The Impact of Animal Excreta Addition in the Acid Soil on the Dissolution of Carbonate Rock and A Field Study in a Karst Agricultural Area, SW China

摘要：

Fertilization, as an important agricultural activity, exerts an influence on fluxes of carbon both between and within ecosystems. Some studies results by using hydrochemical methods revealed that nitrogen fertilizer application accelerate the dissolution of carbonate rock but decrease riverine alkalinity. Animal excreta as manure used widely can elevate soil CO2 due to microbial decomposition of the high organic matter content of animal excreta. The elevated CO2 can accelerate carbonate weathering in alkaline soil such as lime soil. However, in acid soil, whether carbonate weathering can be quickened by the elevated CO2 due animal excreta addition is yet poorly known.

关键词： Carbonate weathering Animal axcreta Acid soil Karst area Source/sink of CO2

作者: Chao Song Changli Liu Yun Zhang Hongbing Hou Junkun Wang

作者单位: Institute of Hydrogeology and Environmental Geology, Chinese Academy of Geological Sciences,Shijiazhuang, 050061, China

会议类型: 国际会议

会议名称: The 2nd International Workshop on Carbon Sequestration and Climate Change Mitigation in Agriculture(第二届农业土壤固碳减排与气候变化国际学术研讨会)

会议地点: 北京

会议语种:英文

页码: 44-45

在线出版日期: 2010-06-27（万方平台首次上网日期，不代表论文的发表时间）