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农田生态系统土壤有机碳库及其影响因子

姜勇1;庄秋丽1,2;梁文举1   

  1. 1中国科学院沈阳应用生态研究所, 沈阳 110016;
    2中国科学院研究生院 , 北京 100039
  • 收稿日期:2006-04-03 修回日期:2006-10-26 出版日期:2007-02-10 发布日期:2007-02-10

Soil organic carbon pool and its affecting factors in farmland ecosystem

JIANG Yong1;ZHUANG Qiu-li1,2;LIANG Wen-ju1   

  1. 1Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016, China;
    2Graduate University of Chinese Academy of Sciences, Beijing 100039, China
  • Received:2006-04-03 Revised:2006-10-26 Online:2007-02-10 Published:2007-02-10

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。

关键词: 沙打旺, 组培根, 培养滤液, 化感作用

Abstract: 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, cul-tivation, crop selection, planting density, irrigation, fertilization, and other anthropogenic act-ivities 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.

Key words: Astragalus adsurgens, Cultured root, Culture filtrate, Allelopathy