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O NGHlfeN ctfu TRAO P(5l ;UA BIEN D O I KHI HAU ^EN STJC KH6E CONG D6NG NHBNG GIAI P H A P tUG PHO Bi ln ddi khi hau la gi? Bi ln ddi khi hdu Trdi O l t la sy thay ddi cua he thong khi hfiu gdm khi qu[.]
O NGHlfeN ctfu - TRAO P(5l ;UA BIEN D O I KHI HAU ^EN STJC KH6E CONG D6NG NHBNG GIAI P H A P tUG PHO B i l n ddi hau la gi? Biln ddi hdu Trdi O l t la sy thay ddi cua he thong hfiu gdm quyen, thuy quyen, sinh quyln, thgch quyln hifin tgi vd tUdng lgi bdi cdc nguyen nhan tu nhien vd nhdn tao mflt giai dogn nhlt dinh tQ tinh bang thap ky hay hang trifiu nam Sy bien ddi cfl t h l la thay ddi thfli tilt binh quan hay thay ddi sU phan bd cdc sU kign thfli t i l t quanh mflt mQc tmng binh Sy bien ddi hgu cd t h l gidi han mgt vung nhat dinh hay cfl the xuat hifin tren toan Oja Cau Trong nhQng nam gan day, ddc biet ngO d n h chinh sdch mfli truflng, bien ddi hau thudng de cfip tdi su thay ddi hdu hifin nay, dudc goi Chung bang hifin tuflng ndng Ifin toan cau Nguyen nhan chinh lam bien ddi hau trdi dat la sy gia tdng d o hogt dflng tao cdc chat thai nha kinh (hifiu Qng nha kinh), d c hogt dflng khai thac qua mQc cdc b l hap thu va b l chQa nhd kinh nhQ sinh khdi, rtlng, cdc hg sinh thai biln, ven bfl va dat lien khdc Nguyen nhdn cda bien ddl hfiu Khi nhi kinh va hieu dng nha kinh Nguyfin nhdn cda sy bien ddi hfiu (BOKH) hign nay, tifiu bilu la sy ndng len todn d u da duqc khing djnh la chd y l u hogt dflng eda ngUOi Nguyen nhan ctia nudc bien d&ng Nudc biln ddng Id sy dang muc nudc cua dgi dUdng trfin todn cau, dfl khflng bao gfim trilu, nude dang bao Nudc biln ddng tai mflt vj tn nao dd cd t h l -t DS MAI THANH HUNG PGD S3 Y tg Vinh Long cao hdn hofic thip hdn so vdi trung blnh todn cau vl cd sy khac ve nhigt dfl cOa dgi duong va cdc yeu td khdc Myc nudc biln dupc thfing qua hg thdng thiet bi trieu ky ddt tai cdc tram hdi vdn hoac cdc mdy dfl cao ve tinh Trong thdnh phan cda quyln trdi d i t , nitd chiem 78% khdi lupng, oxy chiem % , iai khodng % cdc khac nhu argon, dioxit cacbon, metan, oxit nitd, nfion, heli, hydrfl, ozon, vd hdi nudc Tuy chl chilm mgt ty 16 r l t nhd, cdc vet nay, dac bifit la C02, CH4, NOx, va CFGs - mflt logi mfli chl cd quyln tU cflng nghfi lam ignh phdt triln Id nhflng cfl vai trfl rat quan trgng doi vdi sy sdng tren trdi dat Tmde hit, dfl la vl cdc chat nfli tren hap thu bQc xa hdng ngogi mat dat phdt ra, sau dfl, mflt phan IUflng bQc xa lai dQdc cdc chat dd phat xa trd lai mat dat, qua dd han chfi lupng bQc xg hfing ngoai cda mfit dat thoat ngofii khodng khong vu try vd gifl cho mfit d i t khdi bj lanh di qud nhilu, nhat Id v l ban dgm khflng d bQc xg mdt trdi chieu tdi mat dit Cdc chit nfli trfin (trQ CFCs), da tdn tgi tu Idu quyln vd dUdc gpi Id cdc nhd kinh ty nhifin Neu khflng efl cdc chat nhd kinh ty nhifin, trdi d i t cda chiing ta se lanh hdn, tdc la nhigt dfl trung blnh trdi d i t se khodng 18°C (hign khodng 33°C) Higu Qng giO cho b l mdt trdi n THONG TIN KHOA HOC VA CONG NGHE V J N H S E O N G E S O NGHlftN cffu - TRAO B6I *dSt I m hdn so vdi truflng hop khflng cd cdc nhd kinh dUfle gpi Id "Hifiu Qng nhd kinh" Ngodi ra, flzfln tfip trung thdnh mflt Iflp mflng trfin tdng blnh luu cda quyln cfl tdc dyng h i p thy cde bQc xg tQ ngogi tQ mfit trdi chilu tdi trdi d i t vd thflng qug dd bdo vfi sy sdng trfin