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High Forest is a type of forest originated from seed or from planted seedlings. In contrast to a low forest〔(【引用サイトリンク】title=SAFnet Dictionary - Definition For () )〕 (also known as a coppice forest), a high forest usually consists of large, tall mature trees with a closed canopy.〔(【引用サイトリンク】url=http://dictionaryofforestry.org/dict/term/high_forest )〕 High forests can occur naturally or they can be created and/or maintained by human management. Trees in a high forest can be of one, a few or many species. A high forest can be even-aged or uneven-aged.〔(【引用サイトリンク】title=SAFnet Dictionary - Definition For () )〕 Even-aged forests contain trees of one, or two successional age classes (generations). Uneven-aged forests have three or more age classes represented. High forests have relatively high genetic diversity compared with coppice forests, which develop from vegetative reproduction. A high forest can have one or more canopy layers. The understory of a high forest can be open (i.e. – park-like, easy to see and walk through), or it can be dense. A high forest's understory can have high or low vegetation species diversity. ==See also== *Coppicing *Ecological thinning *Pollarding *Silviculture 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「High forest (woodland)」の詳細全文を読む スポンサード リンク
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