| 不同芦苇沼泽湿地土壤全氮季节动态变化和氮储量研究(简报) |
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| 引用本文： | 白军红,王庆改,丁秋祎,高海峰.不同芦苇沼泽湿地土壤全氮季节动态变化和氮储量研究(简报)[J].草业学报,2008,17(2):162-165. |
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| 作者姓名： | 白军红 王庆改 丁秋祎 高海峰 |
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| 作者单位： | 北京师范大学环境学院水环境模拟国家重点实验室,北京,100875;国家环境保护总局环境工程评估中心,北京,100012 |
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| 基金项目： | 国家自然科学基金
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国家重点基础研究发展计划(973计划) |
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| 摘 要： | 以向海湿地为研究对象,研究了封闭性湿地和开放性湿地土壤全氮含量的季节动态变化特征及其氮储量。结果表明,封闭性湿地与开放性湿地土壤全氮含量的季节动态变化过程既存在差异,又具有一定的相似性,2个典型区各层土壤中全氮含量均可采用四次多项式拟合进行动态模拟。封闭性湿地与开放性湿地土壤氮密度均由表层向下逐渐下降,二者1 m深的土壤氮密度分别为0.95和1.05 kg/m2,其中40 cm以上土层的贡献率均达到66%以上。
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| 关 键 词： | 湿地 土壤全氮 季节动态 氮密度 |
| 文章编号： | 1004-5759(2008)02-0162-04 |
| 修稿时间： | 2007年4月1日 |
Nitrogen stocks and seasonal variations of total nitrogen in Phragmites communis soils from different wetlands |
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| BAI Jun-hong,WANG Qing-gai,DING Qiu-yi,GAO Hai-feng.Nitrogen stocks and seasonal variations of total nitrogen in Phragmites communis soils from different wetlands[J].Acta Prataculturae Sinica,2008,17(2):162-165. |
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| Authors: | BAI Jun-hong WANG Qing-gai DING Qiu-yi GAO Hai-feng |
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| Abstract: | The Fulaowenpao and Erbaifangzi wetlands were chosen as typical sites to study the characteristics of seasonal dynamics of total nitrogen in marsh soils from both closed and open wetlands.There were both differences and similarities in the total nitrogen contents of both wetlands.Total nitrogen contents of soils from each soil layer were be fitted by three order polynomials,and these models gave a good fit,reflecting the changing seasonal dynamics of total nitrogen contents in soils.The nitrogen densities in the 1 m depth of the closed and open wetlands were 0.95 and 1.05 kg/m2,respectively.The contributing rates of soil layers above 40 cm accounted for more than 66% of the differences |
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| Keywords: | wetlands soil total nitrogen seasonal dynamic nitrogen density |
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