摘要
土壤有机碳(SOC)的数量和质量在很大程度上与维持和提高土壤肥力密切相关。农田生态系统土壤碳库研究一直是农业、生态和环境领域的一个主要方向。土地利用、耕作、作物类型、种植密度、灌溉、施肥以及其他人为活动等,对农田生态系统土壤有机碳库的变化均能产生影响。本文综合评述了农田生态系统土壤有机碳库及其影响因子,土壤碳截获潜力,维持和提高土壤有机碳库的措施,以及农田土壤碳截获在温室气体减排及气候变化中的潜在作用等,最后提出了农田生态系统土壤有机碳库研究的主要方向。
The maintenance and improvement of soil fertility greatly rest with the quantity and quality of soil organic carbon ( SOC ), while the study of SOC pool in farmland ecosystem is a main research direction of agricultural, ecological, and environmental sciences. Land use, cultivation, crop selection, planting density, irrigation, fertilization, and other anthropogenic activi- ties all affect the dynamics of SOC pool. This paper summarized the research advances on the SOC pool and its affecting factors in farmland ecosystem, soil C sequestration potential, measures for maintaining and improving SOC pool, and potential roles of farmland soil C sequestration in mitigating greenhouse gases emission and climate change. The future research directions of SOC pool in farmland ecosystem were also put forward.
出处
《生态学杂志》
CAS
CSCD
北大核心
2007年第2期278-285,共8页
Chinese Journal of Ecology
基金
国家重点基础研究发展规划项目(2005CB121105)
国家自然科学基金资助项目(30670379)。
关键词
农田生态系统
土壤有机碳
土壤质量
碳截获
气候变化
farmland ecosystem
soil organic carbon
soil quality
carbon sequestration
climate change.