Why was the Practise of Shifting Cultivation Banned by European Foresters?

Why was the Practise of Shifting Cultivation Banned by European Foresters?

The practise of shifting cultivation was banned by the European foresters because:

They felt such land would become unfit for growing railway timber.

When forests were burnt, there was danger of flames spreading and burning valuable timber.

(iii) It made it difficult for them to calculate taxes.