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为了研究黄河三角洲全新世不同古环境中的碳埋藏速率,于2007年在研究区布设了一口30.3m浅钻,以对其进行了沉积学观测以及含水量、有机碳、总碳和营养成分测试分析.通过地层分析,将其全新世地层划分为8种沉积环境.运用历史地理学和沉积地质学综合分析方法对现代黄河三角洲沉积环境中部分层位进行了精确的年代划分,其他层位也进行了年代推测.同时利用确定的年代计算了不同沉积环境碳的埋藏速率.结果表明:总碳和有机碳与各营养元素都呈很好的线性相关;沉积物的沉积速率是有机碳和总碳埋藏速率的主控因素;虽然沉积物Corg浓度相对较低,但由于其高沉积速率,Corg的平均埋藏速率达到1 331g/(m2·a),远高于世界其他高Corg浓度的湿地,因此是很好的碳汇地质体.
In order to study the carbon burial rate in different paleoenvironmental environments of the Holocene in the Yellow River Delta, a shallow 30.3m drill was drilled in the study area in 2007 to conduct sedimentological studies and tests of water content, organic carbon, total carbon and nutrients According to the stratigraphic analysis, the Holocene strata are divided into eight sedimentary environments, and the historical stratigraphy and sedimentary geology comprehensive analysis method are used to accurately divide the ages of some strata in the sedimentary environment of the Yellow River Delta. And the dating of carbon deposition in different sedimentary environments was calculated.The results showed that there was a good linear correlation between total carbon and organic carbon and nutrients and the deposition rate of sediment was organic carbon and total carbon Although the Corg concentrations in sediments are relatively low, the average burial rate of Corg reaches 1 331g / (m2 · a) due to its high sedimentation rate, which is much higher than that of other high Corg concentrations in the world. So it is a good carbon sink geological body.