Characteristics of the physical and geographical elements of the desert 5

The plants in the desert area are not only low and sparse, but also characteristic of arid areas. In order to adapt to the arid climate, their leaves are shrunk into small or rod-like and thorn-like, like Saxona and S. saga. Shagui jujube is native to the weak water banks of the Hexi Corridor The yellow and white flowers bloom in the moon, wafting the fragrance of osmanthus.

It is a nectar source plant, jujube is edible, the leaves are fodder, the trunk can be used as a variety of utensils, and it is a good tree species for sand control and field protection. In some plants, the stomata sink and the cuticle thickens in order to reduce transpiration; Other plant vegetative organs become fatty and fleshy to store water on their own. In order to resist the strong sunlight in summer, the surface of the branches of many plants turns white or grayish-white, such as Baici, Saxon, etc.

In order to absorb the only little water in the sand layer, their root system is particularly developed, and as far as possible to stretch deep underground, and grow a lot of lateral roots to expand the water absorption area, such as tamarix, camel thorn, sand canopy jujube, etc., they are only three or four meters high in the aboveground part, but their taproot can reach more than 20 meters.

The lack of animal feed and rain in the desert, coupled with intense sunlight, high temperatures and huge evaporation, makes it difficult for many common animals to survive, but there are some unique animals that live well in the desert. In order to adapt to arid environments, desert animals have physiological prerequisites for being good at retaining fluids, minimizing water loss, and being able to tolerate hunger and thirst. The camel, known as the "Ship of the Desert", is one such animal with a special body structure, it has a hump for storing nutrients, and many small nests of water grow on the stomach wall, which can store a large amount of water; It also has a stomach that can regurgitate, its four hooves are like a soft cushion, it is not afraid of sand rubbing, and its nostrils can be closed at will to block the wind and sand; It also has a good pair of eyes, double eyelids, long eyelashes, and is a gateway to resist flying sand.

Camels are particularly resistant to hunger and thirst, and can go days without water or food. When encountering all kinds of thorny shrubs and dried herbs, which other animals cannot eat, the camel can swallow them, and when it is time to rest, they bend their legs and lie down, and then turn the food they have swallowed up their necks, and begin to chew calmly, and then swallow it into the second stomach. It is precisely because of its physiological characteristics that it is the best means of transportation in the desert.

A camel can carry 150,250 kilograms and can travel 30,40 kilometres a day, so the camel retains its unique function, regardless of the extensive use of the car in desert areas.

The geographical environment characteristics of each area are as follows: 1. Drought and water shortage. 2. The temperature change is very strong, the maximum temperature difference can reach 30 in one day, and the maximum temperature can reach 58.

3. The wind and sand are raging, not only the wind is strong, the mold beam also lasts for a long time, and the wind above the fifth or sixth level is very frequent, and it is several days to blow. 4. Yumeng food is relatively scarce, plants are very scarce, generally speaking, only the town yard bridge has sparse shrubs. 5. The desert environment is loose, mostly sandy soil, a small part of the distribution of oases, the plants are mainly drought-tolerant coniferous shrubs and herbs such as cacti, and the animals are probably scorpions, mice, snakes, lizards, etc., which have strong adaptability to the environment, and the desert edge environment is mainly mixed with sand and loam, and the number and variety of animals and plants are more than those of the desert.

Hello, the Sahara Desert is a vast desert located in West Africa, it is the largest tropical desert in the world, with an area of more than 90 million hectares, the natural geographic system structure and functional integrity characteristics of the Sahara Desert are mainly as follows:1Terrain:

The Sahara Desert is mainly composed of deserts, sand dunes, sand depressions, sand bars, etc., of which deserts account for the vast majority, the surface of the desert is mostly flat, the distribution of sand dunes is less, the sand dunes are relatively sparse, and the sand bars are less. 2.Climate:

