City Trees

November/December 2014

City Trees is a premier publication focused on urban + community forestry. In each issue, you’ll learn how to best manage the trees in your community and more!

Issue link: http://read.dmtmag.com/i/417159

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ÌÞÊ/Àiià 3 0 6 / % 5 " # - & $MJNBUF$IBOHF*NQBDUTPO6SCBO'PSFTUSZ 4 HE #ITY OF 3URREY "RITISH #OLUMBIA IS SITUATED IN THE TEMPERATE RAINFOREST OF THE 0ACIFIC .ORTHWEST COAST 3URREYS CLIMATE IS GENERALLY CHARACTERIZED BY WARM WET WINTERS /CTOBER TO -AY WITH AVERAGE HIGH TEMPERATURES OF # OR & AND RELATIVELY HOT DRY SUMMERS *UNE TO 3EPTEMBER WITH AVERAGE HIGH TEMPERATURES OF # OR & !NNUAL AVERAGE PRECIPITATION IN 3URREY IS MM OR INCHES 7HILE THIS SOUNDS LIKE A SIGNIFI CANT AMOUNT OF MOISTURE OF THIS PRECIPITATION FALLS BETWEEN /CTOBER AND -AY "ETWEEN THE MONTHS OF *UNE AND 3EPTEMBER ON AVERAGE 3URREY RECEIVES JUST MM OR INCHES OF RAIN !S THE ABOVE INDICATES TREES PLANTED IN 3URREY NEED TO THRIVE IN WARM WET WINTERS AND HOT DRY SUMMERS 3OME SPECIES THAT WERE OFTEN PLANTED IN THE PAST SUCH AS -ALUS @&LORIBUNDA AND @2UDOLPH 0YRUS CALLERYANA @#HANTICLEER AND 3YRINGA RETICULATA @)VORY 3ILK HAVE SUFFERED FROM THESE CONDITIONS AND HAVE BEEN SUBJECT TO LARGE SCALE REMOVAL AND REPLACEMENT PROJECTS )N RECENT YEARS DESPITE NOTED INCREASES IN THE INTENSITY AND LENGTH OF THE SUMMER DROUGHT PERIOD TREE SPECIES THAT HAVE PROVEN TO PERFORM WELL IN 3URREY INCLUDE 3EQUOIADENDRON GIGANTEUM 1UERCUS COCCINEA 0INUS NIGRA @3ELECT 'REEN !CER X FREEMANII AND #ARPINUS BETULUS 3URREY CURRENTLY PLANTS APPROXIMATELY NEW SHADE TREES EVERY YEAR ALONG ITS STREETS AND IN ITS PARKS )N ORDER TO MAXIMIZE SURVIVAL OF THIS SIGNIFICANT GREEN INFRASTRUCTURE INVESTMENT A COM PREHENSIVE WATERING PROGRAM IS CARRIED OUT )N APPROXIMATELY TREES RECEIVED SUPPLEMENTAL WATERING DEPENDING ON THE SEVERITY OF DROUGHT CONDITIONS 4HE NUMBER OF WEEKS WATERED AND THE AGES OF TREES WATERED ARE STRONG INDICATORS OF THE SEVERITY OF DROUGHT EXPERIENCED IN 3URREY OVER THE LAST NUMBER OF YEARS 4HE h9EAR -OVING !VERAGEv CHART ILLUSTRATES THE TREND OF THE INCREASING NUMBER OF WEEKS WATERED BETWEEN AND &OR ALL AGE CATEGORIES EXCEPT YEAROLD TREES THE NUMBER OF WEEKS WATERED ON A YEAR MOVING AVERAGE BASIS HAS INCREASED 4HIS ROUNDTABLE ASKS h(OW HAS YOUR REGIONAL WEATHER BEEN TRENDING OVER THE LAST FIVE TO TEN YEARS AND HOW HAS THIS AFFECTED THE TREE SPECIES YOU SELECT AND THE WAY YOU MANAGE YOUR URBAN FORESTv !LSO THERE IS AN ENTRY THAT LOOKS AT THE NORTHERN MOVEMENT OF MANGROVE SWAMPS IN &LORIDA AND ANOTHER THAT REVIEWS THE POSSIBLE EFFECTS OF CLIMATE CHANGE ON URBAN TREES IN .EW %NGLAND ÀÃÌÀ}Ê>«iÃÊViÀÊÝÊvÀii>®Ê>ÛiÊi`ÕÀi`Ê`ÀÕ}ÌÊÜiÊÊ-ÕÀÀiÞ]Ê °Ê*ÌÊ ÕÀÌiÃÞÊ ÌÞÊvÊ-ÕÀÀiÞ]Ê1ÀL>ÊÀiÃÌÀÞÊ>`Ê ÛÀiÌ>Ê*À}À>Ã

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