Question

How did forest rule effected cultivation

Answer 1

People used to practice the shifting cultivation, where a part of forest is burnt and used for cultivation for few years till it is fertile, than left alone and moved to other place. The previous part grows back and restore its fertility till that time. 
Government found it very dangerous and valuable timber is lost in this process. So they banned forest cultivation which left the farmers with no livelihood.

Answer 2

after the forest act all the everyday practices of The villages like fishing hunting gathering all became legal .

Now the villagers were forced to steel wood from the forest.