Natural vegetation
1, spruce forest
2, Mawei forest
3, Yunnan pine and Simao pine forest
4, fir, spruce, hemlock forest
5, Quercus variabilis, Quercus acutissima and Picea grove
6, river desert, sand poplar forest
7, combined with cypress wood of elm trees, fragrant, Castanopsis mixed forest and vines with thorn irrigation from
8, evergreen oak, deciduous broad-leaved trees, hemlock mixed forest
9, Castanopsis, Castanopsis, Colin
10, Castanopsis, India and Castanopsis Schima superba
11, high mountain oak forest
12, evergreen broad-leaved rain forest
13, large white rhododendron, crow fruit, thick skin incense, iron bushes and Yunnan pine combination
14, rhododendron shrub
15, alpine willow, gold Lu Mei, ghost see worry shrub
16, prune decorated, point to plum-like vegetation
17, co-head grass low mountain desert
18, the lute firewood desert
19, salt claw claw rock desert
20, membrane fruit ephedra, wood dam Wang, Calligonum jujube gravel desert
21, Artemisia selengensis, Artemisia desert
22, Calligonum desert
23, strange Liu desert
24, Suo Suo, Membrane fruit Mahjong gravel desert
25, Ceratoides, Zang Yaju sand desert
26, mountain Stipa krylovii grassland
27, Stipa breviflora small yellow grassland
28, mountain Desert Stipa, low semi-shrub grassland
29, Stipa, miscellaneous grassland
30, Stipa purpurea grassland
31, different Stipa, cushion Ceratoides grassland
32, with thorn date, Acacia twist Huang Mao, citronella grassland
33, reed, Apocynum, camel thorns and weeds combined with shrubs grass, miscellaneous grass salt meadow
34, humilis meadow
35, Carex, humilis meadow
36, salt grass, miscellaneous grass, humilis meadow
37, Carex, humilis swamp
Agricultural Vegetation
38, spring wheat, millet, potatoes, beets, flax
39, barley, spring wheat, peas, potatoes, rape
40, winter wheat, corn, millet, sorghum, sweet potato, cotton, peanuts, apples, pears, dates, persimmon, grapes, chestnut, walnut
41, winter wheat, corn, sorghum, cotton, grapes, cantaloupe, pear, apricot
42, rice, winter wheat, sweet potato, miscellaneous grains, peanuts, citrus, sugar cane, tung tree, mulberry
No vegetation area
1, salt shell
2, the desert
3, the Gobi
4, mountain peak gravel
5, snow, glaciers
Vegetation Soil Area in
Ⅰ temperate desert steppe calcareous soil calcareous soil zone
Ⅱ warm-temperate dryland steppe
Ⅲ warm - temperate deciduous broad - leaved forest
Ⅳ Northern subtropical evergreen deciduous broad - leaved mixed forest brown soil zone
Ⅴ in the subtropical evergreen broad-leaved forest red, yellow soil zone
Ⅵ arid mountain vegetation soil vegetation vertical zone
Ⅶ arid desert gray desert soil brown desert soil zone
Ⅷ desert areas
Ⅸ subalpine forests and meadow areas
X subalpine steppe zone
Ⅺ alpine steppe zone
Ⅻ alpine meadow zone
Sanjiangyuan Nature Reserve is located in the hinterland of the Qinghai-Tibet Plateau, south of Qinghai Province, bordering the southwest and the Tibet Autonomous Region, adjacent to the eastern Sichuan Province, Qinghai Province and the northern Mongolian Tibetan Autonomous Prefecture Dulan County phase. The total area of 366,000 square kilometers, including 17 counties and cities, accounting for 43.88% of the total land area of Qinghai Province, the total population of 557,200, mainly Tibetan residents. Sanjiangyuan Nature Reserve is the largest nature reserve in China, and is also the most concentrated area and ecologically sensitive area in the high altitude area of the world. August 19, 2000, in order to protect the natural resources of the Three Rivers, the Sanjiangyuan Nature Reserve Monument officially unveiled, it also marks the Sanjiangyuan Nature Reserve was formally established.
The Sanjiangyuan nature reserve is the hinterland and main body of the Qinghai-Tibet Plateau. The mountainous terrain is dominated by the mountainous terrain. The terrain is high and the terrain is complex. The elevation is 3335-6564m. The lowest elevation lies in the Jinshajiang River in the southeast of Yushu Tibetan Autonomous Prefecture. The average elevation of 4400m or so. Altitude of 4000 ~ 5800m high mountain is the main skeleton of the protected area landscape.
The climate in Sanjiangyuan Nature Reserve is a typical plateau continental climate characterized by alternation of hot and cold seasons, with distinct year of dry and wet seasons, small annual temperature difference, large daily temperature difference, long sunshine duration, strong radiation, There are no four seasons to distinguish the climate characteristics.
The annual average temperature is -5.6 ~ 3.8 ℃. The hottest month in July the average temperature of 6.4-13.2 ℃, extreme maximum temperature of 28 ℃; the coldest month in January -6.6 ~ -13.8 ℃, the extreme minimum temperature of -48 ℃. The average annual precipitation is 262.2 ~ 772.8mm, of which 6 - September precipitation accounts for about 75% of the annual precipitation, while the proportion of night rainfall is 55% ~ 66%. Annual evaporation in the 730 ~ 1700mm between.
The soil of the Sanjiangyuan Nature Reserve is a mountainous - terrestrial system in Qingnan Plateau. Since the geological development of the Qinghai-Xizang Plateau is light and the glaciation from the Quaternary glaciation is not long, the modern glacier has more distribution, so far the crust is still rising, and the ecological conditions of the alpine ecosystem are strengthened continuously, resulting in weakening biochemical process , The physical effect of enhanced soil film forming the original matrix, soil into a short time, most of the soil thickness of thin, coarse texture, poor water retention, low fertility, and susceptible to erosion caused by soil erosion.
Due to the influence of geologic movement, the elevation of the source area of the Three Rivers is very different, and the mountainous area is higher and the relative elevation is higher, and the vertical distribution of soil is obvious. Alpine meadow soil, alpine steppe soil, mountain meadow soil, gray cinnamon soil, chestnut soil and mountain forest soil, with the altitude from low to high, Main, swamp meadow soil is more common, frozen soil is extremely developed.
Qinghai-Tibet region vegetation types and vegetation soil area
Comment list ( 0 )
