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The vegetation of Pakistan varies with elevation, soil type, and precipitation. Forests are largely confined to the mountain ranges in the north, where coniferous alpine and sub alpine trees such as spruce, pine, and deodar cedar grow. The southern ranges of the Himalayas, which are of lower elevation, receive heavy rainfall and have dense forests of deodar, pine, poplar, and willow trees. The more arid Sulaimān and Salt mountain ranges are sparsely forested with a type of mulberry called shisham, a broad-leaved, deciduous tree. Dry-temperate vegetation, such as coarse grasses, scrub plants, and dwarf palm, predominates in the valleys of the North-West Frontier Province and the Baluchistan Plateau. The arid western hills are dotted with juniper, tamarisk (salt cedar), and pistachio trees. The area of Ziārat, Baluchistan, has juniper forests that are believed to be 5,000 years old; however, they are dwindling due to deforestation. Dry-tropical scrub and thorn trees are the predominant vegetation in the Indus River plain. Known as rakh, this vegetation is native to the region and can survive temperatures higher than 45°C (113°F). Riverine forests, found in the Indus floodplain, require six weeks of monsoon flooding to sustain them during the dry months. Irrigated tree plantations are found in Punjab and Sind. Mangrove forests in the coastal wetlands are an integral part of the marine food chain.

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15y ago

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