5.2 Innovation and advantages of the SCP model
The innovation of this study is the SCP model with vegetation coverage
as the core. The model describes the difference between the soil erosion
level in different regions at different times and the theoretical
minimum soil erosion level, reflecting the extent of improvement and
spatial difference of soil erosion control. And, it not only inherits
the evaluation criteria of absolute quantity reduction commonly used in
the evaluation system of SCE but also provides a theoretical basis for
the investment of GFG. The greater SCP is, the greater the gap between
the current situation of soil erosion and the ideal situation is, and
the higher intensity of GFG should be. On the other hand, if the SCP is
small, it indicates that the current situation of soil erosion is close
to the ideal situation, and relatively low GFG investment should be
given. The advantage of this approach is that corresponding GFG
strategies can be developed for different regions to control costs and
improve the effectiveness of governance and policy implementation. The
proposal and application of this model provide the public with a further
understanding of the relationship between the GFG and soil conservation
and provide a new way of thinking for the optimization of GFG in the
future.