It comprises of larger parts of districts of Mianwali, Bhakkar, Layyah, Muzaffargarh and some parts of the districts of Khushab, Sargodha and Jhang. The soil are alluvial with sandy textured sand dunes covering 50 to 60 percent of the area. The mean maximum and minimum temperatures recorded in the tract are about 44˚C and less than 0˚C respectively. The average annual precipitation varies from 385 mm in the north-east to 170 mm in the south. Approximately three-fourth of annual rainfall is received during monsoon.
|Jand||Prosopis cineraria||Kikri||Acacia jacquemontii||Dhaman||Cenchrus ciliaris|
|Frash||Tamarix aphylla||Karir||Capparis aphylla||Khabbal||Cynodon dactylon|
|Van||Salvadora oleoides||Phog||Calligonum polygonoides||Chhimber||Eleusine flagellifera|
|Mesquite||Prosopis juliflora||Malai||Panicum antidotale|