Effects of land use change on P bioavailability determined by chemical fractionation and 31P-NMR spectroscopy in a Nothofagus forest and adjacent grassland
The aim of this study was to compare P bioavailability in a Nothofagus rainforest Andisol (FS) and an adjacent clear-cut grassland soil (GS) in southern Chile to evaluate the effects of land use change on P chemical forms determined by chemical fractionation and 31P-NMR spectroscopy. Total phosphoru...
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| Lenguaje: | English |
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Chilean Society of Soil Science / Sociedad Chilena de la Ciencia del Suelo
2015
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oai:scielo:S0718-951620150004000192016-01-14Effects of land use change on P bioavailability determined by chemical fractionation and 31P-NMR spectroscopy in a Nothofagus forest and adjacent grasslandRedel,Y. DEscudey,MAlvear,MConrad,JBorie,F Phosphorus fractions forest soil allophanic soil organic P The aim of this study was to compare P bioavailability in a Nothofagus rainforest Andisol (FS) and an adjacent clear-cut grassland soil (GS) in southern Chile to evaluate the effects of land use change on P chemical forms determined by chemical fractionation and 31P-NMR spectroscopy. Total phosphorus (P), Olsen P, microbial P, different soil P fractions (determined using a modified Hedley procedure), 31P-NMR spectroscopy results, acid phosphatase (P-ase) activity, pH and organic C were analyzed and compared. Forest samples were collected from the mineral soil at a depth of 2-20 cm and were compared with those collected from grassland soil at the same depth. Total P ranged from 2028 mg kg-1 (FS) to 2157 mg kg-1 (GL)and total organic P ranged from 829 mg kg-1 (FS) to 1176 mg kg-1 (GL). On the contrary, Olsen P, microbial P, labile P and P-ase activity were higher in the evergreen forest soil than in the grassland, with the predominance of the moderately labile (NaOH-Po) fraction, which ranged from 668 to 720 mg kg-1 in both soils. Phosphorus was mainly present in monoester-P form in the NMR extract in both soils (67 % on average). Other 31P-NMR signals were identified as C2-myo-inositol phosphate and scyllo-inositol hexakisphosphate. The results suggest that land use change from forest to grassland will reduce P bioavailability and P-ase activity.info:eu-repo/semantics/openAccessChilean Society of Soil Science / Sociedad Chilena de la Ciencia del SueloJournal of soil science and plant nutrition v.15 n.4 20152015-12-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-95162015000400019en10.4067/S0718-95162015005000074 |
| institution |
Scielo Chile |
| collection |
Scielo Chile |
| language |
English |
| topic |
Phosphorus fractions forest soil allophanic soil organic P |
| spellingShingle |
Phosphorus fractions forest soil allophanic soil organic P Redel,Y. D Escudey,M Alvear,M Conrad,J Borie,F Effects of land use change on P bioavailability determined by chemical fractionation and 31P-NMR spectroscopy in a Nothofagus forest and adjacent grassland |
| description |
The aim of this study was to compare P bioavailability in a Nothofagus rainforest Andisol (FS) and an adjacent clear-cut grassland soil (GS) in southern Chile to evaluate the effects of land use change on P chemical forms determined by chemical fractionation and 31P-NMR spectroscopy. Total phosphorus (P), Olsen P, microbial P, different soil P fractions (determined using a modified Hedley procedure), 31P-NMR spectroscopy results, acid phosphatase (P-ase) activity, pH and organic C were analyzed and compared. Forest samples were collected from the mineral soil at a depth of 2-20 cm and were compared with those collected from grassland soil at the same depth. Total P ranged from 2028 mg kg-1 (FS) to 2157 mg kg-1 (GL)and total organic P ranged from 829 mg kg-1 (FS) to 1176 mg kg-1 (GL). On the contrary, Olsen P, microbial P, labile P and P-ase activity were higher in the evergreen forest soil than in the grassland, with the predominance of the moderately labile (NaOH-Po) fraction, which ranged from 668 to 720 mg kg-1 in both soils. Phosphorus was mainly present in monoester-P form in the NMR extract in both soils (67 % on average). Other 31P-NMR signals were identified as C2-myo-inositol phosphate and scyllo-inositol hexakisphosphate. The results suggest that land use change from forest to grassland will reduce P bioavailability and P-ase activity. |
| author |
Redel,Y. D Escudey,M Alvear,M Conrad,J Borie,F |
| author_facet |
Redel,Y. D Escudey,M Alvear,M Conrad,J Borie,F |
| author_sort |
Redel,Y. D |
| title |
Effects of land use change on P bioavailability determined by chemical fractionation and 31P-NMR spectroscopy in a Nothofagus forest and adjacent grassland |
| title_short |
Effects of land use change on P bioavailability determined by chemical fractionation and 31P-NMR spectroscopy in a Nothofagus forest and adjacent grassland |
| title_full |
Effects of land use change on P bioavailability determined by chemical fractionation and 31P-NMR spectroscopy in a Nothofagus forest and adjacent grassland |
| title_fullStr |
Effects of land use change on P bioavailability determined by chemical fractionation and 31P-NMR spectroscopy in a Nothofagus forest and adjacent grassland |
| title_full_unstemmed |
Effects of land use change on P bioavailability determined by chemical fractionation and 31P-NMR spectroscopy in a Nothofagus forest and adjacent grassland |
| title_sort |
effects of land use change on p bioavailability determined by chemical fractionation and 31p-nmr spectroscopy in a nothofagus forest and adjacent grassland |
| publisher |
Chilean Society of Soil Science / Sociedad Chilena de la Ciencia del Suelo |
| publishDate |
2015 |
| url |
http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-95162015000400019 |
| work_keys_str_mv |
AT redelyd effectsoflandusechangeonpbioavailabilitydeterminedbychemicalfractionationand31pnmrspectroscopyinanothofagusforestandadjacentgrassland AT escudeym effectsoflandusechangeonpbioavailabilitydeterminedbychemicalfractionationand31pnmrspectroscopyinanothofagusforestandadjacentgrassland AT alvearm effectsoflandusechangeonpbioavailabilitydeterminedbychemicalfractionationand31pnmrspectroscopyinanothofagusforestandadjacentgrassland AT conradj effectsoflandusechangeonpbioavailabilitydeterminedbychemicalfractionationand31pnmrspectroscopyinanothofagusforestandadjacentgrassland AT borief effectsoflandusechangeonpbioavailabilitydeterminedbychemicalfractionationand31pnmrspectroscopyinanothofagusforestandadjacentgrassland |
| _version_ |
1714206517597569024 |