| 南昌市城-郊-乡梯度五种森林类型表层土壤磷素分布格局(英文) |
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| 引用本文： | 陈伏生,李茜,詹书侠.南昌市城-郊-乡梯度五种森林类型表层土壤磷素分布格局(英文)[J].林业研究,2010,21(1):39-44. |
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| 作者姓名： | 陈伏生 李茜 詹书侠 |
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| 作者单位： | [1]南昌大学生命科学学院,江西南昌330031 [2]Cornell大学自然资源系,美国纽约Ithaca,14853 |
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| 基金项目： | funded by the National Natural Science Foundation of China(No.3060047&30960311);;Natural Science Foundation of Jiangxi Provinces(No.2007GQN1935) |
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| 摘 要： | 城市化所改变的土壤利用方式将显著地影响土壤磷素(P)含量水平。本研究沿地处中亚热带地区的南昌市选取灌丛、松林、针阔混交林、常绿阔叶林和毛竹林为研究对象,采用改进Hedley的P素连续分级法分析了土壤全P及各功能P形态的分布规律。结果表明:森林表层土壤全P和可提取态P的含喇均表现为城区(0.71g·kg-1和378.50mg·kg-1)明显高于郊区(0.30g·kg-1和150.74mg·kg-1)和农村(0.31g·kg-1和147.38mg·kg-1)(p0.05)。在树脂P、NaHCO3-P、NaOH-P、声波P和HCl-P等5种功能P形态中,城区森林土壤HCl-P的相对含度最高,为36%,明显高于其郊区相对含量为8%年农村相对含量为6%的水平。而郊区和农村地区,土壤NaOH-P是其主要的存在形态,其相对含量分别达到41%和50%。可见,城区土壤P积累将影响城市森林生态系统的P循环,且其高含量的HCl-P可能加速P在城区水生系统的富集。图3表2参32。
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| 关 键 词： | 丘陵红壤 磷素积累 土壤磷素分级 城市化 城市森林 |
| 收稿时间： | 30 September 2010 |
Topsoil phosphorus signature in five forest types along an urban-suburban-rural gradient in Nanchang,southern China |
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| Fu-sheng?Chen,Xi?Li,Greg?Nagle,Shu-xia?Zhan.Topsoil phosphorus signature in five forest types along an urban-suburban-rural gradient in Nanchang,southern China[J].Journal of Forestry Research,2010,21(1):39-44. |
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| Authors: | Fu-sheng Chen Xi Li Greg Nagle Shu-xia Zhan |
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| Affiliation: | (1) College of Life Sciences, Nanchang University, Nanchang, 330031, China;(2) Department of Natural Resources, Cornell University, Ithaca, NY 14853, USA;(3) South China Botanical Garden, Chinese Academy of Sciences, Guangzhou, 510650, China;(4) College of Life Sciences, Jiangxi Science &; Technology Normal University, Nanchang, 330038, China;(5) No. 999, Xuefuda Road, Honggutan New District, Nanchang, 330031, People’s Republic of China; |
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| Abstract: | Conversions from rural to urban land uses have the potential to greatly modify soil phosphorus (P) levels. Soils in shrubs, Masson pine forest, conifer and broadleaf mixed forest, evergreen broadleaved forest and bamboo forest in the mid-subtropical region along an urban-rural gradient in Nanchang City, southern China, were analyzed for total P and P fractions using the modified Hedley P sequential fractionation method. Results show that the topsoil total P and total exactable P concentrations were signific... |
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| Keywords: | hilly red soil phosphorus accumulation soil phosphorus fractionation urbanization urban forest |
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