The climate of the Sahara Desert is characterized by high temperature, strong sunshine and less precipitation, the average temperature of the whole year is above 20, the temperature in summer can reach more than 45, the temperature in winter can be as low as below 0, the annual precipitation of the socks is only about 50 mm, the sunshine time is long, and there are more than 300 days in a year that are cloudless. 3.Vegetation:

The vegetation types of the Sahara Desert are mainly shrubs and herbaceous plants, with sparse vegetation distribution and a wide variety of plant species, and the vegetation coverage rate is only 2% 3%, and the vegetation types are mainly shrubs and herbaceous plants, with a wide variety of plant species, and the vegetation coverage rate is only 2% 3%. 4.Animals:

There are many kinds of animals in the Sahara Desert, most of which are desert animals, such as antelopes, camels, wild asses, African elephants, beavers, etc., and some temperate animals, such as wild boars, hares, pheasants, etc. In addition to the above-mentioned structural and functional integrity characteristics of the physical geographic system, the Sahara Desert also has some special ecological environments, such as the Sahara.

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The answer you are looking for: The landscape characteristics of desert tourism resources mainly include the following aspects: 1

Dune landscapes: Sand dunes are one of the most representative landscapes in desert areas, characterized by different shapes, undulating heights, and colorful landscapes. Activities such as walking, climbing, and sandboarding on sand dunes have become one of the main experiences of desert tourism.

2.Rock landscape: The rock landscape in the desert area is also one of its unique landscapes, with different forms, some of which are shaped like human faces, animals, etc., and some of which show peculiar natural forms, which are very ornamental.

3.Peculiar vegetation landscape: The vegetation in the desert area is often turned like a creature adapted to a special environment, such as cacti, desert rose, etc., they grow in extreme environments, with different forms, colorful colors, and great ornamentation.

4.Weathered landforms: Weathering in desert areas is one of the reasons for the formation of its unique landscapes, such as weathered fossils, wind erosion caves, etc., which add mystery and bizarre colors to desert tourism.

5.Special celestial landscapes: Due to its special climatic conditions, special celestial landscapes often appear in desert areas, such as sunrise, sunset, starry sky, sandstorms, etc., which bring a unique visual experience to desert tourism.

In general, the landscape characteristics of desert tourism resources are mainly characterized by their uniqueness, singularity, mystery and beauty, which provide tourists with unique experiences and feelings.

There are many sunny days, strong sunshine, dryness, hot summer, large temperature difference between day and night, many winds and sand, dry summer and wet winter, etc. The key is dry: because of dryness, there are fewer clouds and rain, more sunshine, and stronger sunlight; Because it is dry, there are no clouds in the sky, it cannot block part of the sun, there is no moisture on the ground, it cannot evaporate and cool, and the heat of the sun on the ground is all used to heat the earth and air, so the temperature in summer is very high, and the temperature difference between day and night is particularly large; Because of the dryness, very few plants grow on the ground.

There are many sunny days, strong sunshine, dryness, hot summer, large temperature difference between day and night, many winds and sand, dry summer and wet winter, etc. The key to this is dry. Because it is dry, there are few clouds and rain, more sunshine, and stronger sunlight; Because it is dry, there are no clouds in the sky, it cannot block part of the sun, there is no moisture on the ground, it cannot evaporate and cool, and the heat of the sun on the ground is all used to heat the earth and air, so the temperature in summer is very high, and the temperature difference between day and night is particularly large; Because of the dryness, very few plants grow on the ground.

The high temperature on the surface of the desert makes the temperature difference between the upper and lower levels of the air layer close to the ground very large. The distribution of the temperature above the cool and hot at the bottom of the air layer can reflect the distant scenery in front of the traveler, which is called a mirage in meteorology, commonly known as a mirage. Therefore, travelers in the desert often see a blue lake in front of them, but in fact it is a reflection of the distant sky, which makes them rejoice.

On the black asphalt road in the summer afternoon, we can often see a pool of blue water on the road in front of us, and when we get closer, it is gone, and it moves to the front. This is also the ** mirage on the road.