☰ Contents · Geography

Foothill, mountain and highland plants; the animal world

Lessons 28–29 · 2 lessons · P. Gulomov, H. Vahobov, P. Baratov, M. Mamatqulov. Geography (Physical Geography of Central Asia; Physical Geography of Uzbekistan), Grade 7. Revised and expanded 5th edition. “O‘qituvchi” Publishing House, Tashkent, 2017
28

Foothill, mountain and highland-pasture plants

Textbook: pp. 62–63
GoalKnow the plants of the foothill, mountain and highland belts and relate them to height and climate.
New words
foothill zone (adyr) · adirforest and shrub vegetation · o‘rmon-buta o‘simliklarisubalpine meadows · subalp o‘tloqlarialpine meadows · alp o‘tloqlari
Explanation

Adyrs are a transitional zone between desert and mountains, foothill ridges from about 500–700 to 1200–1600 m above sea level. They have many plants that develop quickly in spring, such as sedge (rang) and bluegrass (qo‘ng‘irbosh), plus wheat-grass and red wormwood, and shrubs like pistachio and almond on stony places. The mountain belt runs from about 1200–1500 to 2800–3000 m; it is cooler than the adyr (the July mean does not exceed 17–19°C) and wetter (600–800 mm, in places up to 1000 mm of precipitation). The lower part has mountain-steppe grasses and rose-hip thickets, higher up are forests of juniper, maple, walnut, wild apple and cherry; in the northern Tien Shan at 2000–2800 m there are coniferous spruce forests. Places above about 2700–2800 m are occupied by highland pastures, subalpine and alpine meadows, where summer is short and cool, winter cold and snowy, and the grasses are low but their flowers are colourful.

Worked examples
On the western slopes of the Zarafshan and Gissar ranges wild apple, walnut and juniper forests are common because these slopes receive more precipitation.
In summer herders take sheep and cattle to the high mountain pastures and bring them down to lower belts in winter.
Class activity

“Know the leaf”: the teacher shows picture cards of mountain plants (juniper, rose hip, walnut, pistachio); students say which belt each belongs to. In nature never taste anything to identify it.

Practice
1
At what height does the adyr lie?
2
Which trees and shrubs grow in the mountain belt?
3
If the highland belt starts at 2700 m and the summit is 3700 m, how many metres wide is the belt in height?
4
Why are highland grasses low-growing but have large, colourful flowers? Suggest a reason.