\n<\/p>\n
ABD\u2019nin Pensilvanya eyaletinden bilim insanlar\u0131, k\u00fcresel bir sava\u015f\u0131n ard\u0131ndan ya\u015fanabilecek n\u00fckleer k\u0131\u015f senaryosunun detaylar\u0131n\u0131 ortaya koydu.<\/p>\n
Yeni ara\u015ft\u0131rmaya g\u00f6re, bu felaket senaryosu, tar\u0131msal \u00fcretimin \u00e7\u00f6kmesi nedeniyle milyarlarca insan\u0131n a\u00e7l\u0131ktan \u00f6lmesine yol a\u00e7abilir ve etkileri sekiz y\u0131la kadar s\u00fcrebilir.<\/p>\n
MISIR YET\u0130\u015eMEYECEK<\/strong><\/p>\n D\u00fcnyan\u0131n en \u00f6nemli tar\u0131m \u00fcr\u00fcn\u00fc olan m\u0131s\u0131r, yeterli \u0131s\u0131 ve g\u00fcne\u015f \u0131\u015f\u0131\u011f\u0131na ula\u015famayaca\u011f\u0131 i\u00e7in yeti\u015femeyecek. Bu durum, patlamalardan sa\u011f kurtulanlar\u0131n yayg\u0131n k\u0131tl\u0131k ve g\u0131da krizleri ile kar\u015f\u0131 kar\u015f\u0131ya kalmas\u0131na neden olacak.<\/p>\n N\u00fckleer silahlar\u0131n patlama, \u0131s\u0131 ve radyasyonun yan\u0131 s\u0131ra yang\u0131nlardan y\u00fckselen duman, G\u00fcne\u015f \u0131\u015f\u0131\u011f\u0131n\u0131 engelleyerek karanl\u0131k, dondurucu so\u011fuk, \u00fcr\u00fcn kayb\u0131 ve kitlesel \u00f6l\u00fcmlerle sonu\u00e7lanacak bir n\u00fckleer k\u0131\u015f\u0131 tetikliyor.<\/p>\n Pensilvanya Eyalet \u00dcniversitesi\u2019nden bitki bilimci Yuning Shi, \u201cHayatta kalmak istiyorsak, d\u00fc\u015f\u00fcn\u00fclemeyecek sonu\u00e7lara bile haz\u0131rl\u0131kl\u0131 olmal\u0131y\u0131z\u201d dedi.<\/p>\n Ara\u015ft\u0131rma, m\u0131s\u0131r \u00fcretiminin n\u00fckleer sava\u015f\u0131n \u00f6l\u00e7e\u011fine ba\u011fl\u0131 olarak \u00e7arp\u0131c\u0131 bi\u00e7imde d\u00fc\u015fece\u011fini g\u00f6steriyor. B\u00f6lgesel bir sava\u015fta atmosfere 5,5 milyon ton kurum yay\u0131lmas\u0131, k\u00fcresel m\u0131s\u0131r \u00fcretimini y\u00fczde 7 azaltabilir. K\u00fcresel \u00e7apta b\u00fcy\u00fck bir sava\u015fta \u015fse 165 milyon ton kurum, \u00fcretimi y\u00fczde 80 oran\u0131nda d\u00fc\u015f\u00fcrebilir.<\/p>\n B\u00f6ylesi bir d\u00fc\u015f\u00fc\u015f, yaln\u0131zca m\u0131s\u0131rda de\u011fil, pirin\u00e7 ve bu\u011fday gibi di\u011fer temel g\u0131dalarda da benzer kay\u0131plara yol a\u00e7acak.<\/p>\n Ara\u015ft\u0131rmac\u0131lar, y\u00fczde 7\u2019lik bir \u00fcretim kayb\u0131n\u0131n bile g\u0131da g\u00fcvenli\u011fini sarsaca\u011f\u0131n\u0131, y\u00fczde 80\u2019lik kayb\u0131n ise k\u00fcresel \u00e7apta k\u0131tl\u0131k ve a\u00e7l\u0131k felaketi yarataca\u011f\u0131n\u0131 vurguluyor. Bu s\u00fcre\u00e7te insanlar kendi arazilerinde veya k\u00fc\u00e7\u00fck yerel bah\u00e7elerde \u00fcr\u00fcn yeti\u015ftirmek zorunda kalabilir, ancak tohum ve fide temini bile ciddi sorun haline gelebilir.<\/p>\n OZON TABAKASI YOK OLACAK<\/strong><\/p>\n Ayr\u0131ca, b\u00fcy\u00fck \u00f6l\u00e7ekli bir sava\u015fta atmosfere yay\u0131lan 165 milyon ton kurum, d\u00fcnyay\u0131 zararl\u0131 ultraviyole \u0131\u015f\u0131nlardan koruyan ozon tabakas\u0131n\u0131 yok edecek. Bu durum, bitki dokular\u0131na zarar vererek tar\u0131msal \u00fcretimi daha da d\u00fc\u015f\u00fcrecek.<\/p>\n Ara\u015ft\u0131rma, hakemli bilimsel dergi Environmental Research Letters’ta yay\u0131nland\u0131 ve \u015fu uyar\u0131yla noktaland\u0131:<\/p>\n \u201cN\u00fckleer sava\u015flar, yaln\u0131zca b\u00fcy\u00fck can kayb\u0131na yol a\u00e7makla kalmaz; y\u0131llarca s\u00fcrecek bir n\u00fckleer k\u0131\u015f, tar\u0131m alanlar\u0131n\u0131 ve \u00fcretimi yok eder. \u0130klim toparlansa bile y\u00fcksek ultraviyole \u0131\u015f\u0131nlar, y\u0131llar sonra bile mahsullere zarar vermeye devam edebilir.\u201d<\/p>\n<\/div>\n