Weeds

Area of distribution and harmfulness of Brassica campestris L.

Object description Download GIS-layers

Authors:

Object specialist - S.Yu. Larina,
GIS-specialist - I.A. Budrevskaya

Date of creation:

15.03.2004

Scale:

1:20 000 000

Accuracy of map:

Map was created based on materials of maps of natural scale 1:5 000 000 - 1:100 000 000.

Projection:

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

Basic contents:

Vector map. Area of species distribution is shown by polygons, and sporadic distribution by points. Zones of weediness are shown by polygons.

Accuracy of classifier:

The weed area is subdivided into two zones, one representing species distribution, and the second where weed is considered a serious pest. Points represent locations where sporadic occurrence has been reported. The zones of harmfulness were established according to criteria of occurrence (% of fields where this species is found) and abundance (expressed as projective cover of this species in the field [in % to the field area]) where the occurrence of this species exceeded 20% with its abundance (projective cover) more than 15% (Tanskii et al., 1998).

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 area of distribution is based on the map from Volkov (1935). The northern limit of the area was adjusted according to the boundary of the forest zone. The southern limit of the area was adjusted according to the boundary of the forest-steppe zone. The areas of harmfulness were determined according to Nikitin (1983) and coordinated with the limits of the Arable Land Map (Koroljeva et al., 2003). The sites of sporadic distribution were determined according to the following sources: In the Far East (Kharkevich, 1988); In the northern regions of the European part of Russia and Siberia (Dorogostaiskaya, 1972), (Tolmachev, 1976); and in the Caucasus (Grossgeim, 1950). Data were then compiled through scanning and geo-referencing to develop a composite vector map. The biologist, together with the GIS specialist, drew a composite weed distribution area based on compiled data.

Reference citations:

Agaev M.G., ed. 1988. Main agricultural weeds in crops of the Leningrad Region. In: Catalogue of VIR world collection. Leningrad: VIR. N. 468: 112. (In Russian)
Dorogostaiskaya E.V. 1972. Weed plants of the Far North of the USSR. Leningrad: Nauka. 172 p. (In Russian)
Fomina Z.V. 1962. Weed plants of Buryatia and their control measures. Ulan-Ude: Publishing House of Buryatia. 76 p. (In Russian)
Grossgeim, A.A. 1950. Flora of the Caucasus. Moscow-Leningrad: AN SSSR. V. 4: 311. (In Russian)
Keller B.A., ed. 1934. Weed plants of the USSR. Leningrad: AN SSSR. V. 3: 448. (In Russian)
Kharkhevich S.S., ed. 1988. Vascular plants of the Soviet Far East. Leningrad: Nauka. V. 3: 421. (In Russian)
Komarov, V.L. & N.A. Bush, eds. 1939. Flora of the USSR. Moscow-Leningrad: AN SSSR. V. 8: 696. (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.].
Nikitin V.V. 1983. Weed plants of the USSR flora. Leningrad: Nauka. 454 p. (In Russian)
Tanskii V.I., Levitin M.M., Ishkova T.I., Kondratenko V.I. 1998. Phytosanitary diagnostics in integrated managemant of cereals. In: Novozhilov K.V., ed. Compendium of methodical recommendations in plant protection. Saint Petersburg: VIZR. 5-55 p. (In Russian)
Tolmachev, A.I., ed. 1976. Flora of North-East of the European part of the USSR. Leningrad: Nauka. V. 3: 296. (In Russian)
Ulyanova T.N. 1998. Weed plants in flora of Russia and other CIS countries. St. Petersburg: VIR. 343 p. (In Russian)
Volkov A.N., ed. 1935. Areas of distribution of the major weed plants in the USSR. Moscow-Leningrad: Publishing House of Kolchoz & Sovchoz Literature. 153 p. (In Russian)

Right and copyright:

Copyright on this map and description belongs to its authors.
All rights reserved. Copyright 2004© S.Yu.Larina & I.A.Budrevskaya.
The image is taken from the Internet - http://www.viarural.com.ar (Portal de Agricultura Y Granaderia Argentina) (copyright-free).
 

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