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Titolo:
NET NITROGEN MINERALIZATION IN SOILS UNDER 6 INDIGENOUS TREE SPECIES,AN ABANDONED PASTURE AND A SECONDARY FOREST IN THE ATLANTIC LOWLANDS OF COSTA-RICA
Autore:
MONTAGNINI F; SANCHO F;
Indirizzi:
YALE UNIV,SCH FORESTRY & ENVIRONM STUDIES,370 PROSPECT NEW HAVEN CT 06511 UNIV COSTA RICA,CTR INVEST AGRON SAN JOSE COSTA RICA
Titolo Testata:
Plant and soil
fascicolo: 1, volume: 162, anno: 1994,
pagine: 117 - 124
SICI:
0032-079X(1994)162:1<117:NNMISU>2.0.ZU;2-9
Fonte:
ISI
Lingua:
ENG
Soggetto:
SOUTHERN APPALACHIANS; AGROFORESTRY SYSTEMS; BLACK LOCUST; NITRIFICATION; STANDS; LITTERFALL; CHEMISTRY; USA;
Keywords:
DALBERGIA TUCURENSIS; DIPTERYX PANAMENSIS; HYERONIMA ALCHORNEOIDES; NITRIFICATION; STRYPHNODENDRON MICROSTACHYUM; VOCHYSIA FERRUGINEA; VOCHYSIA GUATEMALENSIS;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Science Citation Index Expanded
Science Citation Index Expanded
Citazioni:
35
Recensione:
Indirizzi per estratti:
Citazione:
F. Montagnini e F. Sancho, "NET NITROGEN MINERALIZATION IN SOILS UNDER 6 INDIGENOUS TREE SPECIES,AN ABANDONED PASTURE AND A SECONDARY FOREST IN THE ATLANTIC LOWLANDS OF COSTA-RICA", Plant and soil, 162(1), 1994, pp. 117-124

Abstract

Nitrogen mineralization, nitrification potentials, pH, total N, C, extractable P and cations were measured in soils under 4-year-old, mono-specific stands of six fast-growing, native tree species, an abandonedpasture, and a 20-year-old secondary forest, as part of a study on the use of indigenous tree species for rehabilitation of soil fertility on degraded pastures at the La Selva Biological Station in the Atlantic humid lowlands of Costa Rica. Soil net nitrification potential rateswere higher under two N-fixing, leguminous species, Stryphnodendron microstachyum Poepp. et Endl. (1.1-1.9 mg kg(-1) day(-1)) and Dalbergiatucurensis Donn. Smith (0.7-1.5 mg kg(-1) day(-1)), than under the non-N-fixing trees in the plantation, Vochysia guatemalesis Don. Sm., Vochysia ferruginea Mart, Dipteryx panamensis (Pittier) Record and Mell and Hyeronima alchorneoides Fr. Allemao (0.2-0.8 mg kg(-1) day(-1)). Values under the N-fixing trees were comparable to those found in secondary forest. There were no statistically significant differences in soil total N or in other nurtients between the species. Results of pH measurements done before and after incubation did not show any clear evidence of a pH drop attributable to nitrification.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 03/12/20 alle ore 15:53:23