我国东北地区沼泽湿地碳储量估算

Estimation of Carbon Storage in Wetlands in Northeast China

为了精确估算东北地区沼泽湿地碳储量,从已公开发表的论文及著作中收集东北地区沼泽湿地柱芯数据,同时在东北地区新采集一批湿地柱芯作为补充,共134个沼泽湿地柱芯,并依据第二次全国湿地资源调查报告,重新评估了东北地区沼泽湿地碳储量.结果表明:东北地区沼泽湿地总面积约为82 870 km^2,其碳储量为4.34 Gt;长白山、大兴安岭和小兴安岭等山地沼泽湿地碳储量约占东北地区沼泽湿地碳储量的80%;且东北地区沼泽湿地单位面积碳密度为12.49~95.64 kg·m^-2,变化范围较大.影响沼泽湿地碳储量估算不确定性的因子主要为湿地沉积层深度、干容重和有机碳含量,加强这3种基础数据的采集将更有助于精确估算东北地区沼泽湿地碳储量.

To accurately estimate the carbon(C)storage of wetlands in Northeast China,A dataset of 134 peat dates were compiled from previously published literature,unpublished data sources,and our own new dating results across the northeast China.Based on the collection and self-testing of 134 wetland cores,and according to the second national wetland resources survey data,the C storage of wetlands were re-estimated in Northeast China.The results showed that the total wetlands area and C storage within this region is 82 870 km 2 and 4.34 Gt,respectively,and about 80%of the C is contained in Mountain wetlands,such as Changbai mountains,Great Khingan mountains and Lesser Khingan mountains.The C density per unit area of wetlands in Northeast China is 12.49~95.64 kg·m^-2,which range change relatively larger.The factors affecting the uncertainty of wetlands C storage are mainly the wetlands sediment depth,dry bulk density and organic carbon content.Strengthening the collection of these basic data will be more conducive to accurately estimate the C storage of wetlands in Northeast China.