Growth and nitrogen relations of coppiced black cottonwood and red alder in pure and mixed plantings
Journal Article
·
· Bot. Gaz. (Chicago); (United States)
Annual dry-matter production by 2-year-old coppice (stump sprouting) in mixed plantings of black cottonwood (Populus trichocarpa) and red alder (Alnus rubra) was greater than that in pure plantings. Cottonwood twigs from the mixed stands contained 18% more N than did twigs from the pure stands. Soil from the mixed stands and the pure alder stands contained 9% and 23% more N respectively than did soil from the pure cottonwood stands. In the upper 15 cm of mineral soil, average annual N accretion under the mixed stands and the pure alder stands was estimated as 35 kg and 80 kg/ha respectively.
- Research Organization:
- Forestry Sciences Lab, Pacific Northwest Forest and Range Experiment Station, USDA Forest Service, Washington 98502, USA
- OSTI ID:
- 6741990
- Journal Information:
- Bot. Gaz. (Chicago); (United States), Journal Name: Bot. Gaz. (Chicago); (United States) Vol. 140; ISSN BOGAA
- Country of Publication:
- United States
- Language:
- English
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