The Total Economic Loss/Benefit of the Alpine Grassland Caused by Degradation.

Note: ND, LD, MD, HD, SD represent non-degradation, light degradation, moderate degradation, heavy degradation and severe degradation, respectively.备注：ND、LD、MD、HD、SD分别代表无降解（non-degradation）、轻度降解（light degradation）、中度降解（moderate degradation）、重度降解（heavy degradation）与极重度降解（severe degradation）。