中国典型地区土壤碳储量研究  

SOIL ORGANIC CARBON STORAGE IN TYPICAL REGIONS OF CHINA

作　　者：奚小环[1] 杨忠芳[2] 廖启林[3] 张建新 白荣杰[5] 张秀芝 金立新[7] 王会峰 李敏[1] 夏学齐[2] 

机构地区：[1]中国地质调查局,北京100037 [2]中国地质大学(北京)地球科学与资源学院,北京100083 [3]江苏省地质调查院,南京210018 [4]湖南省地质研究所,长沙410007 [5]吉林省地质调查院,长春130061 [6]河北省地质调查院,石家庄050081 [7]四川省地质调查院,成都610081 [8]陕西省地质调查院,西安710065

出　　处：《第四纪研究》2010年第3期573-583,共11页Quaternary Sciences

基　　金：多目标生态农业地球化学调查项目(批准号:基[2004]012);湖南省洞庭湖区1:25万多目标区域地球化学调查项目(批准号:基[2003]014-01);江苏省国土生态地球化学调查项目(批准号:水[2003]019-01);四川省成都经济区1:25万多目标区域地球化学调查项目(批准号:基[2003]012-01);吉林省1:25万多目标区域地球化学调查项目(批准号:基[2004]012-08);河北省农业地质调查项目(基[2004]012-12);陕西省多目标区域地球化学调查项目(批准号:基[2005]GZTR001-02;基[2007]GZTR01-13和基[2008]GZTR01-15)资助

摘　　要：利用多目标区域地球化学调查高精度和高密度上壤碳分布数据,建立"单位土壤碳量",采用指数模型计算方法,取得各地区土壤碳储量数据。按照土壤类型、上地利用分类、生态系统及自然景观等划分方式,按照0～0.2m,0～1.0m和0～1.8m不同土壤深度,分析了四川、湖南、吉林、江苏、河北、陕西等代表性地区有机碳储量空间分布特征,进行中国土壤碳储量研究。计算结果表明,全国土壤碳储量分布不均匀。按照0～1.8m深度比较,成都平原土壤碳储量为1462.9Mt,碳密度为24813t/km^2;吉林平原区碳储量1381.96Mt,碳密度14473t/km^2;湖南洞庭湖区碳储量757.65Mt,碳密度18171t/km^2;江苏省碳储量1468.87Mt,碳密度13802t/km^2;陕西渭河平原碳储量165.47Mt,碳密度12124t/km^2;河北平原区碳储量844.84Mt,碳密度10525t/km^2。按照面积加权平均计算,推算出全国多目标区域地球化学调查地区平均碳密度,0～0.2m为3186t/km^2,0～1.0m为11646t/km^2,0～1.8m为15339t/km^2。In this paper,the concept of USCA（ Unit Soil Carbon Amount）was established on the basis of soil carbon data with high accuracy and density provided by the multi-purpose geochemical survey, the soil organic carbon storage was calculated by an exponential model, and spatial distribution characteristics of organic carbon storage at depth intervals 0- 0.2m,0- 1.0m and 0- 1.8m in typical regions of Sichuan, Hunan, Jilin, Jiangsu, Hebei, Shaanxi provinces were analyzed in terms of soil type,land use,ecosystem and landform type. In depth interval 0 -1.8m, for example,the organic carbon storage and the highest organic carbon density are of 1462.9Mt and 24813t/km^2, respectively, for Chengdu Plain, Sichuan Province; 1381.96Mt and 14473 t/km^2 , respectively, for Songliao Plain, Jilin Province ; 757.65Mt and 18171t/km^2, respectively, for the Dongting Lake area, Hunan Province ; 1468.87Mt and 13802 t/km^2, respectively, for Jiangsu Province ; 165.47Mt and 12124 t/km^2 , respectively, for Weihe Plain, Shaanxi Province; and 844.84Mt and 10525 t/km^2, respectively, for North China Plain, Hebei Province. The average organic carbon density of all investigated areas is 3186t/km^2 in depth interval 0 -0.2m, 11646t/km^2 in depth interval 0 - 1.0m,and 15339t/km^2 in depth interval 0 - 1.8m.

关 键 词：多目标区域地球化学调查 指数模型法 单位土壤碳量 土壤碳储量 土壤平均碳密度 

分 类 号：S153.6[农业科学—土壤学]