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- Title
Assisted lodgepole pine regeneration on reclamation sites using logging slash as both a mulch and natural seed source.
- Authors
Cirelli, Damián; Vinge, Tim; Lieffers, Victor J.
- Abstract
In this study, we tested the efficacy of establishing lodgepole pine ( Pinus contorta Dougl.) from seed using woody mulch produced from slashed tree tops from a pine harvesting site; this mulch contained the closed serotinous cones of the lodgepole pine. Mulch was spread on prepared reclamation sites at depths of 0, 1, 3, and 5 cm. Broadcast seeding of pine was also done at mulch depths of 0 and 1 cm. Mulch cover that was 1 cm thick was the preferred treatment, as it produced 17 000 seedlings·ha−1 by the third year after treatment while being similar in seedling density to the 3 and 5 cm treatments. When 50 000 seeds·ha−1 were added, seedling density went up more on the sites with 1 cm of mulch than the sites with no mulch. Soil temperature was lower and temperature extremes were reduced under the mulch layer compared with the control plot. The plots with 1 cm of mulch also had higher soil moisture in the mineral layer than the plots with 0 cm of mulch. A thin layer of woody mulch, therefore, provided a source of pine seed and the covering of the ground provided a more benign environment for the establishment of pine germinants.
- Subjects
LODGEPOLE pine; SEEDS; PLANTS; PINE; LOGGING; FORESTS &; forestry
- Publication
Canadian Journal of Forest Research, 2016, Vol 46, Issue 9, p1132
- ISSN
0045-5067
- Publication type
Article
- DOI
10.1139/cjfr-2016-0157