Что такое findslide.org?

FindSlide.org - это сайт презентаций, докладов, шаблонов в формате PowerPoint.


Для правообладателей

Обратная связь

Email: Нажмите что бы посмотреть 

Яндекс.Метрика

Презентация на тему Wildlife of the Don Land

Created:Koroleva AlinaLopatko Larisa
Wildlife of the Don Land!!! Wildlife of the Don Land!!!! As a result, the original steppe landscape has irrevocably vanished in the mists of time. Those steppe areas once located at the flatlands and watersheds, are now The natural forest vegetation of the Don Land has undergone a significant However those later attempts aimed at artificial forest-growing, enabled to raise the As an example, one can mention birds as the best studied animal However, just during the last two or three decades, not less than The above situation is typical for Don steppe mammals as well. From The history of the Don-land wildlife convinces us that the maintenance of
Слайды презентации

Слайд 2

Created:
Koroleva Alina
Lopatko Larisa
Tutor:
Solodilova V.N.,
the teacher of English

Слайд 3 Wildlife of the Don Land!!!!

Wildlife of the Don Land!!!!

Слайд 4 As a result, the original steppe landscape has

As a result, the original steppe landscape has irrevocably vanished in the mists of time.

irrevocably vanished in the mists of time.


Слайд 7 Those steppe areas once located at the flatlands

Those steppe areas once located at the flatlands and watersheds, are

and watersheds, are now totally tilled and sown with

wheat, maize, sunflower, thus making about 60% of the Region`s land.

Слайд 8 The natural forest vegetation of the Don Land

The natural forest vegetation of the Don Land has undergone a

has undergone a significant transformation. The pineries originally growing

at the sandy soils of the Middle Don Land, say, have been completely annihilated, while the total forested area by the middle of the 19th century was reduced to 2.4%.

Слайд 10 However those later attempts aimed at artificial forest-growing,

However those later attempts aimed at artificial forest-growing, enabled to raise

enabled to raise the woodiness of the Rostov Region,

as to re-establish local pineries, to create absolutely new and original biocenoses in the shelterbelts of the dry steppe lands. This resulted in steppe climate moderation, yield increase, appearance of a large number of previously absent north forest kings of animals in the Region.

Слайд 11 As an example, one can mention birds as

As an example, one can mention birds as the best studied

the best studied animal group of the Rostov Region.

During the 200 years period of ornithological research, 329 bird species, 219 nesting species among them, have been registered at the lower Don areas. However in the 19th and early 20th centuries totally vanished from the nesting fauna of the Rostov Region were not less than 8 species, including the war eagle, the peregrine, the black cock.

Слайд 13 However, just during the last two or three

However, just during the last two or three decades, not less

decades, not less than 30 species have moved to

our places, there species representing both originally southern, north-moving birds, and cold-temperature, south-moving ones.


Слайд 15 The above situation is typical for Don steppe

The above situation is typical for Don steppe mammals as well.

mammals as well. From out of 87 species of

mammals registered at the territory of the Rostov Region in the tarpan, petered out is the saiga, significantly reduced in number are long-eared urchins, fitchews, otters, marmots. Even susliks, have almost completely vanished by now.

Слайд 19 The history of the Don-land wildlife convinces us

The history of the Don-land wildlife convinces us that the maintenance

that the maintenance of great biological diversity of both

the natural and artificial ecosystems which provides their stability, is completely to the best of our common interests.


  • Имя файла: wildlife-of-the-don-land.pptx
  • Количество просмотров: 120
  • Количество скачиваний: 0