海南岛红树林泥炭有机组成特征及其地质意义

海南岛红树林泥炭形成于热带泥炭聚积区,成炭质料为适盐性的红树林植物群落,堆积环境为泥炭坪,与陆相沼泽泥炭相比,这些特殊性必然反映到泥炭的有机组成上。红树林泥炭有机成份的研究将为合理开发利用海南的泥炭资源提供依据。红树林泥炭有机组成特征及其在泥炭化过程中的变化也必然为探讨泥炭化机理提供大量地质信息。

ORGANIC COMPOSITIONS AND GEOLOGICAL SIGNIFICANCE OF MANGROVE PEAT ON THE HAINAN ISLAND

Mangrove peat is common in the peat flat environments on the Hainan lsland in the tropic zone. The he peat-forming plants are a tidal haluphilous mangrove community. This paper deals in detail with the characteristics of organic elcincnts and organic compositions in the mangrove peat. As compared with those in the fresh-water peat, the organic elementary compositions are characterized by higher oxygen and sulphur and lower carbon contents, and the humic acid compositions by higher fulvie acid contents in the mangrove peat. The organic compositions consist of higher contents of cellulose, seini-cellulose and lignin. This paper also discusses the variations in organic matter during peatificatiun processes. For example, carbon and oxygen contents tend to change anomalously in shallow peat and cellulose and lignin to turn into humic acid rapidly in response to the increase of the buried depth. A plenty of useful information can be provided from the study for exploring the mechanism for peatification on tidal flats.