Desert -- Desert Peoples
|Problems faced by desert peoples
If on the morning of a hot summer day, a healthy adult is placed in the middle of a desert without water for an hour, he will lose 0.9l of water by perspiring and he will be very thirsty. At the mid afternoon, he will lose about 5 to 8 kg of his weight. At night, if the daytime temperature is higher than 48.9oC, he may be dead. 3.8l of water a day is still not enough to save a man's life from the heat for a week.
Loss of salt
Through continuous sweating and intake of fresh water, the salt concentration in the body falls and causes severe cramping of muscles and headaches. Thus not only water , a source of salt is also essential.
To avoid the heat, people in deserts have to dress up carefully :
The long, flowing robes shield the skin from the sun and allow air to reach the body. The clothes are loose-fitting to prevent immediate sweat evaporation so that the body does not dehydrate so quickly in the very dry air. Headgear shields the head from the sun. Veils protect the face and keep the sand out of the mouth. The clothes also keep the people warm at night and in winter.
|There are three recognized classes of nomadism: hunter-gatherers, pastoralists and traders.|
|They move as small, independent bands within the area in which they know where are the waterholes, important trees, patches of smaller food plants and potential food animals. They move daily, monthly or semi-annually.|
|They move from place to place depending on the needs of their domesticated stock like sheep, goats or camels. Their targets are places with prolonged and predictable grass supply. Some of them may also hunt while others may cultivate an area near where they settle and grow cereal crops. They may also trade when they get a chance.|
| They are mobile merchants with
trains of pack animals like camels, asses, mules or yaks with them. They supply goods
produced on one side of the desert to the town people.
1999, ThinkQuest team 26634