Effects of dinitrogen-fixing trees on phosphorus biogeochemical cycling in contrasting forests

Journal Article · Fri Sep 01 04:00:00 EDT 1995 · Soil Science Society of America Journal

DOI:https://doi.org/10.2136/sssaj1995.03615995005900050035x· OSTI ID:151253

Zou, X ^[1]; Binkley, D ^[2]; Caldwell, B A ^[3]

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1. Univ. of Puerto Rico, San Juan (Puerto Rico)
2. Colorado State Univ., Ft. Collins, CO (United States)
3. Oregon State Univ., Cornvallis, OR (United States)

Phosphorus availability in soils is controlled by both geochemical and biological reactions. Dinitrogen-fixing trees differ from non-N{sub 2}-fixing trees in litter production and litter chemistry, and these differences may substantially alter soil P biogeochemistry. We examined the effects of two N{sub 2}-fixing tree species on labile P pools and potential P transformation rates and correlated these variables with soil acid phosphatase activity. Experimental treatments include stands of N{sub 2}-fixing red alder (Alnus rubra Bong.), conifers, and a mixture of both in Oregon, and plantations of N{sub 2}-fixing Albizia falcataria (L.) Fosberg, Eucalyptus saligna Sm., and a mixture of both in Hawaii. Our results suggest that N{sub 2}-fixing trees increase soil labile P{sub o} levels and soil phosphatase activities whereas their interactions with non-N{sub 2}-fixing trees vary with species and may result in altering both geochemical and biological P transformations. 32 refs., 3 figs., 2 tabs.

• Sponsoring Organization: USDOE
• OSTI ID: 151253
• Journal Information: Soil Science Society of America Journal, Journal Name: Soil Science Society of America Journal Journal Issue: 5 Vol. 59; ISSN 0361-5995; ISSN SSSJD4
• Country of Publication: United States
• Language: English

Related Subjects

40 CHEMISTRY
55 BIOLOGY AND MEDICINE
BASIC STUDIES
58 GEOSCIENCES
BIOCHEMISTRY
CHEMICAL REACTIONS
ENZYMES
FORESTS
GEOCHEMISTRY
HAWAII
MINERALIZATION
NITROGEN
NITROGEN FIXATION
PHOSPHATASES
PHOSPHORUS
SOILS
TREES
VITRIFICATION