高浓度二氧化碳入侵对土壤理化性质的影响  

Effect of High Concentration of CO_2 Invasion on Soil Physical and Chemical Properties

作　　者：裴宇[1] 赵晓红[1] 邓红章[1] 李春荣[1] 韩枫[1] 张徽[2] 

机构地区：[1]长安大学旱区地下水文与生态效应教育部重点实验室,陕西西安710054 [2]中国地质调查局水文地质环境地质调查中心,河北保定071051

出　　处：《当代化工》2016年第4期682-686,共5页Contemporary Chemical Industry

基　　金：国家自然科学基金项目:1)超常压二氧化碳入侵粘土层的水岩作用及水文地质意义(41302208);2)二氧化碳入侵包气带的温度效应与模拟(41302207);3)二氧化碳入侵包气带对地表植物的影响和环境指示(41302286);4)二氧化碳地质储存环境影响与监测技术方法研究(12120113006400)

摘　　要：在地质储存CO_2（GCS）泄漏对生态环境的影响中,土壤作为生态系统中物质与能量交换的主要介质,其理化性质的变化研究尤为重要。采用人工模拟CO_2泄漏地表的方式,并分析土壤pH值、总有机碳、氮、磷、钾、水溶性盐浓度的变化及地表植物响应。结果表明：CO_2入侵使土壤总有机碳相比于对照增加了1.56%-43.75%,总氮下降了0.88%-13.25%,氨氮与硝氮也同比下降,磷、钾、水溶性盐总体也是减少的,但土壤pH值有所上升,且各植物长势均较好,尤其是豌豆与萝卜的生长较好。结论：高浓度CO_2入侵会对土壤理化性质产生一定影响,而且对植物的生长有促进作用。In the impact of the leakage of CO_2 geological storage on the ecological environment, especially, the soil, it is the main medium of the exchange of substances and energy in ecological system, so studying the soil physical and chemical properties are very significant. This experiment artificially simulated the leakage of CO_2 to the soil surface, and then the changes in soil organic carbon, nitrogen, phosphorus, potassium and water-soluble salts and the responses of plants were analyzed. The results show that, after the invasion of CO_2, compared with the controlled area, the soil total organic carbon increases by 1.56%-43.75%, total nitrogen decreases by 0.88%-13.25%, ammonia and nitrate reduce as well, phosphorus, potassium and water-soluble salts also decline in general, while the pH of the soil is up,and every plant grows well, particularly, peas and radish. Conclusion： the invasion of high concentration of CO_2 has some impacts on soil physical and chemical properties, in addition, can promote the growth of plants.

关 键 词：地质储存CO2 高浓度CO2入侵 土壤理化性质 植物响应 

分 类 号：X131.3[环境科学与工程—环境科学]