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中国土壤有机碳密度和储量的估算与空间分布分析
引用本文:解宪丽,孙波,周慧珍,李忠佩,李安波.中国土壤有机碳密度和储量的估算与空间分布分析[J].土壤学报,2004,41(1):35-43.
作者姓名:解宪丽  孙波  周慧珍  李忠佩  李安波
作者单位:1. 南京师范大学地理科学学院,南京,210097;中国科学院南京土壤研究所,南京,210008
2. 中国科学院南京土壤研究所,南京,210008
3. 南京师范大学地理科学学院,南京,210097
基金项目:中国准备初始国家信息通报的能力建设项目 (CPR/0 0 /G31 /A/1G/99)资助
摘    要:基于 1∶40 0万的《中华人民共和国土壤图》和第二次土壤普查数据 ,运用地理信息系统技术 ,对中国土壤有机碳密度及储量做出估算 ,并且分析了土壤有机碳密度的空间分布差异。结果表明 :10 0cm深度的土壤有机碳密度介于 1 19kgm- 2 到 176 46kgm- 2 之间 ,2 0cm深度的土壤有机碳密度介于 0 2 7kgm- 2 到53 46kgm- 2 之间 ;10 0cm和 2 0cm深度的土壤有机碳储量分别为 84 4Pg (1Pg =10 15 g)和 2 7 4Pg ;土壤有机碳密度具有高度的空间变异性 ,东北地区、青藏高原的东南部、云贵高原等森林、草甸分布的地区有机碳密度最高 ,准噶尔盆地、塔里木盆地、阿拉善高原与河西走廊、柴达木盆地等沙漠化地区的土壤有机碳密度最低 ;土壤有机碳密度的空间分布主要受气候、植被以及人类活动的影响

关 键 词:土壤有机碳密度  有机碳储量  碳密度分布图  中国
收稿时间:2003/1/14 0:00:00
修稿时间:6/4/2003 12:00:00 AM

ORGANIC CARBON DENSITY AND STORAGE IN SOILS OF CHINA AND SPATIAL ANALYSIS
Xie Xianli,Sun Bo,Zhou Huizhen,Li Zhongpei and Li Anbo.ORGANIC CARBON DENSITY AND STORAGE IN SOILS OF CHINA AND SPATIAL ANALYSIS[J].Acta Pedologica Sinica,2004,41(1):35-43.
Authors:Xie Xianli  Sun Bo  Zhou Huizhen  Li Zhongpei and Li Anbo
Affiliation:Geography College, Nanjing Normal University, Nanjing 210097, China;Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, China;Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, China;Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, China;Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, China;Geography College, Nanjing Normal University, Nanjing 210097, China
Abstract:Soil organic C plays an essential role in carbon cycle and carbon storage in a native ecosystem reflects that ecosystem.s capacity to sequester carbon.Based on soil map of China(1:4 000 000)combined with a soil database from the second soil survey of China,soil organic carbon storage to the depths of 100 cm and 20 cm were estimated for China using geographical information system.Carbon density of different soil types ranged from 1.19 kg m-2 to 176.46 kg m-2 at depth of 100 cm,and from 0.27 kg m-2 to 53.46 kg m-2 at depth of 20 cm.In total,about 84.4 Pg was stored in 0~100 cm,and 27.4 Pg in the 0~20 cm soil layer.The amount of carbon varied significantly at different districts in China.Northeast China, the south and east of Qinghai-Tibet Plateau and southwest China had high carbon density.Tarim Basin,Caidam Basin,Junggar Basin and other desert ification districts had low carbon density.This distribution showed an important climatic influence.Soil organic carbon would diminish with decreasing precipitation and increasing temperature.On the other hand,the activities of human beings may affect the range of soil carbon.
Keywords:Soil organic carbon density  Carbon storage  Map of carbon density  China
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