胶州湾滨海湿地土壤有机碳时空分布及储量
发布时间：2018-11-09 18:50
【摘要】：在胶州湾选取芦苇、碱蓬、光滩及大米草4种典型滨海湿地类型,分季节和层次采集土壤样品,测定土壤有机碳含量,分析滨海湿地土壤有机碳的时空分布及储量.结果表明:垂直方向上,除光滩湿地沿剖面呈先减小后稍有上升的趋势外,其他湿地均随土壤深度的增加而减小;水平方向上,湿地土壤有机碳含量表现为大米草湿地光滩湿地碱蓬湿地芦苇湿地;季节上,湿地土壤有机碳含量表现为春季夏季秋季冬季.土壤有机碳含量与土壤含盐量、含水率、TN及C/N呈正相关,与土壤容重、pH值呈负相关.不同类型湿地土壤剖面有机碳密度表现为光滩湿地芦苇湿地碱蓬湿地,湿地类型对土壤有机碳含量和有机碳密度分布的影响存在一定差异.因储碳层厚度及储碳层内有机碳密度的差异,光滩湿地单位面积有机碳储量明显高于碱蓬和芦苇湿地,具有较大的储碳潜能,对研究区滨海湿地起到一定的碳汇作用.
[Abstract]:Four typical coastal wetland types, Reed, Suaeda salsa, Guang Tan and Rice Grass, were selected in Jiaozhou Bay. Soil samples were collected in different seasons and levels to determine soil organic carbon content, and the spatial and temporal distribution and storage of soil organic carbon in coastal wetland were analyzed. The results showed that, in the vertical direction, except for the trend of first decreasing and then slightly increasing along the section, the other wetlands decreased with the increase of soil depth. In the horizontal direction, the soil organic carbon content of the wetland is the Reed wetland of Suaeda salsa wetland, and the soil organic carbon content of the wetland is spring, summer, autumn and winter. Soil organic carbon content was positively correlated with soil salt content, moisture content, TN and C / N, but negatively correlated with soil bulk density and pH value. The soil profile organic carbon density of different types of wetland is the Reed wetland Suaeda marsh of Guangtan wetland, and the effect of wetland type on soil organic carbon content and organic carbon density distribution is different. Because of the difference of the thickness of carbon storage layer and the density of organic carbon in carbon storage layer, the storage of organic carbon per unit area of Guangtan wetland is obviously higher than that of Suaeda salsa and Reed wetland.
【作者单位】： 青岛大学环境科学与工程学院;
【基金】：国家自然科学基金项目(41101080) 山东省自然科学基金项目(ZR2014DQ028,ZR2015DM004)资助~~
【分类号】：S153.6
本文编号：2321271
[Abstract]:Four typical coastal wetland types, Reed, Suaeda salsa, Guang Tan and Rice Grass, were selected in Jiaozhou Bay. Soil samples were collected in different seasons and levels to determine soil organic carbon content, and the spatial and temporal distribution and storage of soil organic carbon in coastal wetland were analyzed. The results showed that, in the vertical direction, except for the trend of first decreasing and then slightly increasing along the section, the other wetlands decreased with the increase of soil depth. In the horizontal direction, the soil organic carbon content of the wetland is the Reed wetland of Suaeda salsa wetland, and the soil organic carbon content of the wetland is spring, summer, autumn and winter. Soil organic carbon content was positively correlated with soil salt content, moisture content, TN and C / N, but negatively correlated with soil bulk density and pH value. The soil profile organic carbon density of different types of wetland is the Reed wetland Suaeda marsh of Guangtan wetland, and the effect of wetland type on soil organic carbon content and organic carbon density distribution is different. Because of the difference of the thickness of carbon storage layer and the density of organic carbon in carbon storage layer, the storage of organic carbon per unit area of Guangtan wetland is obviously higher than that of Suaeda salsa and Reed wetland.
【作者单位】： 青岛大学环境科学与工程学院;
【基金】：国家自然科学基金项目(41101080) 山东省自然科学基金项目(ZR2014DQ028,ZR2015DM004)资助~~
【分类号】：S153.6
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