Influence of Seed Source and Stock Size on First-Year Performance of Direct Transplanted Conifer Seedlings.

摘要

The ability of an organism to survive and grow in an environment is partly controlled by the organisms genotype. The influence of genotype on seedling survival and the large amount of genetic variability within forest tree species has, in part, led the U.S.D.A.-Forest Service, in cooperation with many state forest agencies, to develop seed zones. Seed zone delineation is an attempt to prevent using seedlings from unfit or nonadapted seed sources on a planting project. A current approach in reforestation involves matching planting stock type to site conditions and developing a planting stock with attributes best suited to the site. This system is often referred to as a target seedling system. One target parameter often used is the overall seedling size. The influence of seedling size on reforestation and afforestation success has been well documented. The objectives of this study were to examine the influence of seed source or genotype, and stock size on transplant success of seedlings transplanted directly into overburden piles at the Molycorp Mine in northern New Mexico.