| 松嫩平原耕层土壤固碳潜力估算 |
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| 引用本文： | 刘国栋,李瑛,张立,崔玉军,杨柯,刘应汉.松嫩平原耕层土壤固碳潜力估算[J].中国地质,2014,41(2):658-664. |
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| 作者姓名： | 刘国栋 李瑛 张立 崔玉军 杨柯 刘应汉 |
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| 作者单位： | 黑龙江省地质调查研究总院;中国地质科学院地球物理地球化学勘查研究所; |
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| 基金项目： | 中国地质调查局地质调查工作项目(1212010511217、1212011087124、1212011087123);国土资源部公益性行业专项(200911020)联合资助 |
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| 摘 要： | 提高土壤碳收集能力对减缓全球温室效应具有重要意义。利用松嫩平原南部第二次土壤普查及多目标区域地球化学调查获取的两期表层土壤有机碳数据,根据近20年来各土壤类型不同土地利用方式土壤有机碳量变化趋势,估算了松嫩平原南部各土壤类型、各用地方式下土壤碳源、汇潜力。由估算得出,如果目前的土地利用方式、气候条件、耕作方式、种植技术不变,松嫩平原耕地土壤0~20 cm土层的固碳潜力为-1.229Tg碳,各土壤类型的林地土壤固碳潜力绝大多数为正值,说明林业用地为碳汇区,固碳潜力合计为3.169Tg碳,而天然牧草地绝大多数的固碳潜力为负值,固碳潜力合计为-2.235Tg碳,为碳源区,本次研究估算得出,松嫩平原总体的固碳潜力为-0.917Tg碳。
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| 关 键 词： | 土壤碳库 松嫩平原 碳源 碳汇 有机碳 |
The estimation of soil carbon sequestration potential in southern Songnen plain |
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| Liu Guodong,Li Ying,Zhang Li,Cui Yujun,Yang Ke,Liu Yinghan.The estimation of soil carbon sequestration potential in southern Songnen plain[J].Chinese Geology,2014,41(2):658-664. |
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| Authors: | Liu Guodong Li Ying Zhang Li Cui Yujun Yang Ke Liu Yinghan |
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| Institution: | 1. Heilongjiang Academy of Geological Survey, Harbin 150036, Heilongjiang, China;2. Institute of Geophysical and Geochemical Exploration, Chinese Academy of Geological Sciences, Langfang 065000, Hebei, China |
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| Abstract: | The improvement of soil capacity of carbon sequestration has great significance for reducing global greenhouse effect. Using two phases'' data of organic carbon in surface soil in second soil survey and multi-purpose regional geochemical survey in south Songnen plain and employing variation tendency of organic carbon content in soil in different soil types and land uses in the past 20 years, the authors estimated soil carbon sourcing and gathering potential in different soil types and different land uses in south Songnen plain. The results show that, if the current land use, climate conditions, tillage, and planting technique are fixed, the carbon sequestration potential of soil in the depth of 0-20 cm of cultivated land in Songnen plain is -1.229 Tg C, and the carbon sequestration potential of soil in forestry land is positive in Songnen plain. The data obtained show that the forestry land is a carbon storage area, whose total carbon sequestration potential is 3.169 Tg C, whereas in natural pasture, the data of carbon sequestration potential adds up to - 2.235 Tg C, and the values are mostly negative, indicating a carbon resource area. It is estimated that the carbon sequestration potential of Songnen plain is totally -0.917 Tg C. |
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| Keywords: | soil carbon pool Songnen plain carbon source carbon gathering organic carbon |
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