jalasambhar

jalasanbhar ka udahaaran - laal rang ki lakeer jalavibhaajak kshetr ko darsha rahi hai

jalasanbhar ya droni us bhaugolik kshetr ko kehte hain jahaaain varsha athva pighlati barf ka paani nadiyon, neharon aur naalon se bah kar ek hi sthaan par ekatrit ho jaata hai.[1] us sthaan se ya to ek hi badi nadi mein paani jalasanbhar kshetr se nikaas kar ke aage bah jaata hai, ya fir kisi sarovar, saagar, mahaasaagar ya daladali ilaake mein ja ke mil jaata hai. is sandarbh mein kabhi-kabhi jalavibhaajak shabd ka bhi prayog hota hai kyonki bhinn-bhinn jalasanbhar kisi bhi vistrut kshetr ko alag-alag jal mandalon mein vibhaajit karte hain.[2] jalasanbhar khule ya band ho sakte hain. band jalasanbhaaron mein paani kisi sarovar ya sookhe sarovar mein ja kar ruk jaata hai. jo band jalasanbhar shushk sthaanon par hote hain unamein aksar jal aa kar garmi se bhaap bankar hava mein vaashpit (ivaiporet) ho jaata hai ya use dharati sokh leti hai. padausi jalasanbhar aksar pahaadon, parvaton ya dharati ki bhinn dhalaanon ke kaaran ek-dusare se vibhaajit hote hain. bhaugolik drushti se jalasanbhar ek keep (yaani fanal) ka kaam karte hain kyonki ve ek vistrut kshetr ke paani ko ikkatha kar ke ek hi nadi, jalaashaya, daladal ya dharati ke bheetar paani sokhane vaale sthaan par le jaate hain.

anukram

anya bhaashaaoain mein

angreji mein "jalasanbhar" ko "vautarashaid" (watershed) ya "kaichameint" (catchment), "jalavibhaajak" ko "drenej divaaid" (drainage divide) aur "droni" ko "besin" (basin) kaha jaata hai.

jalaavibhaajakon ki shreniyaan

jalavibhaajak teen mukhya prakaar ke hote hain -

  • mahaadveepeeya vibhaajak - is vibhaajan mein kisi mahaadveep ke ek jalasanbhar ka jal ek or ke mahaasaagar ki taraf bahata hai aur uske padausi jalasanbhar ka jal doosari or ke mahaasaagar ki taraf bahata hai. misaal ke liye afreeka ke mahaadveep par neel nadi ke jalasanbhar ka paani uttar ki or bahakar bhoomadhya saagar mein vilay ho jaata hai lekin uske padausi kaango nadi ke jalasanbhar ka paani pashchim ki or bahakar andh mahaasaagar mein vilay ho jaata hai.
  • bruhad vibhaajak - yeh vo bade vibhaajak hain jinmein jal do bhinn aur ek-dusare se kabhi na milne waali nadiyon mein alag-alag to bahata hain, lekin donon nadiyaaain ant mein jaakar ek hi saagar ya mahaasaagar mein vilay ho jaati hain. cheen ki hvaangaho aur yaangtseekyaang nadiyon ke jalavibhaajak iska udahaaran hain - donon nadiya alag-alag bahateen hain lekin ant mein jaakar donon prashaant mahaasaagar mein hi mil jaati hain.
  • laghu vibhaajak - yeh vo chhote paimaane ke vibhaajak hote hain jinmein jal alag-alag nadiyon mein ekatrit to hota hai lekin ve nadiyaaain swayam hi aage chalakar mil jaati hain. iski misaal ganga aur yamuna ke jalavibhaajak hain.

vishv ke mahatvapoorn jalasanbhar

pruthvi ke is nakshe mein vishv ke bade jalasanbhar kshetr dikhaae gaeain hain. bhinn mahaasaagaron aur saagaron mein khaali hone vaale jalasanbhar bhinn rangon mein darshaae gaeain hain. sleti rang ka prayog band jalasanbharon ke liye hua hai jo kisi saagar ya mahaasaagar mein paani naheen bahaate.

विश्व के बड़े जलसंभर क्षेत्र - भिन्न महासागरों और सागरों में ख़ाली होने वाले जलसंभर भिन्न रंगों में दर्शाए गएँ हैं - स्लेटी रंग का प्रयोग बंद जलसंभरों के लिए हुआ है जो किसी सागर या महासागर में पानी नहीं बहाते

inhein bhi dekhiye

  • nadi
  • band jalasanbhar

sandarbh

  1. "Hydrologic Unit Geography". Virginia Department of Conservation & Recreation. http://www.dcr.virginia.gov/soil_and_water/hu.shtml. abhigman tithi: 21 November 2010.
  2. "drainage basin". www.uwsp.edu. http://www.uwsp.edu/geo/faculty/ritter/glossary/a_d/drainage_basin.html. abhigman tithi: 2008-02-21.