Iziphumo zesizwe zibonisa ukuba ukugquma kwemithi kwimimandla yasezidolophini yase-United States yehla ngesantya esimalunga nezigidi ezi-4 zemithi ngonyaka, ngokutsho kophononongo lweNkonzo yeHlathi yase-US epapashwe kutshanje kwi-Urban Forestry & Urban Greening.
Ukhuselo lwemithi kwi-17 yezixeko ezingama-20 ezihlalutyiweyo kuphononongo lwehlile ngelixa izixeko ezili-16 zabona ukonyuka koqweqwe olungenamandla, olubandakanya ipavumente kunye nophahla. Umhlaba ophulukene nemithi ubukhulu becala wawuguqulelwa ekubeni yingca okanye umhlaba, uqweqwe olungenamanzi okanye umhlaba ongenanto.
Kwizixeko ezingama-20 ezihlalutyiweyo, eyona pesenti inkulu yelahleko yonyaka kukhuseleko lomthi yenzeka eNew Orleans, eHouston naseAlbuquerque. Abaphandi kulindeleke ukuba bafumane ilahleko enkulu yemithi eNew Orleans kwaye bathi kusenokwenzeka ukuba kungenxa yokutshatyalaliswa kweNkanyamba uKatrina ngo-2005. Ukhuselo lomthi lwalusuka kwindawo ephezulu ye-53.9 yeepesenti e-Atlanta ukuya ngaphantsi kwe-9.6 yeepesenti eDenver ngelixa lilonke. i-infective coverage yahluka ukusuka kuma-61.1 ekhulwini kwisiXeko saseNew York ukuya kwi-17.7 ekhulwini eNashville. Izixeko ezinolwando olukhulu lonyaka kwi-inshorensi enganyangekiyo yayiyiLos Angeles, iHouston neAlbuquerque.
“Amahlathi ethu asezidolophini aphantsi koxinezeleko, yaye kuya kuthabatha ukuba sonke sisebenzisane ukuze siphucule impilo yezi ndawo zibalulekileyo zohlaza,” watsho uTom Tidwell oyiNtloko yeNkonzo yeHlathi yase-US. “Imibutho yasekuhlaleni kunye nabacwangcisi bakamasipala banokusebenzisa i-i-Tree ukuhlalutya ikhuselo lomthi wabo, kwaye bamisele ezona ntlobo zilungileyo kunye neendawo zokutyala kwiindawo abahlala kuzo. Alikafiki ixesha lokubuyisela amahlathi ethu asezidolophini – ixesha ngoku lokuba siyijike le nto.”
Izibonelelo ezifunyenwe kwimithi yasezidolophini zibonelela ngembuyekezo ephindwe kathathu kuneendleko zokhathalelo lomthi, ukuya kuthi ga kwi-2,500 yeedola kwiinkonzo zokusingqongileyo ezifana nokunciphisa iindleko zokufudumeza kunye nokupholisa ngexesha lokuphila komthi.
Abaphandi bamahlathi uDavid Nowak no-Eric Greenfield beSikhululo soPhando saseMntla seNkonzo yeHlathi yaseU.S. basebenzisa umfanekiso wesathelayithi ukuze bafumanise ukuba umthi ugqunywe ngomlinganiselo omalunga ne-0.27 ekhulwini ngonyaka kwizixeko zase-US, nto leyo elingana ne-0.9 ekhulwini yommandla okhoyo. Ukhuseleko lwemithi yasedolophini lulahleka ngonyaka.
Ifoto-itoliko yemifanekiso yedijithali edityanisiweyo ibonelela ngendlela elula, ekhawulezayo kunye nexabiso eliphantsi ukuvavanya utshintsho ngokweenkcukacha-manani phakathi kweentlobo ezahlukeneyo zokhuselo. Ukunceda ekulinganiseni iintlobo zekhava ngaphakathi kwendawo, isixhobo sasimahla, i-Canopy yoMthi, ivumela abasebenzisi ukuba batolike ifoto-isixeko besebenzisa imifanekiso kaGoogle.
"Imithi iyinxalenye ebalulekileyo yendawo yasezidolophini," ngokutsho kukaMichael T. Rains, uMlawuli weSikhululo soPhando saseMntla. “Badlala indima ekuphuculeni umgangatho womoya namanzi kwaye babonelela ngeengenelo ezininzi zokusingqongileyo nezentlalo. Njengoko uMlawuli wethu weNkonzo yeHlathi esitsho, '…imithi yasezidolophini yeyona mithi isebenza nzima eMelika.' Olu phando lusisixhobo esikhulu kwizixeko zabo bonke ubukhulu kwilizwe liphela. ”
UNowak noGreenfield bagqibezele ucazululo olubini, olunye lwezixeko ezingama-20 ezikhethiweyo kunye nelinye lwemimandla yasezidolophini yesizwe, ngokuphonononga umahluko phakathi kweefoto zasemoyeni zamva nje ezinokwenzeka kunye nemifanekiso yokuthandana ngokusondeleyo kangangoko kwiminyaka emihlanu ngaphambi kwaloo mhla. Iindlela bezingqinelana kodwa imihla yemifanekiso kunye neentlobo zahlukile phakathi kohlalutyo olubini.
“Ilahleko yokhuseleko lwemithi inokuba phezulu ukuba bekungengomzamo wokutyalwa kwemithi okwenziwe ziidolophu kule minyaka imbalwa idlulileyo,” ngokuka Nowak. “Amaphulo okutyalwa kwemithi anceda ekwandiseni, okanye ubuncinane ukunciphisa ilahleko, ukugquma kwemithi yasezidolophini, kodwa ukubuyisela umva le meko kunokufuna iinkqubo ezibanzi, ezibanzi nezihlangeneyo ezigxile ekuzinziseni isigqubuthelo somthi ngokubanzi.”