Desertification
Desertification is land degradation in arid, semi-arid, and dry sub-humid areas resulting from climatic variations and human activities. Applying Desertification requires a stated place, ecological condition, water or land unit, affected stakeholders, and assessment timescale. Those choices determine how Desertification can be compared or acted upon.
In simple terms
In practical use, Desertification is land degradation in arid, semi-arid, and dry sub-humid areas resulting from climatic variations and human activities. For Desertification, the label organizes a condition or relationship but does not by itself demonstrate performance or compliance within a declared place, ecological condition, water or land unit, affected stakeholders, and assessment timescale. Desertification connects with Land degradation and Biodiversity offset; each can affect its application without sharing its definition. The candidate link between Desertification and Critical habitat remains a separate expansion question supported here by United Nations Convention to Combat Desertification.
Why it matters
Desertification matters because decisions about it determine which ecological condition is used as the baseline, whose water or land interests count, and whether an intervention fits its location. A defensible use of Desertification therefore exposes its boundary, method, evidence, responsible actor, and uncertainty before a conclusion is accepted. That discipline keeps Land degradation and Biodiversity offset from being treated as proof of Desertification when their criteria, scope, or results differ.
Example
A site and landscape team evaluates Desertification for a defined decision and records the relevant place, ecological condition, water or land unit, affected stakeholders, and assessment timescale. For Desertification, the team uses cited material from United Nations Convention to Combat Desertification to frame the decision and distinguish the idea from adjacent concepts, documenting the period, data, assumptions, and comparison with Land degradation. It treats Biodiversity offset and Critical habitat as separate questions rather than proxies for Desertification.
How it differs
Land degradation
Desertification is a concept; Land degradation has a different function. Evidence for Land degradation does not establish Desertification unless both sets of applicable criteria are met.