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中国沙漠 ›› 2014, Vol. 34 ›› Issue (6): 1558-1561.DOI: 10.7522/j.issn.1000-694X.2013.00311

• 生物与土壤 • 上一篇    下一篇

干旱区土壤有机碳含量与土壤理化性质相关分析

徐薇薇1,2, 乔木1   

  1. 1. 中国科学院新疆生态与地理研究所, 新疆 乌鲁木齐 830011;
    2. 中国科学院大学, 北京 100049
  • 收稿日期:2013-08-20 修回日期:2013-09-29 出版日期:2014-11-20 发布日期:2014-11-20
  • 作者简介:徐薇薇(1987- ),女,山东青岛人,硕士研究生,研究方向为干旱区、半干旱区环境遥感和生态恢复.Email:vivixu123@163.com
  • 基金资助:
    国家科技支撑计划项目(2009BAC54B02)资助

Soil Carbon Contents in Relation to Soil Physicochemical Properties in Arid Regions of China

Xu Weiwei1,2, Qiao Mu1   

  1. 1. Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi, Xinjiang 830011, China;
    2. University of Chinese Academy of Sciences, Beijing 100049, China
  • Received:2013-08-20 Revised:2013-09-29 Online:2014-11-20 Published:2014-11-20
  • Contact: 乔木(Email:qiaomu@ms.xjb.ac.cn)

摘要: 干旱区土壤碳库是全球碳库的重要组成部分,在全球碳循环中起着重要作用.本文根据干旱区土壤相关数据资料,分析土壤有机碳与土壤理化性质相关性,为干旱区碳循环提供理论依据.结果表明:土壤有机碳含量与土壤营养成分和交换性阳离子含量呈显著正相关,与土壤pH值和容重呈显著负相关.此外,干旱区土壤也存在相当比例的无机碳,土壤有机碳和无机碳含量呈显著负相关,二者间关系还需要结合母质、生物气候条件、人类活动影响进行进一步说明.

关键词: 土壤理化性质, 有机碳, 干旱区

Abstract: The organic carbon (SOC) and inorganic carbon (SIC) compose of soil carbon in terrestrial ecosystems, the amount of SIC in the earth surface is about half of the SOC amount (1 500 Pg), showing that its played important role in global carbon balance, but at present more studies were on the SOC compared to SIC. The determination of the relation in SOC and soil physical-chemical is meaningful and necessary for assessing carbon sequestration. In order to analyses the relationship among soil physical-chemical properties and SOC content, the data from Xinjiang Autonomous Region in northwestern China was collected, and analyzed using correlation and regression method. The finding is that, the SOC has significantly positive correlations with soil nutrients, cation exchange capacity, while soil pH and bulk density has significantly negative correlation with SOC. In addition, SOC and SIC was inversely related. These findings suggest that the processes governing the dynamics of SOC is complex. The differ among eco-regions and strongly interact in land use, farming systems and farming management practices. There are few reliable estimates of the SOC content and SIC content in the soils. Therefore, in the future, we should pay more attention to the relation between SOC and SIC.

Key words: soil physical-chemical properties, SOC, arid region of northwest China

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