| 土壤有机碳对土地利用方式变化的响应 |
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| 引用本文： | 耿彩英,高明,陈晨. 土壤有机碳对土地利用方式变化的响应[J]. 西南大学学报(自然科学版), 2011, 33(11) |
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| 作者姓名： | 耿彩英 高明 陈晨 |
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| 作者单位： | 西南大学资源环境学院;辽宁省发展和改革委员会农业资源区划研究所; |
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| 基金项目： | 国家科技支撑计划“沿三峡水库(重大工程区)农业面源污染防控与综合治理技术研究”(2007BAD87B10,2008BABA7B09); 西南大学生态学重点学科“211工程”建设项目 |
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| 摘 要： | 以重庆市北碚区5种土地利用方式为研究对象,研究了土壤剖面有机碳和有机碳密度对土地利用方式变化的响应.结果表明:(1)土壤有机碳平均含量的多少顺序表现为水田变菜地,旱地变菜地,水田变果园,水田变旱地,旱地变果园;(2)水田变旱地、旱地变为果园后有机碳含量呈降低趋势,而旱地变为菜地后有机碳含量呈增加的趋势;(3)表层(020cm)土壤有机碳密度大小顺序表现为旱地变菜地,水田变菜地,水田变果园,旱地变果园,水田变旱地;而2060cm厚度土壤有机碳密度表现为变化前为水田的土壤有机碳密度大于变化前为旱地的土壤有机碳密度.
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| 关 键 词： | 土地利用方式变化 有机碳 有机碳密度 |
Responses of Soil Organic Carbon to Land Use Change |
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| GENG Cai-ying,GAO Ming,CHEN Chen .School of Resources , Environment,Southwest University,Chongqing ,China. Responses of Soil Organic Carbon to Land Use Change[J]. Journal of southwest university (Natural science edition), 2011, 33(11) |
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| Authors: | GENG Cai-ying GAO Ming CHEN Chen .School of Resources Environment Southwest University Chongqing China |
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| Affiliation: | GENG Cai-ying1,GAO Ming1,CHEN Chen2 1.School of Resources and Environment,Southwest University,Chongqing 400715,China,2.Institute of Agricultural Resources and Regional Planning,Liaoning Provincial Development and Reform Commission,Shenyang Liaoning 110034 |
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| Abstract: | Five land use patterns in Beibei District of Chongqing City,i.e.paddy field changing into vegetable plot(P-V),dryland changing into vegetable plot(D-V),paddy field changing into orchard(P-O),paddy field changing into dayland(P-D) and dryland changing into orchard(D-O) are taken as the research object to study the responses of organic carbon and organic carbon density of the soil profile to the changes in land use patterns.The average content of soil organic carbon appears in the order of P-V > D-V > P-O > P... |
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| Keywords: | changes of land use patterns organic carbon organic carbon density |
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