Section 4(1)(a) in Tamil Nadu Preservation of Private Forests Rules, 1946
(a)Before granting permission to cut trees by the clear felling method in a forest, one or more compact block shall be selected so as to provide not less than ten (10) annual coupes in respect of casuarina, eucalyptus and wattle trees and twenty (20) annual coupes in respect of silver oak trees, fifteen (15) annual coupes in respect of pine tree and twenty-five (25) annual coupes in respect of other trees. Trees shall be permitted to be cut only in one coupe in each block during a specified year.