Assertion: desertification | /r/HasProperty | cultivation
Facets:
Source sentences:
text: If desertification can be identified by some of its component subprocesses, such as soil erosion, deforestation, overgrazing, or cultivation in marginal areas (determined, for example, by soil characteristics or by the amount of rainfall), then there is a great deal of research activity under way that relates directly as well as indirectly to desertification, without explicitly having desertification in its title (e.g. Riquer, 1982).