保护性耕作及其对土壤有机碳的影响  

Conservation tillage and its effect on soil organic carbon

作　　者：王燕[1] 王小彬[1] 刘爽[1] 梁二[1] 蔡典雄[1] 

机构地区：[1]中国农业科学院农业资源与农业区划研究所农业部植物营养与养分循环重点实验室,北京100081

出　　处：《中国生态农业学报》2008年第3期766-771,共6页Chinese Journal of Eco-Agriculture

基　　金：国家重点基础研究发展计划(937计划)项目(2007CB109305);国家高技术研究发展计划(863计划)项目(2006AA100220);科技部国际合作项目(2006DFB32180);国家自然科学基金项目(40571151);土壤有机质提升试点项目(125161D721336);农业立体污染防治科学创新条件建设项目(140102-9)资助

摘　　要：本文把保护性耕作的发展划分为3个阶段,系统总结了保护性耕作技术发展的历程与趋势,并结合我国实际情况,论述了我国保护性耕作研究与应用存在的不足及其与国外的差距,进一步探讨了保护性耕作对土壤有机碳的影响。指出我国在该领域的研究应侧重以下几方面:加强研究保护性耕作对生态环境的作用,寻求有效的固碳途径和管理措施;探讨农田土壤保护性耕作系统能流-碳流循环过程及其动态响应,实现农田系统碳汇/源科学管理调控;采用G IS技术结合土壤有机碳动态模拟模型,评价保护性耕作区域尺度生态效益。This paper introduces the types of conservation tillage, traces development history of conservation tillage and forecasts development trend of this agronomic practice. In the context of China＇s agricultural development, the problems of conservation tillage expansion and differences between indigenous and foreign practices of conservation tillage are discussed. The article also suggests that the following should be emphasized in the future researches on the conservation tillage ： the effect of conservation tillage on soil organic carbon （SOC） as well as ecological environment with strengthened knowledge-base, the effective carbon sink/ source management, the processes and dynamic responses of energy and carbon flow for improved carbon sink/source management, and integration of GIS and SOC dynamics simulation model in the evaluation of ecological effect of conservation tillage on regional scales.

关 键 词：保护性耕作 土壤有机碳 模型模拟 GIS 区域尺度 

分 类 号：S316[农业科学—作物栽培与耕作技术] S153.621[农业科学—农艺学]