LDT stands for Landscape Dynamics Typology and is both the designation of the system designed to assess landscape pattern changes, and the name of the method behind it. Read synopsis here.

Is consists of:
-a conceptual framework and associated nomenclature
-a method (Landscape Dynamics Typology)
-two operating tools (one more to come)
LDTtool (for ArcGIS)
LDT4QGIS