Weeds
Area of distribution and weediness of Lamium purpureum L.
Object description Download GIS-layers
Authors:
Object specialist T.D. Sokolova, GIS-specialist I.A.Budrevskaya.Date of creation:
24.05.2004.Scale:
1:20 000 000.Accuracy of the map:
It is created on materials of maps of natural scale 1:5 000 000 - 1:80 000 000 and on literature data.Projection:
"Alber's Equal Area Conic" USSR, 9, 1001, 7, 100, 0, 44, 68, 0, 0.Basic contents:
Vector map. Area is shown by polygons (main distribution) and by dots (sporadic distribution). Zone of weediness is shown by polygon.Accuracy of the classifier:
Within the weed area the zones of main and sporadic distribution, and the zone of weediness, where L. purpureum is a pernicious weed, are shown.Procedure of map drawing:
Areas of main distribution, sporadic distribution and weediness are established according to the analysis of the open-published maps and literature. The area of L. purpureum is based on the map taken from Hulten E. & Fries M. (1986). Limits of the zone of weediness are established according to Nikitin V.V. (1983), specified in accordance with data on abundance and frequency of the species occurrence, which are taken from below mentioned references, and adjusted with the limits of arable lands. In accordance with data of Nikitin V.V., L. purpureum is characterized by great frequency of occurrence in crops in the south and middle taiga zone of the European part of the former USSR.Sources of the data:
Dorogostayskaya, E.V. 1972. Weed plants of the Far North of the USSR. Leningrad: Nauka. P. 131-132 (in Russian).Grossgeim, A.A. 1967. Flora of the Caucasus. V. 7. Leningrad: Nauka. P. 360 (in Russian).
Hulten, E. & Fries, M. 1986. Atlas of North European Vascular Plants, North of the Tropic of Cancer: Konigstein. V. 1-3. 1172 p.
Karavaev, M.N. 1958. Synopsis on Yakutian flora. Moscow-Leningrad: AN SSSR. P. 156 (in Russian).
Kucherov, E.V., ed. 1966. Keys to plants of Bashkirian ASSR. Moscow-Leningrad: Nauka. P. 364 (in Russian).
Nikitin, V.V. 1983. Weed plants of the USSR flora. Leningrad: Nauka. P. 309 (in Russian).
Shishkin, B.K., ed. 1963. Botanical atlas. Moscow-Leningrad: Izd-vo sel'skokhozyaistvennoi literatury, zhurnalov i plakatov. 504 p. (in Russian).
Tolmachev, A.I., ed. 1977. Flora of Northeast of the European part of the USSR. V. 4. Leningrad: Nauka. P. 88 (in Russian).
Ulyanova, T.N. 1981. Weed plants in wheat of the USSR. In: Korovina, O.N., ed. Catalogue of VIR world collection. Issue 320. Leningrad: VIR. P. 50 (in Russian).