Why are we so accustomed to referring to drought as a drought? What are the effects of drought on hu

In fact, what we often call drought is a drought situation caused by abnormal weather, because of a serious lack of moisture in the soilThe water balance of crops is disrupted, resulting in reduced crop yields. This can lead to a series of food problems and even famineIt can also cause water shortages in animals and plants, although indirectly lead to death.

However, locusts may occur after a droughtThis can exacerbate hunger caused by drought and may even cause social unrest.

Due to the lack of water, long-term animal husbandry does not get the growth of organisms, and there will be a large reduction in production or extinction. This is a relatively common natural disaster, which will not only affect agriculture, but also affect the ecological environment of industrial cities.

The formation of drought is generally related to the local climate, and even the precipitation in some places is less than 250 mm. This area has become arid, and if the precipitation is between 250 and 500 mm, it is called a semi-arid zone.

The world's arid regions account for about 25% of the world's land area, most of which are in the Sahara Desert and western North America and northwestern China.

If the snow melts less, a drought situation can also formMost areas of China belong to the Asian monsoon climate, and the precipitation may be affected to a certain extent with the distribution of land and seaThere are also imbalances between regions and between seasons.

In the area north of the Huai River in the Qinling Mountains, there will be drought in spring, and drought may occur in the Huang-Huai-Hai area in spring, summer and autumn, which is a relatively large area of drought in China.

Eastern Africa is sometimes hit by severe droughts due to lack of rainfallIt even led to the death of all crops and the loss of grains. A large number of livestock have also died due to lack of water, causing serious losses to local peopleand even let the local economy drop directly.

Nature suffers from many disasters caused by drought, and many measures have been taken around the world to prevent droughts. For example, some areas will develop agricultural irrigation, which may change the variety of crops.

In this way, some more drought-tolerant varieties are selected to make full use of the limited precipitation, which allows the plants to grow adequately.

In some areas, trees have been planted to improve climatic conditions and reduce water evaporation. At the same time, modern technology and water-saving measures are used, artificial rainfall and mulching are used, and even groundwater and seawater are used. These measures are aimed at preventing drought and reducing all losses to human beings.

If the drought lasts for a long time, people's food cannot be harvested, so it is called a disaster. Drought can lead to particularly poor harvests and poor air. It affects the photosynthesis of fruit trees and affects the harvest of farmers. Huge losses for farmers.

We are accustomed to saying that drought is a drought because of abnormal weather, because of the serious lack of water in the soil, the water balance of crops is destroyed, which leads to a reduction in crop yields, which will cause a series of food problems, and even famine; Because after the drought, locusts are generally triggered, which will exacerbate the hunger caused by the drought, and may even cause social unrest, people say that the cause of drought is because the long-term animal husbandry can not get the growth of organisms, there will be a large number of production reductions or extinctions, it is a general natural disaster, not only agriculture is affected, but also will affect the ecological environment of industrial cities.

The main reason is that if there is a large-scale drought, it will cause very bad results, especially in ancient times, if there is a drought, then it will definitely cause no harvest, so that farmers suffer great losses, and even the family will be ruined, so it will be said to be a drought. The impact of drought on human beings is very large, it is likely to cause high temperature weather to cause people to feel unwell, a large area of illness, and also cause the rampant plague, which will reduce food production and affect people's lives.

This is because if there is a drought, it will lead to a significant reduction in the production of agricultural products, which will lead to a shortage of food for people, and then there may be infectious diseases, and at the same time, it will lead to extreme water shortages, and people may starve to death.

1.Drought leads to a decrease in the body's immunity.

2.Drought is the number one disaster that endangers agricultural and animal husbandry production.

Meteorological conditions affect the distribution, growth and development of crops, and yield.

The reservoir dried up. Quantity and quality are formed, and water conditions are the main conditions that determine the type of agricultural development. Due to its high frequency, long duration, wide range of impact and large delayed impact, drought has become the most serious meteorological disaster affecting China's agricultural production. Drought is the main animal husbandry meteorological disaster in China, which is mainly manifested in affecting pasture and livestock products and aggravating grassland degradation and desertification.

3.Drought has further deteriorated the ecological environment.

1 The warming and drying of the climate has caused the water level of lakes and rivers to drop, and some of them have dried up and cut off. Due to the lack of surface water supply caused by drought and water shortage, we can only rely on a large amount of over-extracted groundwater to maintain the livelihood of residents and the development of industry and agriculture, but over-exploitation of groundwater has led to a series of ecological and environmental problems such as groundwater level decline, funnel area expansion, land subsidence, and seawater intrusion.

2 Drought leads to degradation of grassland vegetation. Most areas of China are in arid, semi-arid and sub-humid ecologically fragile zones, and the climate is characterized by the prevailing southeast monsoon in summer, the same season of rain and heat, and the precipitation mainly occurs from April to September every year. Although the rainy season in the northern region is also from April to September every year, there is great pore size heterogeneity, and it has the characteristics of nine droughts in ten years.

Due to the change of climate and environment and unreasonable human disturbance activities, the vegetation has been seriously degraded, and after entering the 21st century, drought has a tendency to worsen for several consecutive years, and it is a continuous drought in spring, summer and autumn, which is very unfavorable to the fragile ecosystem. 3 Climatic aridity exacerbates the process of land desertification.

4.Warming and drying of the climate has led to other natural disasters.

Droughts in winter and spring are prone to forest fires and grassland fires. Since 2000, due to the continuous increase of global temperature, the climate in the northern region has been dry, the ground temperature of woodland is high, the grassland has a long dead period, and the underground forest fire and grassland fire have an increasing trend.

It has the greatest impact on crops, which will cause no harvest of grains, so that people will only be hungry.

