Contact ATP
Phone: 2669 5126
Fax: 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
H
| Term | Definition |
|---|---|
| half hitch |
simple knot used to temporarily attach a line to an object. Also used as a backup in combination with other knots.
|
| hanger |
broken or cut branch that is hanging in a tree.
|
| hardened off |
plant tissue that is acclimated to the cold or a new environment.
|
| hardiness |
genetically determined ability of a plant to survive low temperatures.
|
| hardpan |
compacted soil layer nearly impervious to water, air, and roots.
|
| hazard |
situation, condition, or thing that may be dangerous. (1) in tree management, a tree or tree part that is likely to fail and cause damage or injury, and the likelihood exceeds an acceptable level of risk. (2) in tree care or forestry operations, the presence of a condition or situation that may cause harm or injury to workers.
|
| hazard assessment |
systematic process of identifying hazards. See risk assessment.
|
| heading (heading back) |
cutting a shoot back to a bud or cutting branches back to buds, stubs, or lateral branches not large enough to assume apical dominance. Cutting an older branch or stem back to a stub in order to meet a structural objective.
|
| heart rot |
any of several types of fungal decay of tree heartwood, often beginning with infected wounds in the living portions of wood tissue.
|
| heartwood |
wood that is altered (inward) from sapwood and provides chemical defense against decay-causing organisms and continues to provide structural strength to the trunk. Trees may or may not have heartwood. Contrast with sapwood.
|
| heat tolerance |
ability of a plant to endure high temperatures.
|
| herbicides |
chemical compounds that kill vegetation.
|
| high-voltage lines |
lines with voltages greater than a specified amount, typically in excess of 60,000 volts, depending on the utility.
|
| hinge |
strip of uncut wood fibers created between the face cut or notch and the back cut that helps control direction in tree felling or limb removal. Holding wood.
|
| hinge cut |
sequence of cuts used to control the direction of a limb being removed.
|
| hitch |
(1) type of knot made when a rope is secured around an object or its own standing part. Contrast with bend. (2) a mechanical device for connecting a towing vehicle to a trailed or towed vehicle or implement.
|
| holding wood |
section of wood located between the face cut and the back cut that helps direct where the tree will fall. See hinge.
|
| hollow braid |
rope construction consisting of a braided rope with no core.
|
| honeydew |
sugary substance secreted by certain insects, including aphids and some scale insects, when feeding on plants.
|
| horizon |
layer of soil within the soil profile.
|
Glossary 2.5 is technology by Guru PHP