【摘要】 <正> 我国幅员辽阔,自然条件复杂,泥炭资源比较丰富。北起黑龙江,南至海南岛,东濒滨海大陆架,西至西藏高原,泥炭分布广而零散,且裸露泥炭多于埋藏泥炭。裸露泥炭集中分布在大小兴安岭、长白山、三江平原、若尔盖高原、云贵高原西部、新疆的博斯腾湖滨以及西藏高原南部;埋藏泥炭主要分布在东部和南部沿海平原、长江中下游平原、华北平原、华中与华南的低山丘陵、云贵高原等地。本文根据一些泥炭矿点的考察和分析化验资料,对我国泥炭的组成、特性以及全新世以来泥炭的形成和发育初步探讨如下。更多还原

【Abstract】 The basic characteristics of The peat in China are as follows:Most of the peatbelong to the herb peat type with rich-nutrition,having intermediate degree of de-composition with a high ash and humic acid content,an abundent quantity ofnitrogen,but a low content of bitumin.In China paludification may be summarized into four types:Water-body pa-ludification:meadow paludification;meadow paludification;forest land paludifica-tion;and frozen soil paludification.Based on the radioactive isotope C¹⁴ dating,result of sporepollen analysis andstratigraphic data,Holocene had been divided into three peak periods of peat dev-elopment with wide distribution and rapid accumulation of peat.The first peakperiod,datad 10300 to 9000 years BP.,was the local peatland growing period.The second peak period,dated 6000—4700 years BP.,and the third peak period,dated 3400—2000 years BP.,were the peatland widely and vigorously growingperiods.The peaks of peat accumulation appeared in the periods when the climatechanging from warm to cold,or from cold to warm.Because of the vast land and complicate landform in China,the last meltingtime of the continental glacier varied with different places,the time when peatbegan to accumulate was also different,The general tendency was that the time ofpeat accumulation in the south was earlier than in the north,in plains than in mo-untains,and in coastal areas than in inland.更多还原