5.3 Establish the dynamic investment mechanism of the GFG
The SCP, the GFG investment and the SCE are not isolated states, but
constitute a complete system together, and there are dynamic circulation
characteristics between each other. Specifically, the SCP calculated by
the theoretical model can provide decision-makers with the investment
intensity of GFG in different regions for a while in the future, to
achieve the economical and intensive utilization of resources and reduce
the cost of policy implementation. The investment of GFG will inevitably
reduce the amount of soil erosion in the region and produce a certain
SCE. At the same time, the dynamic change of SCE and the interference of
external factors will modify the SCP accordingly, so as to provide a
reference for the key input direction of the GFG in the next stage
(Figure 6). Through the continuous circulation among the three, the
ideal SCE is finally achieved.
[Figure 6 near here]
Therefore, in order to optimize the GFG, it is suggested to establish
the GFG dynamic investment mechanism. In the future formulation of the
GFG plan, an appropriate implementation period should be set on the
basis of full consideration of the SCP. Considering the time delay of
vegetation growth and development, this period should have a large time
span. After the implementation period is reached, the new SCP is
calculated, and based on this adjustment, the implementation plan for
the next stage is formulated.