squirrel fossil ever found has unearthed new insight on the origin and evolution of these airborne animals. […]
Carbon emissions from Amazonian forest fires up...
on October 8, 2018 at 12:35 pm
Carbon losses caused by El Niño forest fires of 2015 and 2016 could be up to four times greater than thought. […]
Species-rich forests store twice as much carbon...
on October 4, 2018 at 6:39 pm
Species-rich subtropical forests can take up on average twice as much carbon as monocultures. An international research team has evaluated data from forests grown specifically for this purpose in China with a total of over 150,000 trees. The results speak in favor of using many different tree species during reforestation. […]