Zotsatira za dziko zimasonyeza kuti mitengo yamtengo wapatali m'matauni a United States ikutsika pamtunda wa mitengo pafupifupi 4 miliyoni pachaka, malinga ndi kafukufuku wa US Forest Service wofalitsidwa posachedwapa mu Urban Forestry & Urban Greening.
Kuphimba kwamitengo m'mizinda 17 mwa 20 yomwe idawunikidwa mu kafukufukuyu idatsika pomwe mizinda 16 idawona kuwonjezeka kwa chivundikiro chosasunthika, chomwe chimaphatikizapo misewu ndi madenga. Malo omwe mitengo inatayika nthawi zambiri inkasandulika kukhala udzu kapena nthaka, yotchinga kapena nthaka yopanda kanthu.
Mwa mizinda 20 yomwe yawunikidwa, kuchuluka kwakukulu kwa kuwonongeka kwamitengo pachaka kunachitika ku New Orleans, Houston ndi Albuquerque. Ofufuza ankayembekezera kupeza kutayika kwakukulu kwa mitengo ku New Orleans ndipo adanena kuti mwina chifukwa cha chiwonongeko cha mphepo yamkuntho Katrina mu 2005. Kuphimba mitengo kunachokera kumtunda wa 53.9 peresenti ku Atlanta kufika ku 9.6 peresenti ku Denver pamene chivundikiro chonse chosasunthika chinasiyana ndi 61.1 peresenti ku Naville 17.7 peresenti ku New York City mpaka ku New York City Mizinda yomwe inali ndi chiwonjezeko chachikulu pachaka cha chivundikiro chosasunthika chinali Los Angeles, Houston ndi Albuquerque.
Tom Tidwell, yemwe ndi mkulu wa nkhalango za ku United States, anati: “Nkhalango zathu za m’matauni zili pamavuto, ndipo zidzatengera tonsefe kugwirira ntchito limodzi kuti malo obiriwirawa akhale abwino. "Mabungwe ammudzi ndi okonza ma tauni atha kugwiritsa ntchito i-Tree kusanthula mitengo yawoyawo, ndikuzindikira mitundu yabwino kwambiri komanso malo obzala m'malo oyandikana nawo. Sitinachedwe kukonzanso nkhalango zathu zakutawuni - nthawi yakwana yoti tisinthe izi. "
Phindu lochokera kumitengo yakumatauni limapereka kubweza kuwirikiza katatu kuposa mtengo wosamalira mitengo, mpaka $2,500 pantchito zachilengedwe monga kutsika kwamitengo yotenthetsera ndi kuziziritsa panthawi yonse ya moyo wa mtengo.
Ofufuza za nkhalango David Nowak ndi Eric Greenfield a ku US Forest Service's Northern Research Station anagwiritsa ntchito zithunzi za satelayiti kuti apeze kuti mitengo yophimba mitengo ikucheperachepera pafupifupi 0.27 peresenti ya malo a nthaka pachaka m'mizinda ya ku US, zomwe ndi zofanana ndi pafupifupi 0.9 peresenti ya mitengo yomwe ilipo kale imatayika chaka chilichonse.
Kutanthauzira zithunzi za zithunzi zophatikizika za digito kumapereka njira yosavuta, yachangu komanso yotsika mtengo yowunikira kusintha kwamitundu yosiyanasiyana yachikuto. Kuthandizira kuwerengera mitundu yakuvundikira m'dera, chida chaulere, i-Tree Canopy, imalola ogwiritsa ntchito kutanthauzira zithunzi za mzinda pogwiritsa ntchito zithunzi za Google.
"Mitengo ndi gawo lofunika kwambiri la mizinda," malinga ndi Michael T. Rains, Mtsogoleri wa Northern Research Station. Amathandizira kuti mpweya ndi madzi ukhale wabwino ndipo amapereka zabwino zambiri zachilengedwe komanso chikhalidwe. Monga mkulu wathu wa Forest Service akunenera, '…mitengo ya mtawuni ndi mitengo yomwe ikugwira ntchito movutikira kwambiri ku America.' Kafukufukuyu ndi wothandiza kwambiri m’mizinda yamitundu yonse m’dziko lonselo.”
Nowak ndi Greenfield anamaliza kusanthula kuwiri, umodzi wa mizinda 20 yosankhidwa ndi ina ya madera akumidzi, poyesa kusiyana pakati pa zithunzi zaposachedwa kwambiri zapamlengalenga za digito zomwe zingatheke ndi zithunzi zokhala pafupi kwambiri ndi zaka zisanu zisanafike tsikulo. Njira zinali zofananira koma masiku azithunzi ndi mitundu yosiyana pakati pa kusanthula kuwiriko.
"Kuwonongeka kwa mitengo kukanakhala kwakukulu ngati sikunali chifukwa cha ntchito zobzala mitengo zomwe mizinda yachita zaka zingapo zapitazi," akutero Nowak. "Ntchito zobzala mitengo zikuthandizira kuchulukitsa, kapena kuchepetsa kutayika kwa mitengo ya m'tawuni, koma kubwezeretsa mchitidwewu kungafunike kufalikira, kokwanira komanso kophatikizana komwe kumayang'ana kwambiri kusungitsa mitengo yonse."