| 侵蚀泥沙、有机质和全氮富集规律研究 |
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| 引用本文： | 张兴昌,邵明安.侵蚀泥沙、有机质和全氮富集规律研究[J].应用生态学报,2001,12(4):541-544. |
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| 作者姓名： | 张兴昌 邵明安 |
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| 作者单位： | 中国科学院-水利部水土保持研究所黄土高原土壤侵蚀与 |
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| 基金项目： | 中国科学院知识创新工程项目(KZCY2-411)和国家杰出青年科学基金资助项目(400251060). |
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| 摘 要： | 在自然降雨下，研究降雨，坡度，耕作和施肥对侵蚀泥沙，有机质和全N富集率的影响，分析土壤和泥沙颗粒组成，富集与泥沙有机质和全N富集的关系，揭示土壤有机质和全N在泥沙中的富集规律，结果表明，泥沙粘粒的富集导致有机质和全N的富集，泥沙粘粒，有机质和全N富集率分别平均为1．77，2．09和1．61，土壤侵蚀模数与泥沙有机质和全N富集率呈显著的负相关关系，降雨，坡度，施肥和耕作措施对泥沙有机质富集作用的影响通过减少土壤侵蚀模数来实现的，减少土壤侵蚀的措施可增加泥沙有机质和全N的富集。
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| 关 键 词： | 泥沙 有机质 全N富集 土壤侵蚀 |
| 文章编号： | 1001-9332(2001)04-0541-04 |
| 修稿时间： | 2000年3月20日 |
Enrichment of organic matter and nitrogen in eroded bedloads. |
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| ZHANG Xingchang and SHAO Mingan.Enrichment of organic matter and nitrogen in eroded bedloads.[J].Chinese Journal of Applied Ecology,2001,12(4):541-544. |
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| Authors: | ZHANG Xingchang and SHAO Mingan |
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| Institution: | State Key Laboratory of Soil Erosion and Dryfarming on Loess Plateau, Yangling, Shaanxi 712100. zhangxc@ms.iswc.ac.cn |
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| Abstract: | Under natural rainfall,the influences of rainfall,slope gradient,tillage and fertilization on the enrichment ratio(ER) of organic matter(OM) and total nitrogen(TN) in eroded bedloads and the relationship between the ER and the composition of eroded bedloads was analyzed.The results showed that the enrichment of clay(ER clay ) resulted in the enrichment of OM and TN,and the average value of ER clay ,ER OM and ER TN under different slope gradients was 1 77,2 09 and 1 61,respectively.The soil erosion module was negatively correlated with ER OM and ER TN .The measures for soil erosion may increase the ER OM and ER TN affected by rainfall,slope gradient,tillage and fertilization. |
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| Keywords: | Bedload Organic matter Nitrogen Enichment |
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