Research Methodology - Historical Land Use/Land Cover Classification Using Remote Sensing - page 103

Table 5.3 Variations, source, and date used training samples in the supervised classification process

Classes 1975 1987 2005 2007

Cultivated and managed
areas

Visual interpretation Visual interpretation Visual interpretation Visual interpretation

Trees Topographic maps Google Earth Google Earth

Herbaceous (permanent-
and winter-crops/
irrigated):

N.C. N.C. N.C. N.C.

Alfalfa N.C. ICARDA-points,

statistical records,
and detailed
schemes

N.C. N.C.

Vetch N.C. ICARDA-points,

statistical records,
and detailed
schemes

N.C. N.C.

Wheat N.C. ICARDA-points,

statistical records,
and detailed
schemes

GORS-points, and
visual interpretation
for multi-temporal
images in this year

Field work, and visual
interpretation for
multi-temporal
images in this year

Barley N.C. ICARDA-points,

statistical records,
and detailed
schemes

GORS-points, and
visual interpretation
for multi-temporal
images in this year

Field work, and visual
interpretation for
multi-temporal
images in this year

Sugar beet N.C. ICARDA-points,

statistical records,
and detailed
schemes

GORS-points, and
visual interpretation
for multi-temporal
images in this year

Field work, and visual
interpretation for
multi-temporal
images in this year
(continued)