Distribution invazionnyh plants of 1st status on types of district of the Voronezh area
Unfortunately, on a number of objective causes it is not obviously possible to identify landscape priurochennost the big number of gathering. It speaks: uncertainty of a binding to district type; in the spatial extent of some habitats (an embankment Ry, roadsides of motorways, settlements), extending on two and more types of district; absence of co-ordinates of a habitat of a plant.
nevertheless, the general laws of distribution invazionnyh plants on district types in the Voronezh area are defined:
1) Elodea canadensis usually meets in akvalnom district type, however can seldom get and into the inundated. In inundated type of district usually meet Acer negundo, Ambrosia artemisiifolia, Bidens frondosa, Echinocystis lobata, Erigeron canadensis, Xanthium albinum. It speaks:
ecological properties;
) natural features of valleys of the rivers which act in a role of conductors alien bioty;
presence of the broken habitats that allows invazionnym to plants to get accustomed and be settled quickly in next ekotopy;
concentration of considerable number of settlements in valleys of the rivers. Settlements represent itself as "recipients" invazionnoj flora fraction, giving a wide spectrum of habitats, with others in comparison with zone, parametres abioticheskoj environment (selitebnye and industrial zones, agricultural grounds) (Adventivnaja flora..., 2004). On sklonovom and nadpojmenno-terrasovom district types invazionnye plants meet less often, than on the inundated. As well as inundated type of district, they differ erodirovannostju, developed sand meet places, and to sklonovomu to district type the network of fresh ravines (Milkov, 1977) is often dated. Concentration places invazionnoj flora fractions here become slopes and the bottom of ravines, the landslips which have become swollen grunty etc. On vodorazdelno-zandrovom type of district are marked all plants 1 - go the status though their occurrence is lowered. The most part of finds invazionnyh plants in considered type of district concerns the right coast of the Voronezh water basin - territories of city district of Voronezh. This territory differs a high level of scrutiny and duration of researches on it. On mezhdurechnom nedrenirovannom type of district from plants of 1 th status it is not registered Echinocystis lobata, and on plakornom and ostantsovo - water separate - Echinocystis lobata and Bidens frondosa.
On all types of district, except akvalnogo, were naturalized Acer negundo, Ambrosia artemisiifolia, Erigeron canadensis and Xanthium albinum. These kinds are natives of the North America, on territory of the Voronezh area have got about 100 years ago. All of them, except Xanthium albinum, by results of the comparative analysis kenofitov Northwest Russia, Average Russia, Ukraine and Poland are carried to «to a kernel invazionnogo a complex» (Vinogradova and
other, 2010).
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