| 开垦对黑土有机碳在有机无机复合体分配的影响 |
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| 引用本文： | 于君宝,刘淑霞,刘景双,王金达,齐小宁,王洋.开垦对黑土有机碳在有机无机复合体分配的影响[J].土壤通报,2004,35(6):695-700. |
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| 作者姓名： | 于君宝 刘淑霞 刘景双 王金达 齐小宁 王洋 |
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| 作者单位： | 中国科学院东北地理与农业生态研究所,吉林,长春,130012 |
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| 基金项目： | 国家重点基础发展规划项目(G1999011804-05)，中国科学院知识创新工程重大项目(KZCX1-SW-19)资助 |
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| 摘 要： | 本文研究了不同开垦年限黑土粘粒、粉砂和细砂级复合体中有机碳的分布特征及其变化规律,结果表明,黑土有机无机复合体组成以细砂级复合体为主,粘粒及粉砂级复合体次之。随着开垦年限的延长,黑土耕层和犁底层土壤粒粘级复合体的含量均有不同程度的增加,而粉粒及细砂级复合体的含量相应减少;黑土耕层各复合体中有机碳含量均明显减少,犁底层亦表现出降低的趋势。犁底层各复合体中有机碳含量占土壤有机碳含量的百分数表现各异,在粘粒级复合体中随着开垦年限延长趋于增加,而在粉粒和细砂级复合体中趋于减少。黑土耕层土壤粘粒级复合体中有机碳含量与粘粒级复合体含量呈明显的负相关,粉砂和细砂级复合体中有机碳含量与粉砂和细砂级复合体含量则呈明显的正相关。
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| 关 键 词： | 黑土 有机碳 开垦 有机无机复合体 |
| 文章编号： | 0564-3945(2004)06-0695-06 |
| 修稿时间： | 2003年9月16日 |
Effect of Tillage on the Distribution of Black Soil Organic Carbon in Organic- mineral Complex |
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| YU Jun-bao,LIU Shu-xia,LIU Jing-shuang,WANG Jin-da,QI Xiao-ning,WANG Yang.Effect of Tillage on the Distribution of Black Soil Organic Carbon in Organic- mineral Complex[J].Chinese Journal of Soil Science,2004,35(6):695-700. |
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| Authors: | YU Jun-bao LIU Shu-xia LIU Jing-shuang WANG Jin-da QI Xiao-ning WANG Yang |
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| Abstract: | The distribution characteristics and variation regulations of organic carbon in clay organic-mineral complex, silt organic-mineral complex and fine sand organic-mineral complex in black soil of different tillage period were studied. The results show that the fine sand organic-mineral complex content is the most in organic-mineral complex components of black soil, and the content of silt organic-mineral complex and clay organic-mineral complex are appreciably less than that of fine sand organic-mineral complex. Following the increment of tillage period, the contents of clay organic-mineral complex in tillage layer and below plough layer are increased in different degree, while the contents of silt organic-mineral complex and fine sand organic-mineral complex are decreased. The organic carbon content in each organic-mineral complex of tillage layer is decreasing obviously with tillage period increasing, and that also has a decreasing trend in below plough layer. The variation of percentage of organic carbon content in each organic-mineral complex to that in soil is different. It is increasing in clay organic-mineral complex with tillage period extent, while it is decreasing in silt organic-mineral complex and fine sand organic-mineral complex. There are evident negative correlation between the organic carbon content in clay organic-mineral complex and the content of clay organic-mineral complex in tillage layer, and there are obvious positive correlation between the organic carbon content in silt organic-mineral complex and fine sand organic-mineral complex and the content of silt organic-mineral complex and fine sand organic-mineral complex in soil. |
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| Keywords: | Black soil Organic carbon Tillage Organic-mineral complex |
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