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Factors influencing the availability of nitrogen in thinned and unthinned Douglas-fir stands in the central Oregon Cascades
Soil N mineralized during 7-day anaerobic incubation at 40°C (‘available’ N) was compared at two soil depths and correlated to soil and site factors in Douglas-fir stands with different combinations of thinning and multinutrient fertilization. Available N expressed either on an area basis (kg ha −1)...
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| Published in: | Forest ecology and management 1997-06, Vol.93 (3), p.195-203 |
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| Main Authors: | , |
| Format: | Article |
| Language: | English |
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| cites | cdi_FETCH-LOGICAL-c486t-2ab12e11d4d071f330440e65b877860827c648e9fce288d6d62bd25321849cdc3 |
| container_end_page | 203 |
| container_issue | 3 |
| container_start_page | 195 |
| container_title | Forest ecology and management |
| container_volume | 93 |
| creator | Martinez, Alejandro Velazquez Perry, David A. |
| description | Soil N mineralized during 7-day anaerobic incubation at 40°C (‘available’ N) was compared at two soil depths and correlated to soil and site factors in Douglas-fir stands with different combinations of thinning and multinutrient fertilization. Available N expressed either on an area basis (kg ha
−1) or on a concentration basis (mg kg
−1) at the two depths did not vary significantly by stocking density, treatment, or density-treatment interaction. There was a significant difference between the soil depths, averaging 39 mg kg
−1 at 0–20 cm depth, and 20 mg kg
−1 at 20–40 cm depth. Available N was positively correlated with total soil N, exchangeable Ca, and adjusted aspect (the former two factors accounting for 46% of the total variation), and negatively with rock content and slope steepness. Stand density had no effect. |
| doi_str_mv | 10.1016/S0378-1127(96)03953-9 |
| format | article |
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−1) or on a concentration basis (mg kg
−1) at the two depths did not vary significantly by stocking density, treatment, or density-treatment interaction. There was a significant difference between the soil depths, averaging 39 mg kg
−1 at 0–20 cm depth, and 20 mg kg
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−1) or on a concentration basis (mg kg
−1) at the two depths did not vary significantly by stocking density, treatment, or density-treatment interaction. There was a significant difference between the soil depths, averaging 39 mg kg
−1 at 0–20 cm depth, and 20 mg kg
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−1) or on a concentration basis (mg kg
−1) at the two depths did not vary significantly by stocking density, treatment, or density-treatment interaction. There was a significant difference between the soil depths, averaging 39 mg kg
−1 at 0–20 cm depth, and 20 mg kg
−1 at 20–40 cm depth. Available N was positively correlated with total soil N, exchangeable Ca, and adjusted aspect (the former two factors accounting for 46% of the total variation), and negatively with rock content and slope steepness. Stand density had no effect.</abstract><pub>Elsevier B.V</pub><doi>10.1016/S0378-1127(96)03953-9</doi><tpages>9</tpages></addata></record> |
| fulltext | fulltext |
| identifier | ISSN: 0378-1127 |
| ispartof | Forest ecology and management, 1997-06, Vol.93 (3), p.195-203 |
| issn | 0378-1127 1872-7042 |
| language | eng |
| recordid | cdi_proquest_miscellaneous_16037341 |
| source | ScienceDirect Journals |
| subjects | AZOTE CICLO BIOGEOQUIMICO CYCLE BIOGEOCHIMIQUE CYCLING EDAPHIC FACTORS FACTEUR EDAPHIQUE FACTORES EDAFICOS NITROGEN NITROGENO Nutrient cycling OREGON PSEUDOTSUGA MENZIESII Topoedaphic controls |
| title | Factors influencing the availability of nitrogen in thinned and unthinned Douglas-fir stands in the central Oregon Cascades |
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