The influence of climate on rivers
I. Analysis
1. Water supply types affecting rivers
The outflow rivers in humid and semi-humid areas are mainly supplemented by rainwater; Inland rivers in arid areas are mainly replenished by melting water of ice and snow.
2, affecting the hydrological characteristics of rivers.
From the point of view of temperature, the seasonal variation characteristics of inland river runoff depend on the temperature change; Temperature is related to the length of the ice age of the outflow river. The average monthly temperature 1 >: subtropical and tropical rivers with 0℃ have no ice age, and rivers with1monthly temperature lower than 0℃ have ice age-the longer the winter, the lower the temperature and the longer the ice age.
Judging from the influence of precipitation, the seasonal and interannual changes of river runoff, which is mainly supplemented by rainwater, change with the change of rainfall, and the seasonal changes of river runoff are also great for rivers with large seasonal changes of rainfall. Rainfall affects the amount of river water. The Amazon river basin is located in the rainy tropical rain forest area and has become the largest river in the world.
Second, the influence of climate on lakes.
1. Internal flow lake area: dry climate, large evaporation, low water level and high salinity.
2. Flowing out of the lake area: abundant precipitation, large lake area, mostly freshwater lakes.
Thirdly, the influence of climate on seawater properties and ocean currents.
1, the influence on seawater salinity: the salinity is generally lower in areas with more precipitation and weak evaporation; On the contrary, the salinity is higher.
2. The formation of airflow: blown by prevailing wind.
3. Formation of upwelling: blown by offshore wind.
The influence of climate on human geographical environment
First, the impact on agricultural production (light, hot water and wind)
1, drought, flood, salinity, sandstorm, fire and other climatic phenomena have adverse effects on agricultural production.
2. Different climate types have different effects on agricultural production.
3. Different types of agricultural areas are formed under different climatic conditions: rice planting, pasture grazing, tropical plantation agriculture, dairy farming, etc.
Second, the impact on traffic.
1. Impact on inland navigation: By affecting the water level and quantity of rivers and the ice age, inland navigation will be affected.
2. Impact on ocean transportation: downwind and headwind, typhoons and hurricanes, etc.
3. Impact on aviation: the impact of bad weather such as foggy weather, strong wind and heavy rain.