Before revision:  The model also reveals that the emerging power-law exponents depend on the overall vegetation-cover density exhibiting the same trend as empirical data and, remarkably, the fitted exponents agree reasonably well with the ones measured in well-known empirical studies. We conclude that environmental variability plays a key role in the formation of such vegetation patterns.
After revision:  The model also reveals that the emerging power-law exponents depend on the overall vegetation-cover density , in agreement with empirical observations, suggesting that environmental variability plays a key role in the formation of such vegetation patterns.