Umjikelezo wamanzi usinika ngokwemvelo

Biosphere iplanethi imelelwa ihlelwe uqweqwe igobolondo. Imingcele yayo ngokuyinhloko zilawulwe ukuba khona emkhakheni wokuphila. Ingqikithi has a igobolondo heterogeneous physico-amakhemikhali ukwakheka. Phila, biogenic, thinta, bioinert, a enemisebe izidakamizwa, into imvelo cosmic, ama-athomu ehlakazekile - yilokhu elakha uHlu Jikelele Lwamakheli. Umehluko omkhulu phakathi kwalesi igobolondo ezingeni layo eliphezulu yenhlangano.

Umjikelezo global amanzi ngenxa ithonya namandla kwelanga. Imisebe yalo siwela phezu kwanoma iyiphi komhlaba, ngokudlulisela bamandla alo H2O, amalahle, kanye iguqulwe ibe umusi. Kwakucatshangwa ukuthi banikezwe izinga ukuhwamuka ngehora, iminyaka eyinkulungwane njengoba umbhangqwana ungaya zonke izilwandle.

izindlela zemvelo yakha omningi uketshezi asemkhathini uthumele kubo buqamama sasivumela eside, wabuyela kubantu iplanethi ngesimo kwezulu. Inzika, liwele phansi, bangene emfuleni. Awela ulwandle.

Hlukanisa umjikelezo wamanzi ezincane nezinkulu. Encane ngenxa imvula izilwandle zomhlaba. Umjikelezo wamanzi elikhulu ezihambisana nayo kwezulu umhlaba.

Unyaka ngamunye elachithwa emhlabathini mayelana cubic metres ayizinkulungwane ezingamakhulu yamanzi. Ngenxa yakhe ubuyise emachibini, emifuleni, ulwandle, umswakama futhi lingena singene amatshe. Ingxenye ethile yale amanzi iyasha, abanye - ubuyela izilwandle nezilwandle. Inani ezithile ukusetshenziswa eziphilayo nezitshalo ukukhula kanye nokudla ophilayo.

Umjikelezo wamanzi usinika ikhuthaza hydration kwezindlela kanye yemvelo simiso semvelo eliwumhlaba. I eduze endaweni olwandle, imvula ngaphezulu uwela. Nge sushi umswakama igcina esabuya olwandle. Inani elithile ukuhwamuka, ikakhulukazi ezindaweni ezinamahlathi. Ingxenye umswakama eqoqwe phezu kwemifula.

Umjikelezo wamanzi usinika kudinga isamba esikhulu amandla. Yonke inqubo wachitha cishe ingxenye eyodwa kwezintathu kuso sonke ubuningi eyatholakala kusukela elangeni. Ngaphambi ukuthuthukiswa impucuko kwaba yakhoibrium Umjikelezo wamanzi: olwandle yawela emanzini esiningi njengoba iyasha. Ngezinye sezulu njalo wayengeke shallowing emifuleni nasemachibini amaningi.

With ukuthuthukiswa impucuko, umjikelezo wamanzi phathelana iphazamiseke. izitshalo Ukunisela ukunyusele ukwanda ukuhwamuka. Esifundeni eseningizimu kwakukhona shallowing abalulekile emifuleni. Ngakho, past koleminyaka engamatshumi amathathu langaphezulu, le Amudarya futhi Syrdarya wayeseletha amanzi okuncane kakhulu ne-Aral Sea ngenxa izinga lamanzi, futhi kwehle kakhulu. Ndawonye nale ukubukeka ifilimu uwoyela phezu izilwandle encishisiwe simo esishubile.

Zonke lezi zici abe nomthelela omubi isimo uHlu Jikelele Lwamakheli. Kuthinta hhayi kuphela ezindaweni aseningizimu. izinguquko ezinkulu kubalwe ezindaweni ezisenyakatho. Ngokuvamile eminyakeni yamuva nesomiso zenzeka, emaphaketheni kumiswa izinhlekelele zemvelo. Ngokwesibonelo, eNtshonalanga Yurophu phakathi nale minyaka emithathu noma emine eyedlule ehlobo kwaba kushisa kakhulu. Nakuba esikhathini esidlule isimo sezulu kulamave yayithambile kakhulu. Ngenxa yalokho, ukwanda ngokweqile e lokushisa ngokuvamile zenzeka umlilo wequbula steel.