Alpine plants (alpine vegetation)
Growth in Mountain
In general, the volume of small, hairy stems and leaves, and some also crawl growth or like a mat like shop on the ground, become the so-called "cushion plant".
Alpine plants brief introduction
"Cushion plants" is one of the typical shape of plant adaptation to alpine environment. They are in The Qinghai Tibet Plateau
altitude 4500 to 5300 meters high mountain area growth. Moss arenaria musciformis high 3 ~ 5 cm, individual high is only 10 centimeters, about 20 cm in diameter. A round cushion body as one of the sports equipment discus
Scattered in the mountains above the slope. Its streamlined (or discoid) affixed to the appearance and growth, can withstand strong winds blow and cold air invasion. In addition to its slow growth, small leaves, can reduce transpiration and save the consumption of water, in order to adapt to the harsh environment of mountain water shortage.
Alpine plants Growth habit
Most alpine plants and thick long and flexible roots, they are often interspersed with nutrients and water in the cracks between rocks and gravel or coarse soil, in order to adapt to the mountain soil and careless development and growth in cold and dry environment requirements.
The plateau region is rich in species, according to a rough estimate of the higher 10000 seed plant species, if the The Himalayas
The south area except has about more than 8000 kinds. But the difference of ecological conditions in the interior of the regional disparity, changes in the number of plant species was also significant. Such as the southeastern plateau Hengduan Mountains, from the foothills to the mountain valley from the mountain to the mountain top has a subtropical frost weathering zone of various types of vegetation, alpine flora is the world's most abundant species in the region, higher than 5000. In the plateau, with cold, dry climate of the plateau, the plant species decreased rapidly, such as higher seed plants in the Qiangtang plateau is less than 400, and then into the plateau of the northwest of Kunlun mountainous area, ecological condition is more harsh, which collected only hundreds of plant species. The northern part of the plateau Qaidam Basin
Although the low altitude to 3000 meters, but the climate is extremely arid, about 300 species of seed plants in the basin, and the surrounding mountains, more than 400 kinds of species, as for Xinjiang and Tibet at the junction of the Aksai Chin and Qinghai in northwestern Qaidam Basin is a large area of bare no vegetation area, can find plants fewer species. Obviously, number of plant species across the entire plateau area is more in the southeast and northwest, showing the obvious trend of decreasing.
Alpine plants Physiological characteristics
Its current alignment (or discoid) affixed to the appearance and growth, can withstand strong winds blow and cold air invasion. In addition to its slow growth, small leaves, can reduce transpiration and save the consumption of water, in order to adapt to the harsh mountain water shortage Environmental Science
Covered with white snow, may represent another type of alpine plants. Lotus growth at an altitude of 4800 to 5500 meters between the alpine cold weathering zone. Individual snow is not high, white woolly stems and leaves Misheng thick, can be cold, and insulation, strong radiation, but also reflects the mountain sunshine from harm, so this is the harsh alpine environment of a suit. Most alpine plants and thick long and flexible roots, they are often interspersed with nutrients and water in the cracks between rocks and gravel or coarse soil, in order to adapt to the mountain soil and careless development and growth in cold and dry environment requirements.
Alpine plants Main category
Plateau south-east of the forest flora in Himalaya, Chinese - based components, containing a large number of woody plants, composed of various types of forests, such as some evergreen species of Fagaceae, Theaceae and Lauraceae, representative species of Oak Plants and alpine coniferous forests, such as pine, fir and spruce pine Joe, variety Rhododendron, the distribution center is here. In the plateau on the Tibetan Plateau is the dominant component, it has a young, independent development history, there are many species or genera in plateau uplifts strongly ecological conditions rise gradually in the course of adaptation to cold and drought and developed. Typical plants such as Artemisia grass, sand, grass Stipa purpurea, Tibet Artemisia, cushion Ceratoides etc.. The Northwest Arid Plateau and Qaidam Basin region in Central Asia desert elements, such as Ceratoides, ephedra przewalskii, head of grass, Artemisia leaf, Salsola Glareosa etc.. The typical temperate and alpine components such as Jin Lumei, Cindy, Polygonum viviparum is widely distributed in the Highlands, often for composition of alpine shrub and meadow. Therefore, the flora on the Qinghai Tibet Plateau Area in the southern part of the classified ancient tropical flora, most belong to the Holarctic region. The south-east of Himalaya Chinese forest sub region, the scope of the northern Qaidam Basin belongs to the Asian desert sub region, and in the interior of the hinterland is a unique plateau plant area.
Alpine plants geographical distribution
According to the geographical composition of plant species, the Tibetan high There are also significant differences in different regions around the original. The southern margin of the Tibetan Plateau, East and south of Himalaya low altitude area is the ancient tropical flora, dominant tropical geographical elements, each is contained within the species is less, at the northern edge of that ancient tropical flora, tropical Asian elements, mostly ancient origin. Such as the three Cephalotaxaceae India three sharp cedar, Gnetaceae montanum Hamamelidaceae Altingia, Dipterocarpaceae of Jie Broshan.