| 南京城市土壤磷的形态和吸附-解吸特征 |
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| 引用本文： | 卢瑛,龚子同,张甘霖.南京城市土壤磷的形态和吸附-解吸特征[J].土壤通报,2003,34(1):40-43. |
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| 作者姓名： | 卢瑛 龚子同 张甘霖 |
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| 作者单位： | 1. 华南农业大学资源环境学院,广东,广州,510642;中国科学院南京土壤研究所,江苏,南京,210008
2. 中国科学院南京土壤研究所,江苏,南京,210008 |
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| 基金项目： | 国家自然科学基金重点资助项目 (49831 0 0 4 )，中国科学院特别支持项目 |
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| 摘 要： | 研究了南京城市土壤有机磷、各形态无机磷的含量和比例以及磷的吸附 -解吸特性。结果表明 :随着土壤全磷含量的增加 ,Al-P、Fe -P、O -P、Ca -P含量、Al-P占全磷的比例增加 ,但有机磷占全磷的比例、Fe -P占全磷的比例减少 ;与非城区土壤相比较 ,城市土壤磷的吸附量低 ,磷的解吸量和解吸率高 ;城市土壤中Al -P的含量及其在全磷中的比例较高 ,而磷的吸附量低、解吸率高是导致城市地下水磷浓度偏高的重要原因之一。
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| 关 键 词： | 城市土壤 磷 形态 吸附一解吸 南京 |
| 文章编号： | 0564-3945(2003)01-0040-04 |
| 修稿时间： | 2001年11月12 |
Phosphorus Forms and Adsorpyion-desorption Characteristics of Urban Soils in Nanjing |
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| LU Ying ,GONG Zi-tong ,ZHANG Gan-lin.Phosphorus Forms and Adsorpyion-desorption Characteristics of Urban Soils in Nanjing[J].Chinese Journal of Soil Science,2003,34(1):40-43. |
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| Authors: | LU Ying GONG Zi-tong ZHANG Gan-lin |
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| Institution: | LU Ying 1,2,GONG Zi-tong 2,ZHANG Gan-lin 2 |
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| Abstract: | The contents and proporation of organic P,and inorganic P, and P adsorption-desorption characteristics of urban soils in Nanjing were studied.The results indicated that:with the increase of soil total P content,the content of soil Al-P,Fe-P,Ca-P and the raito of Al-P to total P increased, and the ratio of organic P to total P,the ratio of Fe-P to total P decreased.Urban soils in Nanjing had lower P adsorption amount,higher P desorption amount and higher P desorption ratio as compared with non-urban natural soils.The high content and proporation of Al-P,low P adsorption capacity and high P desorption ratio led to high P concentration in groundwater. |
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| Keywords: | Urban soil Phosphorus Form Absorption-desorption Nanjing |
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