on soil erosion
control under different rainfall regimes. The natural resources, land use patterns, and population densities in the Wangjiaqiao watershed are typical of the surrounding region (Bu et al., 2008; Feng et al., 2008; Shi et al., 2004; Wan et al., 2010). Therefore, the results derived from this small watershed within the TGA give an indication of possible trends occurring throughout the TGA.