Partially agree with the upstairs answer that the size of the flow of water is determined by both supply and attrition.

For most rivers, the recharge is mainly atmospheric precipitation. The main losses are evaporation, infiltration, human water diversion and utilization along the way.

When the amount of water recharged is less than the amount lost, the river slowly dries up.

This year's drought in the southwest has caused many rivers to dry up, which is caused by prolonged lack of rain, coupled with a lot of evaporation and human water use.

But I personally think there is a very important reason that everyone ignores, and that is the destruction of the work of artificial rainfall on the earth, which is a free "water carrier". The earth itself has the function of regulating water and drought, and now many urban areas are as long as there is a shortage of water in their own areas, when the clouds containing water reach their own sky and reach certain conditions, they will implement artificial rainfall, which has a certain impact on the surrounding areas and even the entire cloud movement. Artificial rainfall is a major man-made damage to the rainwater recharge process.

Reputation. In addition, the damage to the environment leads to the weakening of the water retention effect on the ground, which is also a reason why the water cannot be retained on the ground.

The above views are just some personal views of what I have done.

The geomagnetic field is too weak to affect the intensity of rainfall, if you do this research, you can study the use of the principle of extremely low frequency to affect the weather for artificial rainfall research, see, geomagnetic environment of drought and flood disasters, Yang Xuexiang.

1. Drought stress will cause abnormal operation of photosynthesis and respiration, hinder the accumulation of dry matter, and reduce the total number of spikelets. In particular, the "Wangtian" rice fields, which lack sufficient water supply, will face the risk of no harvest if the drought continues.

High temperature weather will also damage the flowering and fertilization process, resulting in pollen abortion, resulting in an increase in empty shells and a decrease in seed setting rate. The dual effects of temperature and drought will have a very negative impact on the formation of early rice yield in western China.

2. High temperature and drought will slow down the growth of rubber trees in rubber plantations in the western and southern regions, hinder the synthesis of latex, and reduce the yield of rubber plantations. Rubber consumes more water, and the long-term water stress leads to damage to the rubber tree and yellowing of young leaves.

3. High temperature and drought will cause water stress to cause leaf curl and stomata to close, which will affect the photosynthetic process of fruit trees, which is not conducive to the fruit expansion of bananas and other fruit trees, and is easy to cause deformed fruits; Mango, lychee and longan are in the harvest season, and the high temperature is not conducive to the storage and preservation of fruits after picking, which affects the flavor and quality of fruits.

The word drought is explained as: drought gānhàn. (1) No precipitation or too little precipitation, which makes the soil weather dry.

The word drought is explained as: drought gānhàn. (1) No precipitation or too little precipitation, which makes the soil weather dry.

The phonetic pronunciation is: Pinyin is: gānhàn.

The part of speech is: adjective. The structure is:

Dry (monomeric structure) Dry (upper and lower structure).

What is the specific explanation of drought, we will introduce it to you in the following aspects:

1. Citations and explanations [click here to view the details of the plan].

It is said that the rainfall is insufficient and the climate is dry. Quoting Tang Dufu's poem "Chai Gate": "On a dry day in the east city, its gas is like burning firewood.

The second fold of Yuan Jin Renjie's "Chasing Han Xin": "I think this man is trapped and suffering, just like a dragon who has not been helped by drought." "Tao Zhu "The Style of the Pine Tree":

The cold does not kill it, and the drought does not destroy it. ”

2. Chinese dictionary.

Due to too little rainfall or insufficient water sources, the soil and climate are too dry.

3. Network Explanation.

Drought (meteorological term) Drought refers to a climatic phenomenon in which the total amount of fresh water is too small to meet the needs of human survival and economic development, and it is generally a long-term phenomenon. Drought has been a major natural disaster facing mankind since ancient times, and even in today's advanced technology, its catastrophic consequences are still everywhere. It is worth noting that with the economic development and population expansion of human beings, the shortage of water resources is becoming more and more serious, which has directly led to the expansion of arid areas and the aggravation of aridification, and the trend of aridification has become a global concern.

Synonyms about drought.

Drought, floods, fertile waterlogging.

Antonyms about drought.

Flooding is rampant. Poems about drought.

The Drought" verses about drought.

Words about drought.

drydrought

Idioms about drought.

Frequent droughts and droughts are still intense, and drought is abusive, and the drought is abusive, and the clouds are dry, the wings are dry, and the wings are crisp, and the drought seedlings are rainy, and the clouds are clean and clean, and the harvest is guaranteed by drought and flood.

Words about drought.

Drought and flood to ensure harvest, many are drought, drought is a disaster, drought clouds are drought, drought seedlings are rain, drought is abusive, drought is fierce, drought is frequent, drought is still a big drought and clouds.

Sentence formation about drought.

1. Heat and drought have forced people to leave their homes.

2. Global warming will cause changes in precipitation, dryness and wetness in various regions of the world, which in turn will lead to changes in the economic structure of countries around the world. The mid-latitudes will become arid due to intense evaporation due to climate warming, and the areas that are now agriculturally advanced will be degraded into grasslands; Warmer precipitation will increase at higher latitudes, allowing temperate crops to make their home here. However, from a global perspective, the negative impact of climate warming on the world economy is mainly hidden, and only some regions have benefited from it.

3. When the sea water decreases and carries hunger to a certain extent, there will be a large area of land in a state of long-term drought, and a large number of terrestrial organisms will become extinct, thus endangering the survival of human beings.

4. There was no rain in the winter of this year, and there was a rare dry weather.

5. God created the world for me, and also created wind and rain, created drought, created locusts and birds, and I created a world that could not be as people wanted.