Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1590/S0100-06832006000200009 |
Phosphorus distribution in different soil orders in the semi-arid states of Paraiba and Pernambuco, Brazil | |
da Silveira, MML; Araujo, MDB; Sampaio, EVDB | |
通讯作者 | da Silveira, MML |
来源期刊 | REVISTA BRASILEIRA DE CIENCIA DO SOLO
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ISSN | 0100-0683 |
出版年 | 2006 |
卷号 | 30期号:2页码:281-291 |
英文摘要 | Most soils in semi-arid Northeastern Brazil are considered phosphorus deficient. The great diversity of orders they belong to, however, indicates that they are not similar in relation to the concentrations of their different P forms. The distribution of phosphorus forms in 69 soils of the most common soil orders in the semi-arid region was evaluated in samples from the 0-20 and 20-40 cm soil layers. Phosphorus was determined by Mehlich-1 and by a sequential fractionation, through extractions with resin, NaHCO3, NaOH and H2SO4, followed by peroxide/sulfuric digestion. Total P (the sum of all fractions) varied front 52 to 1625 mg kg(-1). Most soils were in a range from 100 to 200 mg kg(-1) in the 0-20 cm layer, with a large variability between and within soil orders. Large variability was also observed for all P fractions. In general, Fluvic Neossols, Vertisols, Luvisols and Cambisols had the highest total P values; Argisols, Litholic Neosols and Latosols, intermediate values; and Regolitic Neosols, Planosols and Quartzarenic Neosols, the lowest values. The largest proportions of total P were in the residual fraction and the smallest in the labile fractions (resin-P and NaHCO3-Pi), which together represented 7-12 % of total P. Mehlich-1 extracted low proportions of P from Vertissols (1 %) and high proportion from Latosols (24 %), while the opposite was true for bicarbonate extraction (11 and 5 % respectively). Resin extracted low proportions from all soil orders (1 to 6 %). |
英文关键词 | P. fractionation labile p organic P inorganic P residual P |
类型 | Article |
语种 | 葡萄牙语 |
国家 | Brazil |
收录类别 | SCI-E |
WOS记录号 | WOS:000237402200009 |
WOS关键词 | NORTHEASTERN BRAZIL ; FRACTIONS ; PEDOGENESIS ; FORMS ; TRANSFORMATIONS ; TOPOSEQUENCE ; AVAILABILITY ; CULTIVATION ; ADSORPTION ; LATOSOLS |
WOS类目 | Soil Science |
WOS研究方向 | Agriculture |
资源类型 | 期刊论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/152970 |
作者单位 | (1)UFRPE, Dept Solos, BR-52171900 Recife, PE, Brazil;(2)UFPE, Dept Ciencias Geog, Cidade Univ, BR-50740540 Recife, PE, Brazil;(3)UFPE, Dept Energia Nucl, Recife, PE, Brazil |
推荐引用方式 GB/T 7714 | da Silveira, MML,Araujo, MDB,Sampaio, EVDB. Phosphorus distribution in different soil orders in the semi-arid states of Paraiba and Pernambuco, Brazil[J],2006,30(2):281-291. |
APA | da Silveira, MML,Araujo, MDB,&Sampaio, EVDB.(2006).Phosphorus distribution in different soil orders in the semi-arid states of Paraiba and Pernambuco, Brazil.REVISTA BRASILEIRA DE CIENCIA DO SOLO,30(2),281-291. |
MLA | da Silveira, MML,et al."Phosphorus distribution in different soil orders in the semi-arid states of Paraiba and Pernambuco, Brazil".REVISTA BRASILEIRA DE CIENCIA DO SOLO 30.2(2006):281-291. |
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