arboles y huracánes - university of floridasfyl.ifas.ufl.edu › ... › hurricane-and-disaster ›...
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Arboles y Arboles y HuracHuracáánesnes
Henry MayerMiami-Dade Extension
July 2, 2009http://miami-dade.ifas.ufl.edu
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Un bosque urbano saludablepromueve:
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Bosque Bosque UrbanoUrbano 20072007--20082008
Los BosquesUrbanos son diferentes y cambiam!!
*http://www.nrs.fs.fed.us/data/urban/state/?state=FL
Recommendacion :Establezca y maneje un buen programamediante:
� Having a comprehensive
tree management plan
� Having a structural pruning program
for young and mature trees
� Choosing more wind
resistance species
� Selecting the right species
� Designing the right place
� Planting high-quality trees
• Urban forest conditions such as overall tree canopy and composition
Pérdida de árboles depende de:
• Tree species, age, health, and structure
• Conditions during the hurricane such as precipitation and the time to move through an area
• Site characteristics such as soil conditions (for example soil depth and moisture)
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http://treesandhurricanes.ifas.ufl.edu
Lista de árboles resistentes a los vientos
Especies que resisten la podredumbre:
Laurel oakRoyal poinciana
FicusOrchid tree
Live oakMahogany
Gumbo-limboTamarind
Trees prone to decayTrees that resist decay
A mayor velocidad del viento más árboles se caerán
0
5
10
15
20
25
30
35
40
75 95 115 135 155 175
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R2 polyn=0.7154
y = 0.0032x2 - 0.4948x + 30.57
0
10
20
30
40
50
60
Jeanne Ivan Charley120 mph 130 mph 145 mph
Bra
nche
s Lo
st (%
)
0000
0000
0000
0 - 8 in.
9 - 20 in.
21 - 39 in.
40 - 79 in. The larger and older a tree is,
the more branches it will lose.
Arboles viejos se caen y quiebran más!
Arboles bien podadossobreviven más!
Live Oak Black Olive Gumbo Limbo0
20
40
60
80
100
1 �����
����
Tree
s S
tand
ing
Aft
er H
urri
cane
(%)
Case Study: Weston Lakes Maintenance Association, Weston, FL
Structural Pruning of 100 Common Area and 700 Swale Mahogany Trees
64%survival
0 to 3 m2
(0 to 39 ft2)
Street trees,Parking lots, Yards
73%survival
91%survival
Yards,Parks
4 to 7 m2
(40 to 75 ft2)> 7 m2
(> 75 ft2#
Campuses, Parks, Yards
Los árboles necesitanespacio para las raíces!
� Give small trees
at least 10’ by 10’
� Give medium
treesat least 20’ by 20’
� Give large trees at least 30’ by 30’
Recommendation:
Give trees enough rooting space according to their mature size
1.Arbol se sale del hoyo
3.Tronco principal partido
2.Ramas quebradas
6.Perdida de hojas
5.Sin dañoaparente
4.Arbol 4.Arbol inclinadoinclinado
Plan de RespuestaImmediately following stormStep 1: Remove hazards
Step 2: Stake fallen trees where possible
Step 3: Clean canopies of damaged trees
Before the next visit• Allow trees to regenerate energy reserves
• Develop a tree management program in the community
RECOMMENDATION: If a large tree uproots and falls over, it is basically dead and should be removed.
ArbolArbol salidosalido del del hoyohoyo
A small tree (under 4 inches in diameter) may be righted. Its future care needs to include staking and
watering as though it was freshly planted.
UprootUproot
Resiembra• Water as if the tree were
recently planted. Irrigate 3x a week with 3 gallons/inch trunk diameter. There is no
need to fertilize at this time.•Stake the tree. Adjust stakes and remove when tree is stable.
TroncoTronco principal principal partidopartido
� is essentially dead as an urban tree� should be removed
Muchas ramaspartidas
� Large broken branches may be able to be repaired through pruning. � Small branches can be pruned.� If a tree has lost more than ½ its crown, it may never regain its structure and health
Limpieza de la copa
Haga cortes lisos en los tocones y ramas.
Reduce back to lateral branch if one is present.
Cola de leónLions-tailing:trees with foliage concentrated at the tips of branches because inner branches were removed.• More susceptible to hurricane damage• Difficult to restore
Programa de Poda
Time needed
to restore:
• 4 + yrs.• four or more visits
• 3 – 4 yrs.• about threevisits
• 2 – 3 yrs. • about two visits
Mature (over 10” dbh)
Medium-aged (5-10”
dbh)
Young (under 5” dbh)
* dbh – diameter at breast height
Reduzca algunos- Shorten 1/3 of the sprouts. They will continue to store energy, but will eventually be removed.
Remueva algunos- Remove 1/3 of the sprouts to allow space for the most vigorous ones to grow.
Deje algunos- These will develop into the new branches.
Pines may show no immediate visible damage after a hurricane but may decline over time
SIN dañosvisibles
Contract specification requirements: All trees FL grade No. 1 or better; UF-IFAS planting detail; post-plant inspection;
SIEMBRA