ParyavaranKhaga · Class 6-8
'Wasteland' ka label aur sau saal ka nuksaan
Jo zameen kaagaz mein 'wasteland' likhi ho, kya woh sach mein bekaar hoti hai?
Socho pehle… phir dekho jawab
Nahi. Kai khuli ghaas ke maidan kaagaz mein 'wasteland' likhe jaate hain, jabki wahan bahut jeev rehte hain. Ek naye adhyayan ke mutabik ujda hua puraana maidan sau saal se zyada mein bhi wapas nahi banta.
Ghaas ke maidan (grasslands) mein chidiyaan, keede aur pashu rehte hain, aur charwahe apne pashu charate hain. Vaigyanik kehte hain ki duniya ki zameen ka lagbhag ek-tihai carbon grasslands mein sambhaala hota hai. Phir bhi record mein inhe aksar 'wasteland' likh diya jaata hai.
Ek naya PNAS adhyayan kehta hai: jo grasslands hazaaron saal mein bane, woh ujadne par aksar wahi shakl mein wapas nahi aate. Naye ugne wale 'secondary' grasslands mein paudhe lambe hote hain, kam kism ke hote hain aur bahar ke jhaad-jhankhaad jaise weeds zyada — kyunki mitti ke poshak tatva aur pH badal jaate hain.
Isliye kaam ki baat yeh hai: rebuilding se kuch jaanwar lautte hain (Solapur mein Godawan, Kutch mein lesser florican, Assam ke Orang mein pygmy hog), par pehle bachana zaroori hai. Ek vaigyanik ne ghaas ke maidan ke liye ek rashtriya restoration karyakram aur grazing neeti maangi hai.
Ghar pe try karo
Apne shehar ya gaon ke aas-paas ki khuli ghaas wali zameen dhoondo. Ek chart banao: wahan kaun se paudhe, keede, chidiyaan dikhe, aur log usse kaise use karte hain?
Wow!
Grasslands duniya ke zameeni carbon ka lagbhag ek-tihai sambhaalte hain, phir bhi unhe aksar 'wasteland' kaha jaata hai!
3 sawaal
- Grasslands duniya ke zameeni carbon ka lagbhag kitna hissa sambhaalte hain?
Jawab dekho
Ek-tihai. Vaigyanik kehte hain ki lagbhag ek-tihai zameeni carbon grasslands mein hai.
- Naye ugne wale secondary grasslands mein kya hota hai?
Jawab dekho
Kam kism ke paudhe aur bahar ke weeds. Secondary grasslands mein kism kam hoti hain aur bahar ke weeds zyada.
- Ujde puraane ghaas ke maidan ko wapas aane mein kitna waqt lag sakta hai?
Jawab dekho
Sau saal se zyada. Adhyayan ke mutabik ismein sau saal se zyada lag sakta hai.
NCERT se jodo: NCERT Class 7 Science — jungles ke jeev; NCERT Class 8 Science — jeevon ka sangrakshan