土地覆被,土壤有机碳,垂直分布,天山北麓," /> 土地覆被,土壤有机碳,垂直分布,天山北麓,"/> land cover,soil organic carbon,vertical distribution,northern piedmont of the Tianshan Mountains,"/> 天山北麓不同土地覆被下土壤有机碳垂直分布特征

干旱区研究 ›› 2013, Vol. 30 ›› Issue (5): 913-918.

• 生态与环境 • 上一篇    下一篇

天山北麓不同土地覆被下土壤有机碳垂直分布特征

王渊刚1,2, 罗格平1, 冯异星1,2, 李超凡1,2, 韩其飞1,2, 范彬彬1,2   

  1. 1. 中国科学院新疆生态与地理研究所,荒漠与绿洲生态国家重点实验室,新疆 乌鲁木齐 830011; 2. 中国科学院大学,北京 100049
  • 收稿日期:2012-10-15 修回日期:2013-04-10 出版日期:2013-09-15 发布日期:2013-09-22
  • 通讯作者: 罗格平.E-mail: luogp@ms.xjb.ac.cn
  • 作者简介:王渊刚 (1986- ),男,硕士研究生,主要从事土地利用变化、遥感与地理信息系统应用研究.E-mail: wyg04@sina.com
  • 基金资助:

    国家重点基础研究发展计划资助项目(2009CB825105);国家自然科学基金项目(41101179)

Vertical Distribution of Soil Organic Carbon in Different Land  Cover Types in Northern Piedmont of the Tianshan Mountains

 WANG  Yuan-Gang1,2, LUO  Ge-Ping1, FENG  Yi-Xing1,2,LI  Chao-Fan1,2, HAN  Qi-Fei1,2, FAN  Bin-Bin1,2   

  1. 1. State Key Laboratory of Desert and Oasis Ecology, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, 
    Urumqi 830011, China; 2.   University of Chinese Academy of Sciences, Beijing 100049, China
  • Received:2012-10-15 Revised:2013-04-10 Online:2013-09-15 Published:2013-09-22

摘要: 利用全国第二次土壤普查数据,对天山北麓不同土地覆被类型下的土壤有机碳分布特征开展研究。结果表明:在0~100 cm土层天山北麓不同土地覆被类型的土壤碳密度差异显著,其均值处于3.65~35.73 kg·m-2。不同土地覆被类型的土壤碳密度垂直分布差异明显,其中耕地表层(0~20 cm)土壤碳密度占其总量的32.2%,其相邻土层的土壤碳密度占其总量比例的差值较小,最大差值仅为8.1%;高山亚高山草甸、森林和隐域植被表层(0~20 cm)土壤碳密度占其总量的40%以上;荒漠植被、裸地和稀疏植被表层(0~20 cm)土壤碳密度占其总量的比例低于37%,其中裸地与稀疏植被最低,仅为25.4%,其相邻土层土壤碳密度占其总量比例的最大差值低于4.0%。

关键词: font-family: 宋体, mso-bidi-font-family: 宋体, mso-font-kerning: 1.0pt, mso-ansi-language: EN-US, mso-fareast-language: ZH-CN, 土地覆被')">mso-bidi-language: AR-SA">土地覆被, 土壤有机碳, 垂直分布, 天山北麓

Abstract: Soil carbon cycle is the focus and hotspot of the studies on global environment change. Relationship between the vertical distribution of soil organic carbon and its affecting factors was explored, especially in arid zone. In this study, the vertical distribution of soil organic carbon under different land cover types in northern piedmont of the Tianshan Mountains was studied based on the data of second national soil survey. The results showed that the mean soil organic carbon density in soil layer of 0-100 cm in depth varied from 3.65 kg·m-2in land with sparse vegetation to 35.73 kg·m-2in alpine and subalpine meadow. The vertical distribution of soil organic carbon density was quite different from different land cover types: the proportion of soil carbon density in soil layer of 0-20 cm in arable land accounted for 32.2% of the total soil carbon density in topsoil layer of 1 m in thickness, it was higher than 40% in alpine and subalpine meadow, forest and intrazonal vegetation surface, and lower than 37% in desert vegetation and bare land and land with sparse vegetation, in which it was 25.4% only in bare land and land with sparse vegetation. The average difference of soil carbon density between adjacent soil layers was lower than 8.1% in arable land and lower than 4.0% in bare land and land with sparse vegetation.

Key words: font-family: 宋体, mso-bidi-font-family: 宋体, mso-font-kerning: 1.0pt, mso-ansi-language: EN-US, mso-fareast-language: ZH-CN, land cover')">mso-bidi-language: AR-SA">land cover, soil organic carbon, vertical distribution, northern piedmont of the Tianshan Mountains