Ososayensi babikezela ukuthi eminyakeni engama-30, inani lamanzi elifanele ukuphuza lizoba uhhafu. Kuzo zonke izinqolobane, ¾ amanzi ahlanzekile emhlabeni aqukethwe esimweni esiqinile - ezinguzungeni zeqhwa, futhi kuphela ¼ - emizimbeni yamanzi. Imithombo yamanzi okuphuza emhlabeni itholakala emachibini anamanzi angenasawoti. Okudume kakhulu kunakho okulandelayo:
- Phezulu;
- ITanganyika;
- IBaikal;
- ILadoga;
- I-Onega;
- USarez;
- URitsa;
- Balkhash nabanye.
Ngaphezu kwamachibi, eminye imifula nayo iyaphatheka, kepha ngezinga elincane. Izilwandle zokufakelwa kanye namachibi okwenziwa agcina amanzi ahlanzekile. IBrazil, iRussia, iU.SA, iCanada, iChina, iColombia, i-Indonesia, iPeru, njll. Zinamanzi amaningi emhlabeni.
Ukushoda kwamanzi angenasawoti
Ochwepheshe bathi ukube wonke amadamu anamanzi ahlanzekile ngokulinganayo ahlukaniswe emhlabeni, khona-ke bekuzoba namanzi okuphuza anele abo bonke abantu. Kodwa-ke, la madamu asatshalaliswa ngokulingana, futhi kunenkinga yomhlaba wonke njengokushoda kwamanzi okuphuza. Kunezinkinga ngokutholakala kwamanzi okuphuza e-Australia nase-Asia (East, Middle, North), enyakatho-mpumalanga yeMexico, eChile, e-Argentina, kanye nase-Afrika yonke. Sekukonke, kushoda amanzi emazweni angama-80 omhlaba.
Umthengi omkhulu wamanzi ahlanzekile ezolimo, ngesabelo esincane sokusetshenziswa kukamasipala. Njalo ngonyaka isidingo samanzi ahlanzekile siyakhula, nenani laso liyancipha. Akanaso isikhathi sokuqhubeka. Umphumela wokushoda kwamanzi:
- ukunciphisa isivuno sezitshalo;
- ukwanda kwezehlakalo zabantu;
- ukoma kwabantu abahlala ezindaweni ezomile;
- ukwandisa ukufa kwabantu ngokuswela amanzi okuphuza.
Ukuxazulula inkinga yokushoda kwamanzi ahlanzekile
Indlela yokuqala yokuxazulula inkinga yokuswelakala kwamanzi okuphuza ukonga amanzi, okungenziwa yiwo wonke umuntu emhlabeni. Ukuze wenze lokhu, kuyadingeka ukunciphisa inani lokusetshenziswa kwalo, ukuvimbela ukuvuza, ukuvula ompompi ngesikhathi, hhayi ukungcolisa nokusebenzisa imithombo yamanzi ngendlela enengqondo. Indlela yesibili ukwakha amadamu amanzi ahlanzekile. Ochwepheshe batusa ukuthuthukisa ubuchwepheshe bokuhlanzwa kwamanzi nokucubungula, okuzowonga. Kungenzeka futhi ukuguqula amanzi anosawoti abe ngamanzi ahlanzekile, okuyindlela ethembise kakhulu yokuxazulula inkinga yokushoda kwamanzi.
Ngaphezu kwalokho, kuyadingeka ukushintsha izindlela zokusetshenziswa kwamanzi kwezolimo, isibonelo, sebenzisa ukuchelela ngenkasa. Kuyadingeka ukusebenzisa eminye imithombo ye-hydrosphere - sebenzisa izinguzunga zeqhwa futhi wenze imithombo ejulile ukuze wandise inani lezinsizakusebenza. Uma sisebenza ngaso sonke isikhathi ukuthuthukisa ubuchwepheshe, khona-ke kungekudala kuzokwazi ukuxazululwa inkinga yokushoda kwamanzi ahlanzekile.
