以乌江流域石灰岩、白云质灰岩、白云岩、硅质岩、页岩和砂岩等沉积岩的13条风化剖面为对象,运用R型分层聚类分析和质量平衡计算方法,研究了这些岩石风化过程中稀土元素(REE)的富集与释放及其对植物生长和河水REE分布的影响,目的是为河水物质来源研究和为农业生产提供依据. 结果表明: (1) 乌江流域石灰土中REE的富集程度显著高于各自母岩、黄壤、上陆壳(UCC)、中国土壤(CS)和世界土壤(WS);(2) 沉积岩风化过程中REE的富集特征和机制可能与母岩中REE分布特征以及风化剖面中有机质、铁(氢)氧化物和粘土矿物的吸附有关;(3) 沉积岩风化过程中释放的REE可为植物吸收利用;(4) 石灰岩等沉积岩风化过程中REE和Fe等元素的释放对河水溶解态REE的分布有重要影响.
参考文献
| [1] | 熊炳昆;陈蓬;郭伯生.稀土农林研究与应用[M].北京:冶金工业出版社,2000:1. |
| [2] | Volokh A A;Gorbunov A V;Gundorina S F et al.Phosphorus fertilizer production as a source of rare earth elements pollution of the environment[J].Science of the Total Environment,1990,95:141. |
| [3] | Zhu W F;Xu S Q;Shao P P et al.Biological effect of rare earth elements in south of Jiangxi Province[J].China Environmental Science,1997,17(01):63. |
| [4] | Zhang S;Shan X .Speciation of rare earth elements in soil and accumulation by wheat with rare earth fertilizer application[J].Environmental Pollution,2001,112:395. |
| [5] | Franca E J;De Nadai Fernandes E A;Bacchi M A et al.Pathway of rare earth elements in a Brazilian forestry fragment[J].Journal of Alloys and Compounds,2002,344:21. |
| [6] | Nesbitt H W .Mobility and fractionation of rare earth elements during weathering of a granodiorite[J].Nature,1979,279:206. |
| [7] | Middelburg J J;Van der Weijden C H;Woittiez J R W .Chemical processes affecting the mobility of major,minor and trace elements during weathering of granitic rocks[J].Chemical Geology,1988,68:253. |
| [8] | Ji HB.;Wang SJ.;Ouyang ZY.;Zhang S.;Sun CX.;Liu XM.;Zhou DQ. .Geochemistry of red residua underlying dolomites in karst terrains of Yunnan-Guizhou Plateau II. The mobility of rare earth elements during weathering[J].Chemical geology,2004(1/2):29-50. |
| [9] | Chadwick OA.;Gavenda RT.;Kelly EF.;Ziegler K.;Olson CG.;Elliott WC. Hendricks DM. .The impact of climate on the biogeochemical functioning of volcanic soils[J].Chemical geology,2003(3-4):195-223. |
| [10] | Qi L;Hu J;Conrad Gregoire D .Determination of trace elements in granites by inductively coupled plasma mass spectrometry[J].Talanta,2000,51:507. |
| [11] | McLennan S M .Rare earth elements in sedimentary rock s:influence of provenance and sedimentary processes[J].Reviews in Mineralogy,1989,21:169. |
| [12] | 陈怀满.环境土壤学[M].北京:科学出版社,2005:549. |
| [13] | Taylor S R;Mclennan S M.The Continental Crust:Its Composition and Evolution[M].Oxford:Blackwell Science Publishers,1985:312. |
| [14] | Chen Y;Barak P .Iron nutrition of plants in calcareous soils[J].Advances in Agronomy,1982,35:217. |
| [15] | Marschener H .Role of root growth,arbuscular mycorrhiza,and root exudates for the efficiency in nutrient acquisition[J].Field Crops Research,1998,56:203. |
| [16] | Landeweert R.;Finlay RD.;Kuyper TW.;van Breemen N.;Hoffland E. .Linking plants to rocks: ectomycorrhizal fungi mobilize nutrients from minerals [Review][J].Trends in Ecology & Evolution,2001(5):248-254. |
| [17] | Strom, L;Owen, A G;Godbold, D L;Jones, D L .Organic acid behaviour in a calcareous soil implications for rhizosphere nutrient cycling.[J].Soil Biology and Biochemistry,2005(11):2046-2054. |
| [18] | 邢光熹;朱建国.土壤微量元素和稀土元素化学[M].北京:科学出版社,2003:1. |
| [19] | 韩贵琳,刘丛强.喀斯特河流溶解态稀土元素组成变化及其控制因素[J].中国岩溶,2004(03):177-186. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%