Ntawm Lub Nroog Heat Island, Zippy Red Oaks
Los ntawm DOUGLAS M. MAIN
New York Times, Plaub Hlis Ntuj 25, 2012
Red oak seedlings nyob rau hauv Central Park loj hlob mus txog yim lub sij hawm sai dua li lawv cov kwv tij txheeb ze cog rau sab nraum lub nroog, tej zaum vim lub nroog "kub kob" nyhuv, Columbia University cov kws tshawb fawb tau tshaj tawm.
Cov kws tshawb fawb tau cog cov noob qoob loo ntawm cov ntoo qhib liab nyob rau lub caij nplooj ntoo hlav xyoo 2007 thiab 2008 hauv plaub qhov chaw: nyob rau sab qaum teb Central Park, ze ntawm 105th Street; nyob rau hauv ob thaj av hav zoov nyob rau hauv suburban Hudson Valley; thiab nyob ze lub nroog Ashokan Reservoir hauv Catskill foothills txog 100 mais sab qaum teb ntawm Manhattan. Thaum kawg ntawm txhua lub caij ntuj sov, cov ntoo hauv nroog tau muab tso rau yim npaug ntawm biomass ntau dua li cov uas tau tsa nyob sab nraum nroog, raws li lawv txoj kev tshawb fawb, luam tawm hauv phau ntawv Journal Tree Physiology.
"Cov qoob loo loj hlob ntau dua hauv lub nroog, nrog kev loj hlob zuj zus thaum koj mus deb ntawm lub nroog," said Stephanie Searle, uas yog Columbia University undergraduate thaum kev tshawb fawb pib thiab tam sim no yog biofuels txoj cai tshawb fawb ntawm lub International Council on Clean Transportation nyob rau hauv Washington.
Cov kws tshawb fawb tau xav tias Manhattan qhov sov sov - txog li yim degrees siab dua thaum hmo ntuj tshaj li nyob deb nroog ib puag ncig - tuaj yeem yog qhov laj thawj tseem ceeb rau Central Park oaks 'kev loj hlob sai.
Txawm li cas los xij, qhov kub thiab txias tsuas yog ib qho ntawm qhov sib txawv ntawm cov chaw nyob deb nroog thiab nroog. Txhawm rau cais lub luag haujlwm los ntawm lub ntsuas sov, cov kws tshawb fawb kuj tau tsa cov ntoo qhib rau hauv qhov chaw sim qhov chaw uas txhua yam xwm txheej tau zoo ib yam, tshwj tsis yog qhov kub thiab txias, uas tau hloov pauv mus rau cov xwm txheej los ntawm ntau qhov chaw sib txawv. Muaj tseeb tiag, lawv tau pom qhov kev loj hlob sai dua rau cov ntoo qhib hauv cov huab cua kub, zoo ib yam li cov pom hauv thaj teb, Dr. Searle tau hais.
Lub npe hu ua lub nroog tshav kub kob tshwm sim feem ntau tau tham txog qhov muaj feem cuam tshuam tsis zoo. Tab sis txoj kev tshawb fawb qhia tias nws tuaj yeem ua rau muaj txiaj ntsig zoo rau qee hom. "Qee yam kab mob yuav vam meej nyob rau hauv nroog," lwm tus sau, Kevin Griffin, tus kws kho mob ntoo ntawm Lamont-Doherty Earth Observatory ntawm Columbia, tau hais hauv nqe lus.
Cov txiaj ntsig parallel cov ntawm a 2003 kawm hauv Nature uas pom muaj kev loj hlob ntau dua ntawm cov ntoo poplar tsa hauv lub nroog dua li ntawm cov loj hlob nyob rau hauv ib puag ncig lub teb chaws. Tab sis txoj kev tshawb fawb tam sim no mus deb dua los ntawm kev cais tawm ntawm qhov kub thiab txias, Dr. Searle tau hais.
Red oaks thiab lawv cov txheeb ze yeej muaj ntau lub hav zoov ntawm Virginia mus rau yav qab teb New England. Cov kev paub ntawm Central Park cov ntoo qhib liab tuaj yeem ua pov thawj rau qhov yuav tshwm sim hauv hav zoov lwm qhov raws li qhov kub thiab txias nce ntau xyoo los nrog kev hloov pauv huab cua, cov kws tshawb fawb tau hais.