The growth rings of an unknown tree species, at Bristol Zoo, England.

Growth rings of Pinus taeda.

Pine stump showing growth rings.

Growth rings (or "tree rings" or "annular rings") can be seen in a horizontal cross section cut through the trunk of a tree. Visible rings result from the change in growth speed through the seasons of the year, thus one ring usually marks the passage of one year in the life of the tree. The rings are more visible in temperate zones, where the seasons differ more markedly. Image File history File linksMetadata Download high resolution version (1800x1347, 646 KB) The growth rings of an unknown tree species, at Bristol Zoo, Bristol, England. ... Image File history File linksMetadata Download high resolution version (1800x1347, 646 KB) The growth rings of an unknown tree species, at Bristol Zoo, Bristol, England. ... Pinus taeda (loblolly pine) cross section, Cheraw, SC Image copyleft: Image taken by me, released under GFDL Pollinator 13:19, Jun 6, 2004 (UTC) ( ) File history Legend: (cur) = this is the current file, (del) = delete this old version, (rev) = revert to this old version. ... Pinus taeda (loblolly pine) cross section, Cheraw, SC Image copyleft: Image taken by me, released under GFDL Pollinator 13:19, Jun 6, 2004 (UTC) ( ) File history Legend: (cur) = this is the current file, (del) = delete this old version, (rev) = revert to this old version. ... Binomial name Pinus taeda The Loblolly Pine (Pinus taeda) is one of the pines native to the southeast United States. ... Download high resolution version (2048x1536, 1129 KB) Wikipedia does not have an article with this exact name. ... Download high resolution version (2048x1536, 1129 KB) Wikipedia does not have an article with this exact name. ... Cross section may refer to the following In geometry, Cross section is the intersection of a 3-dimensional body with a plane. ... Pinus taeda cross section showing annual growth rings (Cheraw, South Carolina) In botany, trunk refers to the main structural member of a tree that is supported by and directly attached to the roots and which in turn supports the branches. ... The coniferous Coast Redwood, the tallest tree species on earth. ... A season is one of the major divisions of the year, generally based on yearly periodic changes in weather. ... In geography, temperate latitudes of the globe lie between the tropics and the polar circles. ...

The inner portion of a growth ring is formed early in the growing season, when growth is comparatively rapid (hence the wood is less dense) and is known as "early wood" or "spring wood" or "late-spring wood". The outer portion is the "late wood" (and has sometimes been termed "summer wood", often being produced in the summer, though sometimes in the autumn) and is more dense. "Early wood" is used in preference to "spring wood", as the latter term may not correspond to that time of year in climates where early wood is formed in the early summer (e.g. Canada) or in autumn, as in some Mediterranean species. The Mediterranean Sea is an intercontinental sea positioned between Europe to the north, Africa to the south and Asia to the east, covering an approximate area of 2. ...

In trees like white pines there is not much contrast in the different parts of the ring, and as a result the wood is very uniform in texture and can be said to have a mild grain (visually). White Pine may refer to: Trees within the Pinus classification Eastern White Pine, a tree native to North America. ...

Adequate moisture and a long growing season results in a wide ring. A drought year may result in a very narrow ring. Trees from the same region will tend to develop the same patterns of width for a given period. For the entire period of a tree's life, a year-by-year record or ring pattern is formed that in some way reflects the climatic conditions in which the tree grew.

Growth rings are the basis for the historical dating science of dendrochronology. Pinus taeda Cross section showing annual rings, Cheraw, South Carolina Pine stump showing growth rings Dendrochronology or tree-ring dating is the method of scientific dating based on the analysis of tree ring patterns. ...

Growth rings are responsible for the grain and knots visible in wood. A tree trunk as found at the Veluwe, The Netherlands Wood derives from woody plants, notably trees but also shrubs. ...