Geography. Why is it said that the altitude is high and the vegetation is luxuriant?

High altitude. Plenty of light (high altitude, close to the sun).

Plenty of heat (note here that light is not the same thing as heat), plenty of water (ice and snow at high enough altitudes, and even glacial meltwater to feed the soil), and deep soil (see above).

The vertical zonality is significant.

The altitude is high, the temperature is low, why the vegetation can still flourish,

Plant types at different altitudes are the vertical structure of the community.

Vertical structure is the phenomenon of vertical differentiation or layering of communities in space. The plants in the community have their own growth patterns, and their ecological amplitude and adaptability are different, they each occupy a certain space, and their assimilation and absorption organs are located at different heights above ground and at different depths underground, or at different depths below the water surface. This spatial vertical configuration of them forms a hierarchical or vertical structure of the community.

There are two meanings for the "vertical distribution of plants":

First, there is vertical stratification in the community.

Second, it is vertically distributed with the altitude gradient.

The ecological factors affected by the two are as follows:

The environmental factors that determine the stratification of the aboveground part are mainly light, temperature, humidity and air.

Environmental gradients generally include factors such as altitude, temperature, humidity, soil, wind and light, and in the case of animal communities, vegetation gradients.

If altitude is not counted as an ecological factor (direct factor). The main ((most) reason for the vertical distribution of alpine (hillside) plants is temperature.

The main (most) reason for vertical stratification (vertical distribution) in a community is: sunlight.

Hello: Plateau mountain climate refers to the plateau areas in the middle latitudes, such as the Qinghai-Tibet Plateau, the Andes, Mount Everest and other regions, due to the high altitude, low temperatures all year round, forming a plateau mountain climate. There are two most important characteristics of the mountain climate of the plateau:

The terrain is high"with"The temperature is cold"。

The vertical distribution of climate, which leads to biological diversity, is a very special type of climate, and other climates are affected by latitude, while the plateau and mountain climate is not, it is affected by the topography, especially the altitude.

With the altitude from high to low, the vegetation also changes, alpine meadows, alpine shrub forests, alpine coniferous broad-leaved mixed forests, etc.!

Hope it helps!

On the earth, from the water to the land, and then to the mountains of more than 5,000 meters, it is the living range of plants. The higher you go, the fewer species of plants there are. In general, below 3,000 meters above sea level, the plant species are the most numerous; Above 3000 meters, mainly small shrubs and herbaceous plants; Above 4,000 meters, there are very few species; Above 5000 meters, only a very small number of hardy plants are able to grow. Why is it that the higher the mountain, the fewer plants there are? Scientists point out that for every 100 meters of altitude gain, the temperature decreases by a certain temperature, so the higher the mountain, the lower the temperature.

In that icy and thin environment, ordinary plants cannot survive, and only those that are particularly hardy can adapt.

Because the higher the altitude, the lower the temperature, the harsher the environment.

Because the higher the altitude, the drier and colder it gets.

The high altitude and low temperature, large temperature differences, short high temperature periods, precipitation, and less water retention in the soil lead to slow plant growth.

Because the higher the altitude, the lower the temperature, it is difficult for plants to adapt to this environment.

The higher the altitude, the poorer the soil and the lower the temperature.

The soil is much more fertile at the high bottom, the wastewater flows downward, and the alpine soil is thin and poor.

The higher the altitude, the lower the temperature, the UV rays are strong, and the environment is not suitable for plant growth.

Because of the high altitude, the environment is not suitable for plant growth.

Temperature is the main factor, but another factor is wind.

Because the altitude is too high, the temperature is very low.

The first problem is that the higher the altitude, the lower the temperature, the reason: ground radiation is the most important direct heat source of the near-surface atmosphere, and the farther away from the ground, the less ground radiation is received, and the lower the temperature.

The second question: the terrain and the altitude are the same, for example, a certain place is high, it can also be said to be high. There are also differences, for example, the topography of a place is high in the west and low in the east, generally not to mention the altitude characteristics, here the topography is a proper noun.

The vertical distribution of climate, biological diversity, is a very special type of climate, other climates are affected by the level of latitude, but the plateau mountain climate is not, it is affected by the topography, especially the altitude.

Atmospheric pressure decreases exponentially with increasing altitude. Under clear sky conditions, the direct solar radiation intensity during the day and the effective radiation intensity at night in the alpine without snow cover increase with altitude. Due to the different slope directions, the solar radiation received by the sunny and shady slopes is different, which affects the distribution of air temperature and airflow.

The temperature decreases with altitude. In general, the vertical decline rate of temperature is the largest in summer and the lowest in winter. The influence of the direction and slope direction of the mountain range on the air temperature is mainly manifested in the difference of air temperature between the two sides of the mountain range and leads to different climatic phenomena.

The temperature on the sunny slope is high and varies greatly, while the temperature on the shady slope is low and the change is small. The diurnal and annual temperature ranges of the summits and slopes are relatively small, and the autumn temperature is higher than the spring temperature, and the diurnal and annual temperature ranges of the valleys and intermountain basins are relatively large, and the spring temperature is higher than the autumn temperature.

The amount of precipitation and the number of precipitation days increase with the altitude of the mountain. In mountainous areas above a certain altitude, precipitation decreases with altitude due to the decrease in water vapor content in the air flow. The height at which the precipitation reaches its maximum is called the maximum precipitation altitude.

The influence of slope aspect on rainfall is that the rainfall on the windward side is more than that on the leeward side. Especially on both sides of the tall mountain ranges, the large difference in rainfall causes great changes in the vegetation landscape. For example, the south-central part of the Cordillera Mountains on the west coast of North America is in a temperate westerly zone, with forested landscapes on the windward west side and desert or semi-desert landscapes on the leeward east.

Mountain topography also influences diurnal variations in rainfall. In general, the top of the mountain range is dominated by day rain, while the valley basin is dominated by night rain.

Wind speed increases with mountain elevation. Wind speeds are high at mountain tops, ridges, and canyon outlets, and low at basins, valley floors, and leewards. The wind speed in the high mountains is generally high at night, light during the day, and the lowest in the afternoon, while the opposite is true in the foothills and valleys.

Mountains can also produce some local circulation, such as valley winds, bula winds, foehn winds, slope winds, glacial winds, etc.

In terms of humidity (water vapor pressure and relative humidity), water vapor pressure decreases with increasing altitude. In most cases, the upper part of the mountain has a higher relative humidity than the lower part due to low temperature and more clouds, but the opposite is also true in the high mountain area in winter, where the top of the mountain has less clouds and fog and less relative humidity in winter. The relative humidity of valleys and basins varies greatly from day to day, with high nights and low days, and the lowest in the afternoon.

The day-to-day variation in relative humidity at the summit is generally small.