…Under conditions of water saturation and oxygen deficiency, the activity of underground animals and microorganisms is suppressed, so the decomposition of plant remains does not proceed completely, and yellowish brown or dark brown plant remains accumulate, with plant tissue still visible to the naked eye. This process is called peat accumulation, and land that still has a peat layer of 20 cm or more after drainage is generally called peat land. Peat accumulation begins when mud accumulates on the bottom of a swamp or lake, and siltation progresses to a depth deep enough for emergent plants to grow. … *Some of the terminology that refers to "peat accumulation" is listed below. Source | Heibonsha World Encyclopedia 2nd Edition | Information |
…水で飽和されて酸素不足となった条件下では地中動物や微生物の活動が抑制されるため,植物遺体の分解が完全には進まず,まだ植物の組織が肉眼で識別できる程度に腐朽した黄褐色ないし暗褐色の植物遺体が集積する。この過程を泥炭集積作用peat accumulationといい,一般に排水後なお20cm以上の泥炭層を有する土地を泥炭地peat landという。泥炭の集積は沼沢地や湖沼底に泥が堆積し,抽水植物が十分生育できる水深になるまで埋積化が進行したときに始まる。… ※「peat accumulation」について言及している用語解説の一部を掲載しています。 出典|株式会社平凡社世界大百科事典 第2版について | 情報 |
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