Amanzi amanzi

Amanzi sisiseko sokusebenza kwazo zonke izityalo zeplanethi. Amazwe amaninzi afumana ukunqongophala kwamanzi ahlambulukileyo namhlanje. Ngokweengcali ze-UN, i-1/6 yabemi, ukufikelela kwamanzi okusela kunqongophele, kwaye ukufikelela kwe-1/3 kuphelelweyo kumanzi obugcisa asetshenziselwa ubomi bemihla ngemihla - amanzi angenakubizwa ngokuba ngamanzi okusela.

Yintoni ebangela ingxaki yamanzi amanzi?

Okokuqala - ukukhula koluntu. Unyaka ngamnye, inani labantu emhlabeni liyakhula malunga nezigidi ezingama-85, ezilandelelanayo, zandisa ngokusetyenziswa kwamanzi.

Ekuqhubekeni kwejometri , ukungcola kokusingqongileyo ngeentlobo ezahlukeneyo zokuchitha, kuquka ukuthuthwa kwamanzi, kukhula kwakhona. Kakade kule nkulungwane, ihlabathi leemfuno liza kudlula ngokugqithiseleyo ukunikezela kwamanzi amanzi.

Ukufudumala kwehlabathi kukubangela ukuba i-glaciers iyancibilika ngakumbi, igcine i-thirds of all water fresh. Kwi-Alps, umzekelo, i-glaciers ilahlekelwa kwi-1% ngonyaka. Kubonakala ukuba ukulahlekelwa ngu-10% yonke iminyaka eyi-10, i-20% yonke iminyaka engama-20. Kwaye oku kuthetha ukuba ekupheleni kweli nkulungwane ukusuka kumaqabunga, mhlawumbi, akuyi kubakho nto. Kuyafana nePeru, i-Ecuador, eBolivia. Ngaphezu koko, ukuchithwa kwee- Alaska glaciers kwakha kabili.

Ngaphezu koko, ukutyungulwa kweqhwa le-Arctic liye laphuthuma, eliya kubangela ukuba kunyuke ukwanda kwinqanaba le-Ocean World. Kwaye oku kuthetha ukuba kwiminyaka engama-20 ukuya e-30 engaphantsi kwamanzi ibe yiLondon, eBerlin, eParis, eNew York, eSt. Petersburg, kwezinye iidolophu.

Ngokutsho kweengxelo ezichaziweyo zePentagon abahlalutyi, utshintsho lwemozulu luza kubangela ukuba izikhukhula ezinkulu, zikhokelela kwiintlekele zehlabathi. Akunzima ukuqagela iziphumo: iingxabano ezinkulu zempi ziya kuqala. Amanzi okusela aya kuba yintsebenziswano yeNombolo 1. I-reserves yayo iya kuncipha kakhulu kangangokuthi urhulumente wamazwe amaninzi uya kubakho ukukhusela izixhobo zawo ngokusebenzisa izixhobo kunye nokutshabalalisa. Iimfazwe zokufumana iimithombo zamanzi amanzi ziqala emhlabeni jikelele. Imeko ekhulayo yabalobi bengxelo yafaniswa noko kwenzeka ntoni malunga ne-8000 iminyaka edlulileyo: ukusilela kwezityalo, indlala, izifo, ukufuduka kwabantu abaninzi, iimfazwe eziqatha.

Amanzi amnandi eRashiya ngowesithathu kwisithathu sehlabathi. Kuvela ukuba yiRashiya ngokuzenzekelayo ibe yinto ephambili yokubambisana, i-tidbit engamazwe amaninzi.

Yintoni iLake Baikal yedwa? Lona manzi ahlambulukileyo, umthamo olinganayo nomlinganiselo weeLwandle eziMakhulu eziMntla eMntla Melika, eyi-23,000 cubic meters. Km! Eli li-20% yamanzi apheleleyo amanzi kwiplanethi yonke. I-Baikal ayinazo izifaniso.

Enyanisweni, amanzi amancinci sele abe yimveliso eqhinga ngoku. Asisayikumangaliswa ngamabhodlela eplastiki ngamanzi alula kwii-shelves zokugcina, nangona kwakungekho iminyaka engama-20 edlulileyo kwintsimi yeCIS (yangaphambili i-USSR). Unyaka ngamnye ngaphezu kweelitha ezili-100 ezilitye zamanzi zithengiswa, inzuzo evela kuthengiswayo iyamangalisa: iidola ezigidi ezintathu ngonyaka (kwaye oku ku malunga). Oku malunga nesiqingatha semvuzo yeenkampani zonke zeoli. Yonke into iya kwinto yokuba ishishini elakhelwe kumanzi acocekileyo (ngaphandle kweengcaphuno, ngendlela engokoqobo) iya kuba yinzuzo kakhulu. Kungenzeka ukuba amanzi ahlambulukileyo aya kuba yintsikelelo kubantwana bethu ...