农田生态系统土壤有机碳库及其影响因子  

Soil organic carbon pool and its affecting factors in farmland ecosystem.

作　　者：姜勇[1] 庄秋丽[1,2] 梁文举[1] 

机构地区：[1]中国科学院沈阳应用生态研究所 [2]中国科学院研究生院,北京100039

出　　处：《生态学杂志》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)。

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.

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 

分 类 号：S154[农业科学—土壤学]