sindhu-ganga-brahmaputr ka maidaan

himaalaya parvat ki utpatti ke pashchaat uske dakshin tatha praacheen shailon se nirmit praayadveepeeya pathaar ke uttar mein, dono uchch sthalon se nikalne waali nadiyon sindhu ganga brahmaputr aadi dvaara jama ki gayi jalodh mitti J jamaav se uttar ke vidhaal maidaan ka nirmaan huva hain. yeh maidaan dhanushaakaar rup me 3200 kimi. ki lambaai mein Bhaarat ke 7.5 lakh varg kimi. kshetr par vistrut hain.

moolat: yeh ek bhoo-abhinti gart hai jiska nirmaan mukhya roop se himaalaya parvatamaala nirmaan prakriya ke teesare charan mein lagbhag 6-4 karod varsh pehle hua tha. tab se ise himaalaya aur praayadveep se nikalne waali nadiyaaain apne saath laae hue avasaadon se paat rahi hain. in maidaanon mein jalodh ki ausat gaharaai 1000 se 2000 meter hai. uttari Bhaarat ka maidaan sindhu, ganga aur brahmaputr nadiyon dvaara bahaakar laae gaye jalodh nikshep se bana hai. is maidaan ki poorv se pashchim lanbaai lagbhag 3200 kilo meter hai. iski ausat chaudaai 150 se 3000 kilometer hai. jalodh nikshep ki adhakatam gaharaai 1000 se 2000 meter hai. uttar se dakshin disha mein in maidaanon ko teen bhaagon mein baaaint sakte hain bhaabhar, taraai aur jalodh maidaan. jalodh maidaan ko aage do bhaagon mein baaainta jaata hai- khaadar aur baaaingar.

bhaabhar 8 se 10 kilometer chaudaai ki patali patti hai jo shivaalik giripaad ke samaanaantar faili hui hai. uske parinaamasvaroop himaalaya parvat shreniyon se baahar niklati nadiyaaain yahaaain par bhaari jal-bhaar, jaise- bade shail aur golaashm jama kar deti hain aur kabhi-kabhi swayam isi mein lupt ho jaati hain. bhaabhar ke dakshin mein taraai kshetr hai jiski chaudaai 10 se 20 kilometer hai. bhaabhar kshetr mein lupt nadiyaaain is pradesh mein dhraatal par nikal kar prakat hoti hain aur kyonki inki nishchit vaahikaaeain naheen hoti, ye kshetr anoop ban jaata hai, jise taraai kehte hain. yeh kshetr praakॄtik vanaspati se dhaka rahata hai aur vibhinn prakaar ke vanya praaniyon ka ghar hai. taraai se dakshin mein maidaan hai jo puraane aur nae jalodh se bana hone ke kaaran baaaingar aur khaadar kahalaata hai.

is maidaan mein nadi ki praudhaavastha mein banane waali aparadani aur nikshepan sthalaakॄtiyaaain, jaise- baaloo-rodhaka, visrp, gokhur jheelein aur gunfit nadiyaaain pai jaati hain. brahmaputr ghaati ka maidaan nadeeya dweep aur baaloo-rodhakaaon ki upasthiti ke liye jaana jaata hai. yahaaain jyaadaatar kshetr mein samay par baadh aati rahati hai aur nadiyaaain apna raasta badal kar gunfit vaahikaaeain banaati rahati hain. uttar Bhaarat ke maidaan mein bahne waali vishaal nadiyaaain apne muhaane par vishv ke bade-bade deltaaon ka nirmaan karti hain, jaise- sundar van delta. saamaanya taur par yeh ek sapaat maidaan hai jiski samudra tal se ausat ooainchaai 50 se 100 meter hai. Haryana aur Delhi raajya sindhu aur ganga nadi tantron ke beech jal-vibhaajak hai. brahmaputr nadi apni ghaati mein uttar-poorv se dakshin-pashchim disha mein bahti hai. parantu Bangladesh mein pravesh karne se pehle dhubari ke sameep yeh nadi dakshin ki or 90° mud jaati hai. ye maidaan upajaai jalodh mitti se bane hain. jahaaain kai prakaar ki fasalein, jaise-gehooain, chaaval, ganna aur joot ugaai jaati hain. at: yahaaain janasankhya ka ghanatv jyaada hai.[1]

uttar ke vishaal maidaan ka pradeshik vibhaajan

  • bhaavar
  • taraai
  • baangar
  • khaadar

sandarbh