Productivity of European black alder (Alnus glutinosa) interplanted with black walnut (Juglans nigra) in illinois,U.S.A. |
| |
| Authors: | Email author" target="_blank">James?R?BohanekEmail author John?W?Groninger |
| |
| Institution: | (1) Department of Forestry-4411, Southern Illinois University, Carbondale, 62901-4411, IL |
| |
| Abstract: | Fast-growing woody nurse crops planted among high value hardwoods can produce merchantable biomass early in the life of the
plantation. On a productive site in south-central Illinois (U.S.A.), experimental interplantings of European black alder (Alnus
glutinosa (L.) Gaertn.) and black walnut (Juglans nigra L.) were established and maintained under a factorial combination
of two initial densities and two thinning regimes. This study evaluated the growth response of the alder component of this
system. Although alder consistently overtopped walnut, alder mortality began to increase dramatically during the seventh growing
season and was nearly complete following the nineteenth growing season. Mean alder cumulative dry mass through year 14 ranged
from 19.05 to 58.62 Mg/ha among initial density and thinning treatments. Carbon sequestered in useable bolewood constituted
approximately 25 of total biomass. The productivity of the interplanted alder was comparable to that of native forests while
constituting only a portion of the stand and without negatively impacting walnut growth or bole quality. These results suggest
that, if marketed, alder has the potential to partially offset costs associated with walnut plantation establishment and maintenance. |
| |
| Keywords: | Carbon Sequestration Competition High Value Hardwood Silviculture Nurse Crops Short Rotation Woody Crops Stand Dynamics Thinning |
| 本文献已被 SpringerLink 等数据库收录！ |
