Assertion: desertification | /r/HasProperty | reversed in some areas of western china
Facets:
value: since the 1980s
type: TEMPORAL
Source sentences:
text: (2005) determined that the net primary productivity of the same desert and grasslands during 1982-1999 "increased by 1.6% per year and 1.1% per year, respectively," and that "desertification has been reversed in some areas of western China since the 1980s," citing the work of Runnstrom (2000), Wu (2001), Zhang et al.