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Selected soil morphological, mineralogical and sesquioxide properties of rehabilitated and secondary forests

Problem statement: The tropical rain forests in Southeast Asia have been characterized by several researchers. However empirical data on soil characteristics under degraded forest land in tropical rain forest and rehabilitated program are limited. A study was conducted to evaluate the soil morpholog...

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Main Authors:	Saga, B. T., Ahmed, Osumanu Haruna, Jamaluddin, Aiza Shaliha, Abdul Hamid, Hazandy, Jusop, Shamshuddin, Nik Ab. Majid, Nik Muhamad, Hassan, Affendy, Yusof, K. H., Abdu, Arifin
Format:	Article
Language:	English
Published:	Science Publications 2010
Online Access:	http://psasir.upm.edu.my/id/eprint/16648/1/ajessp.2010.389.394.pdf http://psasir.upm.edu.my/id/eprint/16648/ http://www.thescipub.com/abstract/10.3844/ajessp.2010.389.394
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spelling	my.upm.eprints.166482017-12-05T08:17:05Z http://psasir.upm.edu.my/id/eprint/16648/ Selected soil morphological, mineralogical and sesquioxide properties of rehabilitated and secondary forests Saga, B. T. Ahmed, Osumanu Haruna Jamaluddin, Aiza Shaliha Abdul Hamid, Hazandy Jusop, Shamshuddin Nik Ab. Majid, Nik Muhamad Hassan, Affendy Yusof, K. H. Abdu, Arifin Problem statement: The tropical rain forests in Southeast Asia have been characterized by several researchers. However empirical data on soil characteristics under degraded forest land in tropical rain forest and rehabilitated program are limited. A study was conducted to evaluate the soil morphology, mineralogical and sesquioxide properties of a rehabilitated degraded forest land (19 years after it was planted with various indigenous species) in comparison with an adjacent secondary forest. Approach: Soil samples were air-dried and pass through a 2 mm sieve. Soil morphology was determined based on field observation. The non-crystalline (amorphous) of Al, Fe and Si oxides and hydroxides (Alo, Feo and Sio) were extracted with ammonium oxalate while the dithionate-citrate-bicarbonate (DCB) method was used for extracting (crystalline) the Al, Fe and Si oxides and hydroxides (Ald, Fed and Sid). The concentrations of extracted Al, Fe and Si were determined by atomic absorption spectroscopy. Mineralogical compositions were identified by X-ray diffraction method. Results: The A-horizon of secondary forest was darker and thicker than that of the rehabilitated forest. Root mat at the secondary forest was well-developed compared to the rehabilitated forest. The clay minerals were dominated with kaolinite and illite to a lesser extent of goethite and hematite accompanied with low values of activity ratio of Al and Fe oxides and hydroxides, indicating that the soils were highly weathered. Conclusion/Recommendations: The difference between rehabilitated and secondary forests was root abundance where secondary forest had most. Good root penetration in the secondary forest indicates that the soil texture there was not heavy. Soils in the rehabilitated and secondary forests were strongly weathered (high presence of kaolin minerals), but the low presence of sesquioxides suggests that they are yet to reached the ultimately weathered phase. The soil properties in terms of morphology, sesquioxides and clay minerals should be taken into account for better management of forest rehabilitation program in tropical regions. Science Publications 2010 Article PeerReviewed application/pdf en http://psasir.upm.edu.my/id/eprint/16648/1/ajessp.2010.389.394.pdf Saga, B. T. and Ahmed, Osumanu Haruna and Jamaluddin, Aiza Shaliha and Abdul Hamid, Hazandy and Jusop, Shamshuddin and Nik Ab. Majid, Nik Muhamad and Hassan, Affendy and Yusof, K. H. and Abdu, Arifin (2010) Selected soil morphological, mineralogical and sesquioxide properties of rehabilitated and secondary forests. American Journal of Environmental Sciences, 6 (4). pp. 389-394. ISSN 1553-345X; ESSN: 1558-3910 http://www.thescipub.com/abstract/10.3844/ajessp.2010.389.394 10.3844/ajessp.2010.389.394
institution	Universiti Putra Malaysia
building	UPM Library
