Which of the following is one of the basic principles to establish vegetation?

Establishing vegetation is essential for erosion control and the stabilization of soil, particularly in areas prone to runoff and erosion. One of the basic principles in this process is to stabilize slopes. Stabilizing slopes involves reinforcing the soil structure with vegetation, which can help prevent soil erosion by reducing the speed of water runoff and increasing soil cohesion. Plant roots bind the soil together, allowing for better absorption of water and reducing the risk of landslides or washouts.

The other options do not align with the core principles of effective vegetation establishment. For instance, increasing land development often leads to greater soil disturbance and increased erosion risks. Minimizing water usage, while important in many contexts, does not directly support the establishment of healthy vegetation, which typically requires adequate moisture. Removing existing topsoil can significantly harm the soil ecosystem and hinder plant growth, as topsoil contains essential nutrients and microorganisms necessary for supporting vegetation. Hence, stabilizing slopes is a critical principle that not only supports vegetation establishment but also contributes to overall land and water management practices.