Cold temperate zone
Cold temperate zone is the annual average temperature is below 0 DEG C, the average temperature at the hottest areas of higher than 10 DEG C. The distinction lies in the boreal and Arctic average temperature in the hottest month of less than 10 DEG C. This temperature is also known as" Subfrigid
Cold temperate zone
Cold temperate zone geographical position Siberia
Most of the area in China and the northern part of Heilongjiang province belongs to cold temperate zone.
Cold temperate vegetation
Located in Northeast of the Inner Mongolia Autonomous Region in northern Heilongjiang, china.
The representative crops are: wheat, barley, potatoes,
About in the north and south boreal (66.5 ~ N, 66.5 ~ S) near offset Mid latitude
Cold temperate zone introduce
Temperature less than 1600 DEG C area. In cold temperate coniferous forest
Is composed of cold resistant evergreen or deciduous coniferous tree species, for our country wide distribution area, abundant resources of forest types. Mainly by the Spruce
Genus and some hardy pine and Sabina chinensis
The composition of the genus. It is a cold temperate zone Greater Khingan Range
The zonal vegetation types in northern area. The coniferous forest can adapt to the cold, wet or dry climate conditions, they are often on the line of forest distribution limits. The cold temperate coniferous forest can be divided into two categories: one for the cold temperate deciduous coniferous forest, the other one is cold temperate evergreen coniferous forest, there are also squirrels live.
Cold temperate zone The distribution of plants
Cold temperate evergreen coniferous forest composed of evergreen spruce, fir, pine and juniper. Our country belongs to the Picea and Abies forests on the mountain vegetation vertical belt, widely distributed in the northeast, North China, Pakistan, Mongolia and Qin Qinghai Tibet
Plateau. Spruce and fir forest with strong shade tolerance, dense canopy, canopy and understory light is very weak, also known as the "dark coniferous forest". Species composition of tree layer is relatively simple, usually made of spruce and fir species composition of pure forest, or a mixed species of pine, hemlock tree, sometimes growing part of tree species. Such as larch, birch, poplar
. Common shrub roses, honeysuckle, maple, chokecherry etc.. The herbaceous plants for shade plants, such as Oxalis, Mountain Dew grass, mountain top. Leng Shanlin, the spruce moss layer is relatively developed, not only covers the ground, but also in the trunk and branches are moss.
Cold temperate zone Component
Cold temperate deciduous coniferous forest is composed of a variety of winter deciduous leaves of Larch Pine forest
, also known as the bright coniferous forest, North Mountain and dry cold climate the most representative vegetation. Ochiba Matsukiko, cold resistance, strong adaptability, in Greater Khingan Range, from the river banks, marsh, pond ditch to the hillside and hilltop were distributed, forming a vast expanse of forest. Straight, tall trees, the canopy is sparse, often forming a large area of pure forest, which include a small amount of spruce, fir and birch. Because of the type of canopy light so the shrub and herbage are abundant, there are various shrubs rose, honeysuckle, Spiraea, Ribes and deutzia. Herb ferns, Thalictrum
Burnet, and Saussurea
. stay Swamp
The distribution of soil on the larch forest to shrub ledum palustre
, bilberry and willow is common. The degree of development of forest moss layer are determined by humidity conditions.