收藏 ｜ 设为首页 广告服务 ｜ 联系我们 ｜ 在线留言
高级检索

干旱区地理 ›› 2014, Vol. 37 ›› Issue (2): 239-249.

• 地表过程研究 • 上一篇    下一篇

亚洲中部干旱区植被与土壤碳密度分析

王渊刚1，2，罗格平1，王玉辉1，2，韩其飞1，2，范彬彬1，2，陈耀亮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:2013-10-21 修回日期:2013-12-28 出版日期:2014-03-25
  • 通讯作者: 罗格平（1968-），男，博士，研究员. Email：luogp@ms.xjb.ac.cn
  • 作者简介:王渊刚（1986-），男，新疆奇台人，硕士生，主要从事土地利用变化、遥感与地理信息系统应用研究. Email：wyg04@sina.com
  • 基金资助:

    国家国际科技合作项目(批准号2010DFA92720-09)

Vegetation and soil carbon density in arid region of Central Asia

WANG  Yuan-gang1，2，LUO  Ge-ping1，WANG  Yu-hui1，2，HAN  Qi-fei1，2，FAN  Bin-bin1，2，CHEN  Yao-liang1，2   

  1. （1   State Key Laboratory of Desert and Oasis Ecology, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi  830011, Xinjiang, China;   2   University of Chinese Academy of Sciences, Beijing  100049, China）
  • Received:2013-10-21 Revised:2013-12-28 Online:2014-03-25

PDF (PC)

611

赞

摘要： 碳密度作为估算陆地生态系统吸收和排放含碳气体数量的关键要素—碳存储能力的重要指标之一，对判定碳源汇、制定缓解全球变化的合理政策措施具有重要意义。干旱半干旱区相关研究的薄弱性与其广大的陆地面积极不相称。通过搜集与中亚五国和新疆生物量或植被碳密度资料有关的文献，整理中亚五国和新疆的土壤剖面数据，对亚洲中部干旱区植被和土壤碳密度开展研究。结果表明：亚洲中部干旱区植被和土壤碳密度因区域和植被类型的不同而呈现一定差异。总体而言，林地的植被与土壤的碳密度最高；草地土壤碳密度高于耕地土壤碳密度，中亚五国草地植被碳密度高于该区农田植被碳密度，而低于新疆农田植被碳密度；裸地作为植被覆盖度最低的类型，植被与土壤的碳密度最低。

关键词: 植被, 土壤, 碳密度, 干旱区, 中亚

Abstract: Carbon storage capacity is the key factor to estimate the quantity of carbon emissions and sequestrations by terrestrial ecosystem. As one of the important indicators，carbon density has vital significance in determining carbon sinks and developing reasonable policies for global change mitigation.  Arid and semiarid area is widely distributed in Central Asia，however，research on carbon storage in this region is comparably scarce. This paper investigates vegetation and soil carbon density in arid region of Central Asia，based on published literatures associated to biomass or vegetation carbon density and soil profile data of the five countries in Central Asia and Xinjiang，China. The results shows that vegetation and soil carbon density present certain differences with different regions and vegetation types in the arid region of Central Asia. In the arid region of Central Asia，the woodland has the highest vegetation carbon density and soil organic carbon density because of the best hydrothermal conditions. The vegetation and soil carbon density of woodland in Xinjiang are 7 728.1 g C/m2 and 25.4 kg C/m2 respectively，which are higher than that in other five countries of Central Asia （6 236.0 g C/m2 and 21.6 kg C/m2 respectively）. The soil carbon density of grassland is higher than the farmland’s in arid region of Central Asia. Among them，the soil carbon density of grassland in Xinjiang and five countries of Central Asia are 15.4 kg C/m2 and 10.9 kg C/m2，and the soil carbon density of farmland are 9.5 kg C/m2 and 7.1 kg C/m2 respectively，because of anthropology disturbance. The vegetation carbon density of grassland in Xinjiang and five countries of Central Asia are 585.5 g C/m2 and 645.9 g C/m2，which is lower than the vegetation carbon density of farmland in Xinjiang（806.0 g C/m2），but higher than the vegetation carbon density of farmland in five countries of Central Asia（384.7 g C/m2），which is dominated by dry farmland with outdated farming system. Bare land has the lowest vegetation and soil carbon density in the whole study area due to the lowest vegetation coverage. The vegetation carbon density of bare land in Xinjiang and five countries in Central Asia are 54.6 g C/m2 and 86.3 g C/m2，and the soil carbon density of bare land are 2.80 kg C/m2 and 2.6 kg C/m2. In addition，in the arid region of Central Asia，vegetation and soil carbon density display certain vertical variation characteristics because of the precipitation and temperature are affect by the elevation. Overall，terrestrial ecosystem carbon storage capacity is higher in Xinjiang than in the five countries of Central Asia.

Key words: vegetation, soil, carbon density, arid region, Central Asia

中图分类号: 

  • S714