Crops

The cultivated area of yellow sweetclover (Melilotus officinalis (L.) Pall.).

Object description Download GIS-layers

Authors:

Scientists - Dzyubenko N. I., E. A. Dzyubenko.
GIS-specialist - Dzyubenko A. N.

Date of creation:

24.12.2003

Scale:

1:20,000,000.

Accuracy of map:

Created using maps that had the following scale: 1:25,00,000-1:40,000,000.

Projection:

"Alber's Equal Area Conic for Russia" 9, 1001, 7, 100, 0, 44, 68, 0, 0

Basic contents:

Vector file consisting of polygons. Polygons represent area of possible distribution of the species.

Accuracy of classifier:

Polygons are based on literature sources, herbarium samples, political boundaries and field surveys by the authors.

Method of map production:

Historic agricultural statistics were reviewed at the level of agricultural region. The Former Soviet Union had 16 regions. The boundaries from the 1:4000000 map of Arable Lands were used to further refine crop distribution (Koroljeva et al., 2003). The final map was constructed according to a generalization of region maps, arable-lands map (dark blue polygon), map of lands permitted for cultivation without non-arable-lands (light blue polygon).

Reference citations:

Catalog of agricultural crops cultivars permitted in Byelorussia. 1985. Minsk: Uradjai, 176 pp. (in Russian).
Catalog of state permitted cultivars of agricultural crops. 1969. -Moscow: Kolos, 489 pp. (in Russian).
Catalog of state permitted cultivars of agricultural crops. 1971. -Moscow: Kolos, 488 pp. (in Russian).
Catalog of state permitted cultivars of agricultural crops. 1974. -Moscow: Kolos, 480 pp. (in Russian).
Catalog of state permitted cultivars of agricultural crops. 1985. -Moscow: Kolos, V. 3: 489. (in Russian).
Koroljeva IE, Vilchevskaya EV, Ruhovich DI. 2003. Digital Arable Land Map. Laboratory of Soil Information of the Dokuchaev Soil Institute, Moscow, Russia [Based on: Yanvareva LF. (ed.), Martynjuk KN., Kisileva NM. 1989. Map of Land Use, Faculty of Geography, Moscow State University, Moscow, Russia.].
State register of breeding achievements permitted for utilization. Plant cultivars. 2003. Moscow: 236 pp. (in Russian).
The register of plant cultivars in Ukraine. 1996. Kiev: Urojai, 259 pp. (in Russian).

Rights and copyrights:

Copyright on the map and descriptions belong to its authors;
Copyright on the photos belong to Dzyubenko N. I.