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[1]王水良,王平,王趁义,等.马尾松酸性根际环境中铝的化学行为——以重庆酸雨区马尾松林地土壤为例[J].应用与环境生物学报,2010,16(04):523-528.[doi:10.3724/SP.J.1145.2010.00523]
 WANG Shuiliang,WANG Ping,WANG Chenyi,et al.Chemical Behavior of Aluminum in the Acidic Rhizosphere of Pinus massoniana Lamb—A Case Study on Its Cultivation in Acid Forest Soil in Chongqing, China[J].Chinese Journal of Applied & Environmental Biology,2010,16(04):523-528.[doi:10.3724/SP.J.1145.2010.00523]
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马尾松酸性根际环境中铝的化学行为——以重庆酸雨区马尾松林地土壤为例()
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《应用与环境生物学报》[ISSN:1006-687X/CN:51-1482/Q]

卷:
16卷
期数:
2010年04期
页码:
523-528
栏目:
研究论文
出版日期:
2010-08-25

文章信息/Info

Title:
Chemical Behavior of Aluminum in the Acidic Rhizosphere of Pinus massoniana Lamb—A Case Study on Its Cultivation in Acid Forest Soil in Chongqing, China
作者:
王水良王平王趁义戴建远
(1南京林业大学化学工程学院 南京 210037)
(2湖州师范学院化学系 湖州 313000)
(3四川大学化学学院 成都 610064)
Author(s):
WANG Shuiliang WANG Ping WANG Chenyi DAI Jianyuan
(1School of Chemical Engineering, Nanjing Forestry University, Nanjing 210037, China)
(2Chemistry Department, Huzhou Normal College, Huzhou 313000, Zhejiang, China)
(3School of Chemistry, Sichuan University, Chengdu 610064, China)
关键词:
化学行为铝和铝形态酸性林地土壤–根系界面马尾松
Keywords:
chemical behavior Al and Al speciation acid forest soil soil-root interface Pinus massoniana Lamb
分类号:
X131.3 : Q948.1
DOI:
10.3724/SP.J.1145.2010.00523
文献标志码:
A
摘要:
以重庆酸雨区马尾松林地土壤为例,通过马尾松幼苗盆栽试验法研究了酸性土壤–马尾松根系界面铝(Al)的化学行为. 林地土壤中的铝可分级为交换态铝(Alex)、有机态铝(Alor)、氧化态铝(Alox)、碳酸盐态铝(Alc)和不溶态铝(Alin). 研究结果表明:共存盐基离子Ca2+、Mg2+、K+和Na+对Al3+在土壤–马尾松根系界面行为的影响呈正效应(缓解铝毒),影响顺序为Ca2+>Mg2+>K+≈Na+. 全氮和全磷含量与根系铝含量呈正相关;土壤有机质(Organic matter,OM)含量与根际Alor浓度呈正相关. 土壤pH值(<5.0)与根际Alex呈负相关,根际Alex大于非根际Alex,马尾松根系铝的吸收主要取决于根际土壤Alex含量,Alex进入根系后逐步与根细胞壁小分子有机化合物配位,主要以Alor累积于根部. 图1 表5 参20
Abstract:
The chemical behavior of aluminum in the acidic soil-root interface of Pinus massoniana Lamb seedlings was investigated by planting them in pots. The Al in soil was fractionated into five operationally defined forms [exchangeable (Alex), carbonate (Alc), oxide (Alox), organic (Alor), and insoluble (Alin) species]. The results showed: 1) coexisted base ions (Ca2+, Mg2+, K+, Na+) were positively related to Al3+ tolerance in soil-root interface, and their alleviation followed a decreasing order: Ca2+>Mg2+>K+≈Na+; 2) the contents of total P and N had positive effects on the Al accumulated in the roots; and 3) the organic matter (OM) was positive to the Alor in P. massonian rhizosphere. Besides, soil pH (<5.0) was negatively related to the rhizospheric Alex. Alex concentration was always higher in the rhizosphere than in bulk soil. The accumulated amount of Al absorbed in the plant roots mainly depended on the Alex quantity of the rhizosphere soil. The Alex entered into the roots and gradually complexed with the small organic molecules in root cell wall, mainly accumulated in the roots as Alor species. Fig 1, Tab 5, Ref 20

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备注/Memo

备注/Memo:
国家自然科学基金项目(No. 30771696)资助 Supported by the National Natural Science Foundation of China (No. 30771696)
更新日期/Last Update: 2010-08-25