trdi d i t NhQng tdc dflng trUc t i l p tdi sQc khde Khi hfiu biln ddi d iifin qugn tryc tilp vd gidn tilp d i n dfli sfing vd sQc khde cflng ddng d mpi qudc gia, dfic bifit Id, fihflng ngudi nghfip sinh sdng d nhflng vung d l bj tdc dflng cda bifin ddi hfiu gdy (sdng thin vung ven biln, d c bfinh tmyln nhilm d vung nhigt ddi ) Tdc dflng tryc tiep cda biln ddi hfiu d i n sdc khde ngQdi thflng qua mfli quan hg trao ddi vat chdt, ndng IUdng glQa cd t h l nggfli vfli mfli tmflng xung quanh, dan dfin nhQng bien ddi ve sinh ly, tap qudn, khd ndng thich nghi vd nhflng phdn Qng cua cd t h l ddi vdi d c tdc dflng dd Cdc ddt ndng ndng keo ddi, nhigt dfl khflng tfing, gfiy nfin nhQng tde dflng tifiu cue ddi vdi sQc khde ngUdi, d i n den gia tdng mflt sd nguy cd ddi vfli tudi gia, nhflng ngQdi mdc bgnh tim mgch, bgnh t h i n kinh, di flng Tac dflng gidn tilp cda biln ddi hfiu den sQc khde ngUdi thflng qua nhflng ngudn gdy bfinh, Idm tdng khd ndng biing phdt vd lan truyin d c bfinh djch nhu benh cum /VH1N1, cdm A/H5N1, tifiu chdy, djch td Biln ddi hfiu lam tfing khd ndng xdy mflt sd bfinh nhifit ddi nhu sdt rfit, sdt x u l t huylt, vifim ndo Nhfit Bdn, Idm tdng tdc dfi sinh trudng vd phdt triln nhilu logi vi khuln vd cfin trdng, vgt chd mang bfinh (mdi, mudi, ehuflt, bg chfit, ve) Biln ddi hfiu Id mflt nhQng nguyfin nhdn dan d i n sy x u l t hifin trd Igi cda mflt sfl bfinh truyin nhiem d vung nhigt m ddi (sdt rfit, sdt Dengue, dieh hach, djch td), x u l t hifin mflt sd bfinh truyin nhilm mdi (SAi^S, edm A/H5N1, cdm A/H1N1), thde d l y qud trinh dflt biln eda virut gfiy bfinh cum A/HI N l , H5N1 nhanh hdn Cdc hogt dflng eda ngufli da gdy biln ddi hfi sinh thdi ed d trfin cgn vd dudi nudo, sdn b i n trdi phfip Idm gidm ddng k l , thfim chi gfiy digt vong mflt sd lodi thu hifim, phdt thdl nhd kinh ngdy d n g tdng Id nguygn nhdn chd y l u cug xu t h l dm ifin todn c l u , tdng ozon bj phd hdy din dfin sy tfing cuflng dfl bQc xa td ngogi trfin mfit ddt, Id nguyfin nhdn gdy bfinh ung thu da vd cdc bgnh v l m i t Gldi phdp Nhdm chd dflng phflng chdng thifin tai, thdm hpa, djch bfinh biln ddi hdu gfiy nfin, d n cd sy hpp tdc chfit che cua cdc nudc trfin the gidi trpng vigc bdo v? mfli tmdng - ngfli nhd chung cda d u n g ta Chinh vi vfiy, thdng ndm 2010 da d i l n Hfli nghj qudc t l vdi sy tham gia cda cdc nguyfin thd qudc gia chuyfin dfi v l bifin ddi hfiu todn d u nhdm dua cdc bifin phdp gidm thieu d c thdi, chit thdi gdy fl nhilm mfli trudng, cung nhu tdng cuflng d e phQdng tign, thilt bj hifin dai d l dy bdo thifin tai, thdm hpa sdm vd chinh xdc nhQ dy bdo dfing d i t , sbng thin, bao ed eudng dfl Idn, lu lyt, hgn hdn Vifit Ngm cd bfl b i l n ddi, nhilu ddo vd qudn ddo xa bd, vl vfiy chien iUpc b i l n ddo d n d sy hdp tdc vdl d c nudc tifin t i l n trfin t h l gidi d l d t h l dua nhflng dy bdo sdm thifin tai, thdm hga nhdm trdnh nhQng tmdng hpp rdi ro d ngodi khdi bao blln hofic sflng thin gdy nfin Rut kinh nghigm trgn dflng d i t mgnh d Hai-ti ndm 2009 vQa qua Idm sdp toan bfl cdc ngfli nha thdnh phd, d nQdc ta da d i n ldc d e nhd dau tQ xfiy dyng phdi tinh d i n k i t c l u chdng dflng d i t cho d c khu Chung cU cao t i n g d l phflng nhQng biln ddi khfl luflng b i l n ddi kht hgu gdy nfin EHMfSr.MraiO-AllOC VA CONG NGHE VINH LONG SO - 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