Trees normally grow one annual ring each year, with the growth sparse and dense with the change in spring and autumn, but sometimes an extra ring may appear in a year due to extreme weather, insect damage, wind damage, etc. These are called false rings, and can be distinguished from false rings because the transition from coarse to dense tissue is not very clear from an anatomical point of view. Source: Encyclopaedia Britannica Concise Encyclopedia About Encyclopaedia Britannica Concise Encyclopedia Information |
樹木は春秋の変化に従って生長に疎密を生じ,1年に1つずつの年輪を生じるのが正常であるが,気候の著しい不順や虫害,風害などにより,年間に余分の年輪を生じることがある。これを偽年輪というが,解剖学的にみるとそのあらい組織から密な組織への移り変りがあまりはっきりしていないので区別できる。
出典 ブリタニカ国際大百科事典 小項目事典ブリタニカ国際大百科事典 小項目事典について 情報 |
>>: Mirror with inscription of the year
The term "coal-bearing area" refers to ...
Born: July 28, 1929, Southampton, New York [Died] ...
An act issued by the British Parliament to the Nor...
…The structure of the building was such that, ent...
On December 19, 1597 (February 5, 1597), 26 Christ...
… The mountain range is home to many prehistoric ...
…The sculptures of the Nok culture show a fairly ...
U.S. Army Marshal. Supreme Commander of the Allie...
Hinduism is a form of artistic expression that re...
A large group of languages belonging to the sou...
…This is used in the exhaust pipes of automobile ...
A collective term for the group of muscles that m...
…Although he took naturalism too far, such as han...
...The Terauchi Cabinet was particularly aggressi...
… Greek goddess. Daughter of the sun god Helios, ...