摘要
农田土壤作为陆地生态系统的重要组成部分,是受人为活动干扰严重但又可在较短时间内调节的碳库,在全球碳循环中占据着非常重要的地位。深入探讨分析农田土壤有机碳库及其影响因素对全球生态系统碳平衡以及农田土壤利用的可持续性都具有十分重要的意义。笔者以农田土壤有机碳库基本问题为核心,对国内外有关农田土壤有机碳库的分类与组成、有机碳固定潜力以及有机碳固定影响因素的研究进展进行了总结。最后指出今后的重点研究方向包括全球不同地区农田土壤有机碳的固定周转机制、有机碳固定潜力,农田土壤有机碳库受各种因素的影响程度,农田土壤碳循环过程与地球表层过程的耦合机制以及如何设计合理有效的农田管理措施以达到最大的固碳潜力等几个方面。
As an important component of terrestrial ecosystem, cropland ecosystem is interfered mainly byhuman disturbance, but it can self-adjust in a short time and plays an essential role in the global carbon cycle.It is valuable to study the effect of farmland soil organic carbon pool and the influencing factors on globalecosystem carbon balance and the sustainability of soil utilization. Took the basic problems of farmland soilorganic carbon pool as the study object, the authors summarized the composition and classification of farmlandsoil organic carbon pool, the carbon sequestration potential and the influencing factors. The future directions inthis research field mainly focused on the sequestration and turnover mechanism of soil organic carbon indifferent regions, carbon sequestration potential, the influencing degree of different factors, farmland soilcarbon cycle process and earth surface process and how to design a reasonable effective farmland managementmeasures in order to achieve the largest carbon sequestration potential.
出处
《中国农学通报》
2017年第33期107-114,共8页
Chinese Agricultural Science Bulletin
基金
中国科学院内陆河流域生态水文重点实验室开放基金"河西走廊人工梭梭天然更新对降水的响应机制"(KLEIRB-ZS-16-05)
中国科学院沙漠与沙漠化重点实验室开放基金"极端干旱荒漠区湿地退化过程中土壤有机碳动态变化及其驱动机制"(KLDD-2017-008)
国家科技支撑计划课题"敦煌文化遗产与自然遗迹保护关键技术集成试验示范研究"(2013BAC07B02)
关键词
农田
土壤有机碳库
固碳潜力
影响因素
farmland
soil organic carbon pool
carbon sequestration potential
influencing factors
