天津滨海盐碱地土壤碳酸盐转化的研究

Soil inorganic carbon played an important role on the global carbon cycle．Compared to the wide and deep research of soil organic carbon，the research on soil inorganic carbon just had been studied for a short time．The main research was on the progress of the global soil inorganic carbon storage and distribution，transformation process and influencing factors，restore methods and carbonate．There was also lacking systematic connection between them．The Saline-alkali soil in coastal area of Tianjin selected in this study as an example, studies the impacts of different lands(cropland/forest/grass/bare soil/brine pan)on soil carbonate conversion, and analyzes the main influence factors, and specifys the relation between soil carbonate conversion and biological activities of coastal wetlands in different land cover types (forest/grass/Beach/bare soil) and could provide valuable theoretical bases for the regional soil carbon sequestration capacity, thereby enhance the understanding of the role of transformation of soil carbonate in soil carbon cycle.

土壤无机碳在全球碳循环中占重要位置。相较于土壤有机碳广泛而深入的研究，无机碳的研究才开始不久。研究主要集中在全球土壤无机碳储量及分布，转移过程及影响因素，无机碳固存及土壤碳酸盐研究等方面，还未形成系统性。本研究以天津滨海新区盐碱地为研究对象，研究不同土地利用方式（耕地/林地/草地/裸地/盐田）对土壤碳酸盐转换的影响，并分析主要影响因素，明确滨海湿地不同土地覆盖类型（林地/草地/滩涂/裸地）土壤碳酸盐转化与生物活动的关系，以了解区域性土壤碳截存能力，从而增强人们对土壤碳酸盐碳在土壤碳转化过程中作用的了解。