Which of the following is not a means of conservation?

The means of conservation that is not effective is the burning of vegetation before cropping. This is because burning vegetation releases carbon dioxide into the atmosphere which contributes to climate change. It can also lead to soil erosion and loss of soil fertility, making it difficult for new crops to grow in the future. On the other hand, controlling excessive deforestation, prevention of poaching and replacing harvested mature trees with seedlings are all effective means of conservation. Controlling excessive deforestation helps to maintain a healthy balance between the amount of carbon dioxide in the atmosphere and the number of trees available to absorb it. Prevention of poaching helps to protect endangered animal species and maintain a balance in the ecosystem. Replacing harvested mature trees with seedlings ensures that new trees are planted to replace the ones that were cut down, helping to maintain the forest cover and prevent soil erosion.