中昆仑山北坡及内部山原的植被类型

 中昆仑山西始乌鲁乌斯河，东迄安迪河，东西迤逦600余公里，平均海拔高度6000m。该区有野生种子植物52科，211属，398种。植物区系以种类成份单纯、地理成份复杂为特征。北坡中山带和高山带下部年降水量300—500mm，草原带发育完整，尤以中段的策勒山地草原发育最好。草原带以上高寒荒漠不存在，高寒草甸则有一定发育。中昆仑山北坡植被类型的垂直带谱是：1)山地荒漠，自山麓线多在2200—2500m，个别在3000m；2)山地荒漠草原在3000—3200m；3)山地真草原在3200—3600m；4)高寒草原在3600—3800m(阳坡上升到4200m以上)；5)高寒草甸在3800—4200m；6)高山垫状植被仅见于东段山地和高寒草甸复合分布；7)高山流石坡稀疏植被在4200—5000m。中昆仑山内部山原极端寒冷干旱，多为砾漠所占据，高寒荒漠和高寒荒漠草原呈片状星散分布。

VEGETATION TYPES ON NORTHERN SLOPES AND THE INTERIOR OF CENTRAL KUNLUN MOUNTAINS

The Central kunlun Mountains, starting from the wulus River in the west to the Andi River in the east, stretching more than 600 km, has an average elevation of 6000 m. Wild seed plants growing in the area are classified into 52 families, 211 genera and 398 species, the flora characterized by purity of floral composition and complicated geographical factors. On its northern slope, the precipitation of the mid-mountain zone and the lower-alpine zone ranges from 300–500 mm and the steppe zone is well developed, especially the steppe zone of the Cele Mountain region (middle section of the Central Kunlun Mountains) is best developed. Above the steppe zone there is no alpine desert, but alpine meadow.The vertical zonal distribution of the vegetation type on the northern slope are as follows. 1. Mountain desert, starting from the piedment line (mostly 2200 m or 2500 m) to 3000 m. 2. Mountain desert steppe 3000—3200 m. 3. Mountain typical steppe, 3200–3600 m. 4. Alpine steppe, 3600–3800 m (sunny slope up to over 4200 m). 5. Alpine meadow, 3800 –4200 m. 6. Alpine cushion vegetation found only in the eastern section and where in combination with the distribution of alpine meadow. 7. Sparse vegetation on alpine flowstone slope, 4200–5000 m.The interior of the Central Kunlun Mountains is extremely clod and dry, and mostly covered by deserts of gravels, where alpine deserts and alpine desert steppes appear in tracts dotting the mountain range.