The distribution area of Long-root onion, kolba (Allium microdictyon Prokh.).

Object description Download GIS-layers


The expert-botanist - Chukhina I.G.
The GIS-expert - Sinitsyna T.A.

Date of creation:




Accuracy of map:

Map was created using data from herbarium specimens and maps to the scale of 1:17,000,000-1:25,000,000.

The projection:

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

Basic contents:

Vector map. Area of species distribution is shown by polygons; actual location occurrence is shown by points.

Accuracy of classifier:

Point data were obtained from literature and herbarium specimen data. Polygons were created using literature, herbarium samples, and field surveys by the authors.

Method of map production:

Published literature was reviewed, including atlases, monographs and papers. Occurrence data were obtained from herbarium specimens, floras, monographs and papers. The following sources were used to determine the distribution area of this species: N.I. Vavilov Institute (1999), Schmidt (1990) and Friesen (1988). The species has a disjunctive area. The borders of the northern part of the area were drawn according to Schmidt (1990). In the Urals, the borders of the polygon were constructed according to Schmidt (1990) and were expanded using information from herbarium specimens (N.I. Vavilov Institute, 1999). In the Irtysh river basin, the borders of the polygon were corrected using the map published by Friesen (1988). The borders of the southern Siberian area were constructed using maps published by Schmidt (1990). Around the Altai-Sajan mountainous country region, the western border, and the Lena river basin, the northern border of the area was widened using the map published by Friesen (1988). It was decided that locations isolated from the basic area at the border of Northern Kazakhstan shouldn.t be included in the polygon. Data were then compiled through scanning and geo-referencing to develop a composite vector map. The biologist, together with the GIS specialist, drew a new plant distribution area based on compiled data.

Reference citations:

Central Siberian Botanical Garden [NS], Novosibirsk, Russia.
Friesen N.V. 1988. Onions plants of Siberia. Novosibirsk: Nauka. 184 p. (In Russian)
N.I. Vavilov All-Russian Institute of Plant Industry [WIR], St. Petersburg, Russia.
N.I. Vavilov Institute, Herbarium Department, 1999. Information retrieval system: wild-growing relatives of cultural plants of Russia. STC Informregistr 0229905883, St. Petersburg, Russia.
Schmidt V.M., ed. 1990. Areas of distribution of medicinal plants and their relatives in the USSR (Atlas). 2nd Edition (revised). Leningrad: Leningrad University Publishers. 60 p. (In Russian)
Tomsk State University [TK], Tomsk, Russia.

Right and copyright:

Copyright on this map and its description belongs to its authors.
Copyright on the photo belongs to Chukhina I.G.

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