...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Environmental Science & Technology >Mineral Availability as a Key Regulator of Soil Carbon Storage
【24h】

Mineral Availability as a Key Regulator of Soil Carbon Storage

机译：矿物质可利用性是土壤碳储量的关键调节剂

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Mineral binding is a major mechanism for soil carbon (C) stabilization, and mineral availability for C binding critically affects C storage. Yet, the mechanisms regulating mineral availability are poorly understood. Here, we showed that organic amendments in three long-term (23, 154, and 170 yrs, respectively) field experiments significantly increased mineral availability, particularly of short-range-ordered (SRO) phases. Two microcosm studies demonstrated that the presence of roots significantly increased mineral availability and promoted the formation of SRO phases. Mineral transformation experiments and isotopie labeling experiments provided direct evidence that citric acid, a major component of root exudates, promoted the formation of SRO minerals, and that SRO minerals acted as “nuclei” for C retention. Together, these findings indicate that soil organic amendments initialize a positive feedback loop by increasing mineral availability and promoting the formation of SRO minerals for further C binding, thereby possibly serving as a management tool for enhancing carbon storage in soils.
机译：矿物结合是土壤碳（C）稳定的主要机制，而矿物对C的可利用性则严重影响C的储存。然而，人们对调节矿产供应的机制了解甚少。在这里，我们表明，在三个长期（分别为23、154和170年）的有机实验中，有机物的改良显着提高了矿物的利用率，尤其是短程有序（SRO）相。两项微观研究表明，根的存在显着增加了矿物质的利用率并促进了SRO相的形成。矿物转化实验和同位素标记实验提供了直接证据，证明柠檬酸是根系分泌物的主要成分，促进了SRO矿物的形成，并且SRO矿物充当了C保留的“核”。总之，这些发现表明，土壤有机改良剂通过增加矿物质的利用并促进SRO矿物质的形成来促进碳的进一步结合，从而启动了一个正反馈回路，从而有可能作为增强土壤碳存储的一种管理工具。

著录项

  • 来源
    《Environmental Science & Technology》 |2017年第9期|4960-4969|共10页
  • 作者

    Guanghui Yu; Jian Xiao; Shuijin Hu; Matthew L. Polizzotto; Fangjie Zhao; Steve P. McGrath; Huan Li; Wei Ran; Qirong Shen;

  • 作者单位

    Jiangsu Provincial Key Lab for Organic Solid Waste Utilization, Jiangsu Collaborative Innovation Center for Solid Organic Waste Resource Utilization, Nanjing Agricultural University, Nanjing 210095, PR China ,Department of Crop and Soil Science, Oregon State University, ALS Building 3017, Corvallis, Oregon 97331, United States;

    Jiangsu Provincial Key Lab for Organic Solid Waste Utilization, Jiangsu Collaborative Innovation Center for Solid Organic Waste Resource Utilization, Nanjing Agricultural University, Nanjing 210095, PR China;

    Jiangsu Provincial Key Lab for Organic Solid Waste Utilization, Jiangsu Collaborative Innovation Center for Solid Organic Waste Resource Utilization, Nanjing Agricultural University, Nanjing 210095, PR China ,Department of Plant Pathology, North Carolina State University, Raleigh, North Carolina 27695, United States;

    Department of Crop and Soil Sciences, North Carolina State University, Raleigh, North Carolina 27695, United States;

    Jiangsu Provincial Key Lab for Organic Solid Waste Utilization, Jiangsu Collaborative Innovation Center for Solid Organic Waste Resource Utilization, Nanjing Agricultural University, Nanjing 210095, PR China ,Sustainable Soils and Grassland Systems, Rothamsted Research, Harpenden, Hertfordshire AL5 2JQ, U.K.;

    Sustainable Soils and Grassland Systems, Rothamsted Research, Harpenden, Hertfordshire AL5 2JQ, U.K.;

    Jiangsu Provincial Key Lab for Organic Solid Waste Utilization, Jiangsu Collaborative Innovation Center for Solid Organic Waste Resource Utilization, Nanjing Agricultural University, Nanjing 210095, PR China ,Department of Plant Pathology, North Carolina State University, Raleigh, North Carolina 27695, United States;

    Jiangsu Provincial Key Lab for Organic Solid Waste Utilization, Jiangsu Collaborative Innovation Center for Solid Organic Waste Resource Utilization, Nanjing Agricultural University, Nanjing 210095, PR China;

    Jiangsu Provincial Key Lab for Organic Solid Waste Utilization, Jiangsu Collaborative Innovation Center for Solid Organic Waste Resource Utilization, Nanjing Agricultural University, Nanjing 210095, PR China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号