Contact ATP
Phone: +852 2669 5126
Fax: +852 2669 5127
Mailing Address:
26A Siu Hang San Tsuen
Fanling, NT
Hong Kong
Arboriculture Glossary of Terms
There are 1070 entries in this glossary.
All |
#
|
A
|
B
|
C
|
D
|
E
|
F
|
G
|
H
|
I
|
J
|
K
|
L
|
M
|
N
|
O
|
P
|
Q
| R |
S
|
T
|
U
|
V
|
W
|
X
|
Y
|
Z
R
| Term | Definition |
|---|---|
| radial aeration |
see radial trenching.
|
| radial shake |
see frost crack.
|
| radial transport |
lateral movement of substances, perpendicular to the longitudinal axis of the tree or stem.
|
| radial trenching |
technique for aerating the soil around a tree by removing and replacing soil (which may be amended) in trenches made in a spokelike pattern (radially from the trunk) in the root zone to improve conditions for root growth. Contrast with horizontal boring, trenching, and tunneling.
|
| raising |
selective pruning to provide vertical clearance. See crown raising.
|
| ratcheting bollard |
bollard-type lowering device equipped with a mechanism for lifting loads.
|
| ray |
parenchyma tissues that extend radially across the xylem and phloem of a tree and function in transport, storage, structural strength, and defense.
|
| reaction force |
force of equal magnitude exerted in the opposite direction of a force acting on a body.
|
| reaction wood |
wood formed in leaning or crooked stems or on lower or upper sides of branches as a means of counteracting the effects of gravity. See compression wood and tension wood.
|
| reaction zone |
natural boundary formed chemically within a tree to separate damaged wood from existing healthy wood. Important in the process of compartmentalization. Contrast with barrier zone.
|
| reactive force |
force generated in response and opposite to another force. Often demonstrated when operating a chain saw.
|
| redirect |
(1) (verb) changing the path of a climbing or rigging line to modify the forces on, or the direction of, the line. (2) (noun) a system installed to change the path of a climbing or rigging line.
|
| reduction |
pruning to decrease height and/or spread of a branch or crown. See drop-crotch pruning.
|
| reduction cut |
pruning cut that reduces the length of a branch or stem back to a lateral branch large enough to assume apical dominance.
|
| reiteration |
an asexual reproductive strategy of trees such as aspen (Populus spp.) and willow (Salix spp.), which produce new trees or groups of trees by root suckering. See sucker.
|
| reliability-centered management (RCM) |
scheduling of preventive maintenance (including utility arboriculture and Integrated Vegetation Management) to maximize electric service reliability and cost efficiency.
|
| removal cut |
cut that removes a branch at its point of origin. Collar cut.
|
| replacement cost method (RCM) |
method to appraise the monetary value of trees considered replaceable with nursery or field-grown stock. Based on the cost of replacement with the same or a comparable species of the same size and in the same place, subject to depreciation for various factors. Contrast with trunk formula method.
|
| rescue kit |
climbing gear and emergency equipment that should be set out on every job site and available to conduct an aerial rescue and apply first aid.
|
| rescue pulley |
light-duty pulley used in light rigging operations.
|
Glossary 2.5 is technology by Guru PHP