| 包气带土体生物地球化学特征与氮转化研究—以河北平原正定试验场剖面为例 |
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| 关键词:unsaturated zone biogeochemistry circulation of nitrogen |
| 基金项目:国土资源部基础性研究项目第二课题(编号:9501110-02);国土资源部学科生长点“地下水微生态学研究”项目野外试验场研究成果之一 |
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| 摘要: |
| A Study of Biogeochemistry and Nitrogen Transform in the Unsaturated Soil Zone |
| For the purpose of studying biogeochemical circulation of nitrogen element, a borehole 18.45 m in depth was drilled in the unsaturated soil zone of Zhengding experimental site. Sediment samples were collected along the section. Water physical properties and some geochemical indexes were analysed, and bacteriologic examination of the samples was conducted. It is found that the changes of nitrogen element and TDS and Cl - and bacteria of the samples are not simply in linear distribution with the increasing depth of the section. They correspond to geological configuration and indicate environmental evolution. Being sensitive to bacteria and called "active layer",the clayey layer on the section plays a dominant role in nitrogen element transformation. The changes also indicate that there are many kinds of environmental evolution or global change information which remain to be drawn from the unsaturated zone. |
| REN Fu-hong,SUN Ji-chao,ZHANG Sheng,JIA Xiu-mei,ZHANG Cui-yun,YE Si-yuan.2001.A Study of Biogeochemistry and Nitrogen Transform in the Unsaturated Soil Zone[J].Acta Geoscientica Sinica,22(4):324-329. |
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