Wang Xiao Tong, Kong Fan Long, Xi Min, Li Yue, Sui Xiao Min
College of Environmental Science and Engineering, Qingdao University, Qingdao 266071, Shandong, China.
Ying Yong Sheng Tai Xue Bao. 2018 Jun;29(6):2043-2050. doi: 10.13287/j.1001-9332.201806.037.
We examined the dissolved inorganic carbon (DIC) content, ion content, and soil physi-cal and chemical properties in Dagu River and Yanghe River estuary wetland of Jiaozhou Bay. Soil samples were collected by stratified sampling in the mudflat paralleled to the coastal zone and the river flat perpendicular to the coastal zone. Duncan method and Pearson correlation analysis were used to investigate the characteristics of soil DIC distribution and its driving factors. The results showed that the scouring action of water bodies led to the lowest content of soil DIC in the river estuary of mudflat, which showed an increasing trend with the increases of distance from the estuary. In river flat, the soil DIC content first decreased and then increased with the distance from the sea, which was influenced by human activities. Invasion of Spartina alterniflora significantly decreased soil DIC content, with its root transformation being the main reason for such decreases. The farming activities changed the environmental factors of aquaculture pond, and then changed the distribution of soil DIC. The surface soil of the pond had higher DIC content than that of the mudflat, while the other soil layers had lower DIC content than that of the mudflat. Soil DIC content was significantly positively correlated with soil salt content and total inorganic carbon content, and negatively correlated with soil pH.
我们对胶州湾大沽河和洋河河口湿地的溶解无机碳（DIC）含量、离子含量以及土壤理化性质进行了研究。土壤样本通过在与海岸带平行的泥滩和与海岸带垂直的河漫滩进行分层采样获取。采用邓肯法和皮尔逊相关性分析来研究土壤DIC分布特征及其驱动因素。结果表明，水体的冲刷作用导致泥滩河口处土壤DIC含量最低，且随着距河口距离的增加呈上升趋势。在河漫滩，土壤DIC含量随距海距离先降低后升高，这受人类活动影响。互花米草入侵显著降低了土壤DIC含量，其根系转化是含量降低的主要原因。养殖活动改变了养殖池塘的环境因素，进而改变了土壤DIC的分布。池塘表层土壤的DIC含量高于泥滩，而其他土层的DIC含量低于泥滩。土壤DIC含量与土壤盐分含量和总无机碳含量显著正相关，与土壤pH值负相关。
