我国贫营养泥炭沉积的物质组成、理化特性及水化学环境分析

Compositon, Physiochemical Properties and Water-Chemistry Environment Analysis on the Oligotrophic Peat

泥炭藓是贫营养泥炭类型中的建群植物 ,由于生态水环境主要靠大气降水补给 ,少受其他水源的污染 ,可自然反映古降水、古湿度的情况 ,所以是古气候研究最理想的纤维素同位素测试材料之一。因此 ,弄清我国贫营养泥炭沉积的物质组成及水化学环境特征 ,具有重要意义。笔者根据多年来的国内外野外调查 ,结合收集到的资料 ,以东北大小兴安岭山地的泥炭藓贫营养泥炭地为基础 ,与美国、加拿大以及俄罗斯等国家的同类泥炭地相比较 ,对我国贫营养泥炭沉积的物质组成、理化特性及水化学环境做了系统的分析研究 ,并就此讨论了湿地保护中的一些实际问题 。

Sphagnum is main species in the oligotrophic peat. It is supplied mainly by meteoric water precipitation and to a lesser extiut by pollution of other water source, so it naturally reflects the paleo-precipitation and paleo-temperature and becomes one of materials for measuring cellulose isotope in studying paleoclimate. Therefore it is significant to investigate composition, physiochemical properties and water-chemical environment in the oligotrophic peat in China. The authors make a systematic analysis on the composition, physiochemical properties and water-chemical environment of the oligotrophic peat in the Daxing'anling Mountains and Xiaoxing'anling Mountains based on the field investigation in the native land and abroad. The authors also discuss some problems about the wetland protection, and put forward corresponding ways to deal with the situation.