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地球科学进展
环境地球化学     
成都经济区不同地貌景观区土壤有机碳分布特征及储量估算
阚泽忠1,金立新1,李忠惠1,杨振鸿2,张 华1,包雨函1
1.四川省地质调查院,四川 成都 610081;2.重庆市地勘局川东南地质大队,重庆 400038
Distribution Characteristics and Reserves Estimation of Soil Organic Carbon of Different Physiognomy in Chengdu Economic Zone
Kan Zezhong1,Jin Lixin1,Li Zhonghui1,Yang Zhenhong2,Zhang Hua1 ,Bao Yuhan1
1. Sichuan Province Geological Survey Institute, Chengdu 610081, China; 2. Southeast Sichuan Geological Team of Chongqing Bureau of Geology and Minerals Exploration,Chongqing 400038, China
 全文: PDF(1956 KB)  
摘要:

利用四川省成都经济区多目标区域地球化学调查获得的土壤有机碳含量数据,探讨了成都经济区不同地貌景观区土壤有机碳的分布特征。山区表层土壤有机碳含量(SOC)最高(22 g/kg左右),较平原区、丘陵区高一倍以上,丘陵区最低(9.49 g/kg)。成都平原区和东部丘陵区深层土壤碳含量相差不大,且均低于研究区深层土壤碳含量均值(6.99 g/kg)。利用指数模型对单位土壤平均碳量(USCATOC)、有机碳储量(USCATOC,h)、有机碳丰度指数(R)进行了估算。结果表明:各地貌单元土壤碳含量、单位土壤平均碳量、有机碳储量、有机碳丰度指数(R)分布具有山区高于平原区、丘陵区最低的一致性特征。龙门山区、西南山区面积约占全区的42%,土壤有机碳储量约占全区的59%;成都平原区、丘陵区面积占58%,土壤有机碳储量约占全区的41%。单位土壤平均碳量、有机碳储量在不同地貌单元中分布的差异主要与不同地貌单元的土壤有机碳含量有关,此外还可能与成土母质、植被发育情况、土地利用方式有关。

关键词: 地貌景观区土壤有机碳含量单位土壤平均碳量有机碳储量有机碳丰度指数    
Abstract:

In this paper, we investigate the distribution characteristics of soil organic carbon between different landscape areas in Chengdu Economic Zone with soil organic carbon (SOC) data from multitarget regional geochemical survey. The SOC contents of surface soil in mountain area is the highest, nearly 22g/kg, twice more than the plain area or hilly area which contribute the lowest carbon contents (about 9.49g/kg). There are the similar carbon contents in deep soil between Chengdu plain area and Eastern hilly area, which were lower than the average value (6.99g/kg) of SOC in deep soil of the study area. The unit soil carbon average storage (USCATOC), Organic carbon storage(USCATOC.h) and the abundance index of soil organic carbon (R) with the index model are estimated. The results show that the SOC, USCATOC, USCATOC.h and R in different geomorphic unit have the same features, i.e. the dates in mountain area are high than those in Chengdu plain area, and the hilly area is the lowest. The region of Longmenshan area and southwestern mountainous area which occupy 42% of the measured area contributed to 59% of USCATOC.h and the region of the plain area and the hilly area which occupy 58% of the measured area contributed to 41% of USCATOC.h. The reason resulting to the distribution content differences of USCATOC and USCATOC,h in the different landscape units is mainly because that the various soil organic carbon contents in different landscape units. In addition, it is related to the differences of the parent material, the vegetation development situation, and the land use types.

Key words: Landscape area    Soil organic carbon content    Unit soil carbon average storage    Organic carbon storage    Abundance index of soil organic carbon
收稿日期: 2012-07-24 出版日期: 2012-10-10
:  S153.6+2  
作者简介: 阚泽忠(1963-),男,四川眉山人,教授级高级工程师,长期从事区域地质矿产及地球化学勘查工作.E-mail:scddyjcb@vip.sina.com
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引用本文:

阚泽忠,金立新,李忠惠,杨振鸿,张 华,包雨函. 成都经济区不同地貌景观区土壤有机碳分布特征及储量估算[J]. 地球科学进展, 10.11867/j.issn.1001-8166.2012.10.1126.

Kan Zezhong,Jin Lixin,Li Zhonghui,Yang Zhenhong,Zhang Hua,Bao Yuhan. Distribution Characteristics and Reserves Estimation of Soil Organic Carbon of Different Physiognomy in Chengdu Economic Zone. Advances in Earth Science, 10.11867/j.issn.1001-8166.2012.10.1126.

链接本文:

http://www.adearth.ac.cn/CN/10.11867/j.issn.1001-8166.2012.10.1126        http://www.adearth.ac.cn/CN/Y2012/V27/I10/1126

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