[英语翻译]关于水方面的

Thefreshwaterwhichcanbeusedonlyincludsthesewaterwhichflowsinthepools,partofundergroundwaterandwhichisfrozenintheiceberg.Thoughitcounts1.4billioncubickilometers,itisevensmallerthanonepercentofthetotalwaterontheearth.

Soweshouldkeepitinmindthatthereareonlyonepercentofthetotalamountofwatercanbeusedbypeople.Sotrytoimagethatthereare6billionpeoplewhilethereareonly1.4billioncubickilometersofwater,howmuchwatercanweown?Duetothesignificantlygrowingnumberofpeople,thatbothpeopledensityandthesizeofcitiesgrowatthesametime.Finallywehavetofacetoabigproblem,thatistheshortageofwater.

HereisthesituationofChina:

ThoughChinahasaprettyabundancesourceofwater,butthesituationisstilllnotoptimistic.Themainproblemsare:

1.waterresourcesunevendistribution

2.watershortageaggravates

3.seriouswaterpollution

Whenlookingatthestatisticsdataofwater,wewillfindthatthedistributionofwaterinChinahasaapparentlydifferencebetweenthenorthandthesouth.Theplacealongwithandinthesouthofthechangjiangriverhas53percentsofthetotalpeople,buthas81percentsofthetotalwater.Sointhenirth,thereis47percentsofpeoplebutonlyowns19percentsofwater.Someexpertspointoutthatduetothechangeofnatureenvrinonmentandthesehumanactivity,thesourceofwaterinhenorthwillreducewhileinthesouthitgrows.Thistrendisreallyapprentinthelast20years.Thistrendisincreasingtheproblem.

ThoughChinaowns2.8trilllioncubicmetersofwater,butChinaalsohasabigamountofpeopleinthemeantime,soChinaisalsoacountrywhichisshortofwater.Forthetimebeing,theamountofwateronepersonownsontheaverageisabout2200cubicmeters.Thisisaboutonequarteroftheaverageamountofworldpercapita.What'sworse,thenumberwilldropto1760in2030.

Thelastaspectisthewaterpollution.Themainreasonsofwaterpollutionincludingthefollowingthereaspects:

1.Themissingprocessingofindustrialwater.

2.Theoverusedofpesticides

3.Thepouringlivingwaterhasnotreachedthestandard.