Njengoba sibonile esihlokweni Ukukhula komnotho noma ukusimama kwemvelo?Kunabantu abakholelwa ukuthi ukukhula komnotho akunamkhawulo ngesikhathi. Kepha iqiniso lihlukile. Ukukhula komnotho kusekelwe ekuxhashazweni nasekusetshenzisweni kwemithombo yemvelo esinikezwa yiplanethi yethu. Kepha labo izinsiza zilinganiselwe futhi isilinganiso sabo sokuvuselelwa kumele sibe ngaphansi kunenani lokuxhashazwa ukuze baqhubeke nokusizakala ngabo. Lowo mgomo waziwa njengemingcele yamaplanethi.
Isidalwa esingumuntu, ngemuva kwenguquko yezimboni, sikhuphule inani labantu emhlabeni futhi lokhu kuholele ekwandeni ekusetshenzisweni kwemithombo yemvelo. Lokho kuxhashazwa kukhulu kangangokuba isivele yeqe umthamo wokuphatha wemvelo, okuholela ekusweleni kwemvelo.
Kunemikhawulo eyi-9 yamaplanethi: Izinga lokuqothulwa kwezilwane, ukushintsha kwesimo sezulu, ukuncipha kongqimba lwe-ozone, i-acidification yolwandle, ukuguquguquka kwemvelo kwe-biogeochemical, ukusetshenziswa kwamanzi ahlanzekile, izinguquko ohlelweni Lomhlaba, ukulahleka kwezinto eziphilayo kanye nemisebenzi yayo nezinto ezintsha.
Namuhla ukusetshenziswa namaphethini wokukhiqiza ohlelo lwethu lwezomnotho asevele enza kuze kube imingcele emine kwayisishiyagalolunye yamaplanethi. Le mikhawulo yilokho okuqinisekisa ukusebenza kahle koMhlaba nazo zonke izinhlelo zawo eziyinkimbinkimbi ezisebenza ngokulinganisela okunengqondo.
Ukuguquka kwesimo sezulu, izinga lokuqothulwa kwezinhlobo zezilwane, izinguquko ekusetshenzisweni komhlaba kanye nokuguquguquka kwemvelo kwe-phosphorus ne-nitrogen yizinhlelo ezisezingeni eliphansi esezedlule. Lokhu kusho ukuthi kwandisa ubungozi lokho kufaka phakathi ukuqhubeka nokwenza imisebenzi yabantu ngaleli zinga. Okunye ukuhlolwa kwesayensi kuyasebenza ukuqinisekisa ukuthi ukusetshenziswa kwamanzi ahlanzekile sekuvele kweqiwe yini futhi kufakwa ohlwini lwemikhawulo yamaplanethi edlula umkhawulo ophephile.
Imvelo inendlela yokukwazi ukwamukela imithelela yabantu ezinhlelweni zayo zemvelo futhi kungenxa yalezi zici zomzimba neziphilayo lapho iplanethi yethu ihlale izinzile iminyaka eminingi esingahlala kuyo "ukuvumelana". Noma kunjalo, kukhona ukungaqiniseki kwesayensi ngaphambi kwemiphumela ebangelwa ukuhlanekezelwa kwala maphethini agcina iplanethi izinzile. Yingakho sizithola sinekusasa elingaqinisekile elingase lihambisane nalokhu ushintsho olungalungiseki kwizinsizakusebenza esincike kuzo ukuze siphile.
Ngokuqondene nomkhawulo wamanzi amasha, kufundwa ububanzi bokusebenza obuphephile bokusetshenziswa kwamanzi. Okwaziwa ngenxa yeLiving Planet Index, ukuthi amanzi amasha akhombisa ukuthi ilahlekile Ama-81% ezinhlobo zabantu phakathi kuka-1970 no-2012.
Ngakolunye uhlangothi, umkhawulo wokushintsha kwesimo sezulu ulinganiswa ukugxila kwe-CO2 emkhathini namanye amagesi abamba ukushisa. Futhi sinomkhawulo wokwenyuka kwamadigri amabili emazingeni okushisa aphakathi komhlaba. Ngenxa yalokhu, ukuhlushwa okuphezulu kwe-CO2 akumele kudlule 400 ppm. Nokho, isilinganiso semikhawulo esinqunyiwe seqiwe kabili kulandelana.
Kuneminye imikhawulo yamaplanethi enikeza ukungaqiniseki okukhulu kwesayensi lapho uyikala futhi uyiqopha. Ngokwesibonelo, ukulahleka kwemisebenzi yemvelo kunzima kakhulu ukukala. Ukuvela kwemikhiqizo emisha, njengezinto ezishintshwe izakhi zofuzo noma imfucumfucu enemisebe ye-radioactive, kubuye kube ngumkhawulo weplanethi okunzima ukuwulinganisa nokugcina amarekhodi noma ukwenza imiphumela eholela ekwedluleni.
Inzuzo, okungukuthi, lokho yonke imingcele yamaplanethi ihlobene. Izinhlobonhlobo zezinto eziphilayo nezimo zezulu yizona zinto ezimbili ezigcina izimo ezizinzile ezidinga iplanethi ukuqinisekisa impilo esiyiphilayo. Lezi zinto yizona ezingakwazi ukumelana kangcono nomthelela weminye imikhawulo yeplanethi. Okungukuthi, i-ecosystem enezinhlobonhlobo eziningi zezinhlobo zezinhlobo zezinto eziphilayo, ingamelana kangcono nemithelela ukuthi siyasicasula kuwo, ngoba kukhona isibalo esikhulu sobudlelwano nokuncika phakathi kwabo.
Olunye ushintsho emingceleni yamaplanethi lungaguqulwa ngezinyathelo ezinqala nesikhathi esanele, njengoba kwenzekile nokwehliswa komgodi kusendlalelo lwe-ozone ngemuva Isivumelwano saseMontreal nezinyathelo zokususa ama-chlorofluorocarbons (CFCs) esiqandisini nasezinhlelweni ze-aerosol. Kwezinye izimo, inkinga ingamiswa kuphela, kepha ukululama okunjalo akunakwenzeka, njengoba kwenzeka ngokuqothulwa kwezinhlobo.
Kepha okufanele sikunake wukuthi noma yini esiyenzayo, sizoqhubeka nayo ukuguqula iplanethiYingakho kufanele siqinisekise ukuthi lezi zinguquko azinakubuyiseka futhi zisivumele ukuthi siqhubeke nokujabulela izimo esiphila ngaphansi kwazo njengamanje.