collection	Institutional Repository
continent	Asia
country	Malaysia
content_provider	Universiti Putra Malaysia
content_source	UPM Institutional Repository
url_provider	http://psasir.upm.edu.my/
language	English
description	Problem statement: The tropical rain forests in Southeast Asia have been characterized by several researchers. However empirical data on soil characteristics under degraded forest land in tropical rain forest and rehabilitated program are limited. A study was conducted to evaluate the soil morphology, mineralogical and sesquioxide properties of a rehabilitated degraded forest land (19 years after it was planted with various indigenous species) in comparison with an adjacent secondary forest. Approach: Soil samples were air-dried and pass through a 2 mm sieve. Soil morphology was determined based on field observation. The non-crystalline (amorphous) of Al, Fe and Si oxides and hydroxides (Alo, Feo and Sio) were extracted with ammonium oxalate while the dithionate-citrate-bicarbonate (DCB) method was used for extracting (crystalline) the Al, Fe and Si oxides and hydroxides (Ald, Fed and Sid). The concentrations of extracted Al, Fe and Si were determined by atomic absorption spectroscopy. Mineralogical compositions were identified by X-ray diffraction method. Results: The A-horizon of secondary forest was darker and thicker than that of the rehabilitated forest. Root mat at the secondary forest was well-developed compared to the rehabilitated forest. The clay minerals were dominated with kaolinite and illite to a lesser extent of goethite and hematite accompanied with low values of activity ratio of Al and Fe oxides and hydroxides, indicating that the soils were highly weathered. Conclusion/Recommendations: The difference between rehabilitated and secondary forests was root abundance where secondary forest had most. Good root penetration in the secondary forest indicates that the soil texture there was not heavy. Soils in the rehabilitated and secondary forests were strongly weathered (high presence of kaolin minerals), but the low presence of sesquioxides suggests that they are yet to reached the ultimately weathered phase. The soil properties in terms of morphology, sesquioxides and clay minerals should be taken into account for better management of forest rehabilitation program in tropical regions.
format	Article
author	Saga, B. T. Ahmed, Osumanu Haruna Jamaluddin, Aiza Shaliha Abdul Hamid, Hazandy Jusop, Shamshuddin Nik Ab. Majid, Nik Muhamad Hassan, Affendy Yusof, K. H. Abdu, Arifin
spellingShingle	Saga, B. T. Ahmed, Osumanu Haruna Jamaluddin, Aiza Shaliha Abdul Hamid, Hazandy Jusop, Shamshuddin Nik Ab. Majid, Nik Muhamad Hassan, Affendy Yusof, K. H. Abdu, Arifin Selected soil morphological, mineralogical and sesquioxide properties of rehabilitated and secondary forests
author_facet	Saga, B. T. Ahmed, Osumanu Haruna Jamaluddin, Aiza Shaliha Abdul Hamid, Hazandy Jusop, Shamshuddin Nik Ab. Majid, Nik Muhamad Hassan, Affendy Yusof, K. H. Abdu, Arifin
author_sort	Saga, B. T.
title	Selected soil morphological, mineralogical and sesquioxide properties of rehabilitated and secondary forests
title_short	Selected soil morphological, mineralogical and sesquioxide properties of rehabilitated and secondary forests
title_full	Selected soil morphological, mineralogical and sesquioxide properties of rehabilitated and secondary forests
title_fullStr	Selected soil morphological, mineralogical and sesquioxide properties of rehabilitated and secondary forests
title_full_unstemmed	Selected soil morphological, mineralogical and sesquioxide properties of rehabilitated and secondary forests
title_sort	selected soil morphological, mineralogical and sesquioxide properties of rehabilitated and secondary forests
publisher	Science Publications
publishDate	2010
url	http://psasir.upm.edu.my/id/eprint/16648/1/ajessp.2010.389.394.pdf http://psasir.upm.edu.my/id/eprint/16648/ http://www.thescipub.com/abstract/10.3844/ajessp.2010.389.394
_version_	1643826276629217280
score	13.211869

Selected soil morphological, mineralogical and sesquioxide properties of rehabilitated and secondary forests

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