Soil N Fluxes in Three Contrasting Dry Tropical Forests
A comparative study of N fluxes in soil among a dry dipterocarp forest (DDF), a dry evergreen forest (DEF), and a hill evergreen forest (HEF) in Thailand was done. N fluxes in soil were estimated using an ion exchange resin core method and a buried bag method. Soil C and N pools were 38 C Mg/ha/30 c...
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| Format: | Article |
| Language: | English |
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Wiley
2001-01-01
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| Series: | The Scientific World Journal |
| Online Access: | http://dx.doi.org/10.1100/tsw.2001.383 |
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| author | Naoko Tokuchi Asami Nakanishi Chongrak Wachirinrat Hiroshi Takeda |
| author_facet | Naoko Tokuchi Asami Nakanishi Chongrak Wachirinrat Hiroshi Takeda |
| author_sort | Naoko Tokuchi |
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| description | A comparative study of N fluxes in soil among a dry dipterocarp forest (DDF), a dry evergreen forest (DEF), and a hill evergreen forest (HEF) in Thailand was done. N fluxes in soil were estimated using an ion exchange resin core method and a buried bag method. Soil C and N pools were 38 C Mg/ha/30 cm and 2.5 N Mg/ha/30 cm in DDF, 82 C Mg/ha/30 cm and 6.2 N Mg/ha/30 cm in DEF, and 167 C Mg/ha/30 cm and 9.3 N Mg/ha/30 cm in HEF. Low C concentration in the DDF and DEF sites was compensated by high fine soil content. In the highly weathered tropical soil, fine soil content seemed to be important for C accumulation. Temporal and vertical fluctuations of N fluxes were different among the sites. The highest N flux was exhibited at the onset of the wet season in DDF, whereas inorganic N production and estimated uptake of N were relatively stable during the wet season in DEF and HEF. It is suggested that N cycling in soil becomes stable in dry tropical forests to intermediate in temperate forests. N deposition may result in large changes of N cycling in the DDF and DEF due to low accumulations of C and N. |
| format | Article |
| id | doaj-art-e6932907ec104e39869b85f0188b5d0b |
| institution | OA Journals |
| issn | 1537-744X |
| language | English |
| publishDate | 2001-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | The Scientific World Journal |
| spelling | doaj-art-e6932907ec104e39869b85f0188b5d0b2025-08-20T02:21:03ZengWileyThe Scientific World Journal1537-744X2001-01-01153453810.1100/tsw.2001.383Soil N Fluxes in Three Contrasting Dry Tropical ForestsNaoko Tokuchi0Asami Nakanishi1Chongrak Wachirinrat2Hiroshi Takeda3Laboratory of Silvicullture, Graduate School of Agriculture, Kyoto University, JapanLaboratory of Silvicullture, Graduate School of Agriculture, Kyoto University, JapanLaboratory of Silvicullture, Graduate School of Agriculture, Kyoto University, JapanLaboratory of Silvicullture, Graduate School of Agriculture, Kyoto University, JapanA comparative study of N fluxes in soil among a dry dipterocarp forest (DDF), a dry evergreen forest (DEF), and a hill evergreen forest (HEF) in Thailand was done. N fluxes in soil were estimated using an ion exchange resin core method and a buried bag method. Soil C and N pools were 38 C Mg/ha/30 cm and 2.5 N Mg/ha/30 cm in DDF, 82 C Mg/ha/30 cm and 6.2 N Mg/ha/30 cm in DEF, and 167 C Mg/ha/30 cm and 9.3 N Mg/ha/30 cm in HEF. Low C concentration in the DDF and DEF sites was compensated by high fine soil content. In the highly weathered tropical soil, fine soil content seemed to be important for C accumulation. Temporal and vertical fluctuations of N fluxes were different among the sites. The highest N flux was exhibited at the onset of the wet season in DDF, whereas inorganic N production and estimated uptake of N were relatively stable during the wet season in DEF and HEF. It is suggested that N cycling in soil becomes stable in dry tropical forests to intermediate in temperate forests. N deposition may result in large changes of N cycling in the DDF and DEF due to low accumulations of C and N.http://dx.doi.org/10.1100/tsw.2001.383 |
| spellingShingle | Naoko Tokuchi Asami Nakanishi Chongrak Wachirinrat Hiroshi Takeda Soil N Fluxes in Three Contrasting Dry Tropical Forests The Scientific World Journal |
| title | Soil N Fluxes in Three Contrasting Dry Tropical Forests |
| title_full | Soil N Fluxes in Three Contrasting Dry Tropical Forests |
| title_fullStr | Soil N Fluxes in Three Contrasting Dry Tropical Forests |
| title_full_unstemmed | Soil N Fluxes in Three Contrasting Dry Tropical Forests |
| title_short | Soil N Fluxes in Three Contrasting Dry Tropical Forests |
| title_sort | soil n fluxes in three contrasting dry tropical forests |
| url | http://dx.doi.org/10.1100/tsw.2001.383 |
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