Due to people’s living habits and regional differences, people’s health care methods are also different. Experts say that the physical fitness of people in the plains and basins is significantly better than that of people in the plains and people living in noisy cities. Many people also pay more attention to the Feng Shui environment of their homes. What impact does the lifestyle of plains and basins have on people's health? Let's find out with me!
Plains refer to land with an altitude below 200m. An area with broad, flat or slightly undulating ground. It is distinguished from hills by its gentle undulations and from plateaus by its smaller height. The three major plains in my country are Northeast China, North China and the middle and lower reaches of the Yangtze River Plain. A basin is a basin-shaped terrain with high surroundings (mountains or plateaus) and low middle (plains or hills). The four famous basins in my country are the Sichuan, Tarim, Junggar and Qaidam basins.
Since plains and basins have some similarities in geological structure and impact on human health, they are introduced together in this section.
1. Environmental characteristics and living habits
(1) Environmental characteristics
l. Low and flat terrain
The terrain of the plain is still flat. , the bottom of the basin generally also has this feature, especially in the geomorphological structure of some large basins. Due to the low terrain or surrounding mountains blocking the air flow, the air flow moves slowly and sometimes becomes stationary. The wind speed is low, the humidity is high, and fog and temperature inversion layers often appear.
2. Enrichment of certain geochemical elements
Due to the gently sloping terrain where plains meet mountains or hills, the foothills around the basin often form a gently sloping piedmont plain. , so the plains and basin floors determine many of the same geographical environment configurations, affect the distribution of geochemical elements, and are prone to forming enrichment areas of geochemical elements, becoming conditions for the onset of certain endemic diseases such as endemic fluorosis.
3. Developed water areas
Due to the open terrain and high groundwater level of the plains and basin bottoms, many areas are rich in mineral springs; the surface water network is crisscrossed with rivers, lakes, ponds, rice fields and There are many swamps, and many places are overgrown with weeds, which can easily become breeding grounds for certain infectious sources and host animals.
4. High population density, relatively developed economy and culture
my country’s population distribution is unbalanced. Mountainous areas are sparsely populated, while plains and some large basins such as the Sichuan Basin are densely populated. Shipping, industry, agriculture, economic and cultural undertakings are relatively developed, and many historical cities are concentrated in the plain areas.
(2) Examples of residents’ living habits
1. Housing characteristics
Take the courtyard houses on the North China Plain and the characteristics of houses in the Jiangnan water towns as examples.
The geographical location of the North China Plain is further south than that of the Northeast, but the temperature in winter is still relatively low. The average temperature in the coldest month can be as low as about minus 6℃. The extreme minimum temperature can drop to minus 20℃~30℃, and there are more than 100 cold days with the daily minimum temperature below 0℃. In addition, North China has a lot of wind and sand in spring, so thermal insulation and shelter from wind and sand are important factors to consider in residential buildings. Houses are usually laid out with the north facing south, sheltered from the wind and facing the sun. The courtyard house in Beijing is an example. It is a rectangular enclosed courtyard surrounded by walls of houses, measuring length from north to south, symmetrical from left to right, and with an open atrium. The courtyard is the center of lighting, ventilation and family activities; outside the courtyard, the north wind roars and the wind and sand roll, but inside the courtyard there is a sense of calm. In addition, in order to avoid the cold wind, houses with doors facing north and west are often equipped with a warm pavilion (door bucket), so that the front direction of the door becomes east or south, blocking the cold northwest wind from blowing directly into the house. Moreover, Beijing's courtyard houses, as an orthodox, serious, calm, closed and gentle architectural image, also reflect the humanistic environment and national psychological characteristics. It follows the hierarchical regulations of residences, and according to the etiquette tradition, the master bedroom is arranged on the central axis, and the east and west wing rooms are for the younger generations, symmetrically distributed on both sides of the axis.
The water towns in the south of the Yangtze River in my country have a flat terrain and numerous rivers and canals. The houses are located in front and behind the water. Doors, steps and aisles are all located next to the water. The houses are naturally integrated into the water, roads and bridges. This formed the light and warm culture of the Jiangnan area, giving local residents an architectural image of black tiles, green tiles, and exquisite clarity. The characteristics of the houses are ventilation, rain protection, moisture-proof, and heat insulation. First of all, the orientation of the house is not due south like in the north, but south to east, with a declination angle of about 15°. This orientation prevents excessive solar radiation from entering the room.
It can also benefit from the southeast wind, which is the dominant wind direction in summer, to achieve natural ventilation. The house is high and open, with thin hollow walls on the outside. There are many windows on the north and south walls, and there are even long floor-to-ceiling windows. The draft can slowly enter and eliminate the hot and humid air in the house. In order to insulate and shade the house, the house is deep and wide eaves are often used outside the house; in order to avoid rain and moisture, the wall base has a moisture-proof layer, the wall base and column base are often built with stones, and the indoor floor is 0.3-0.45m above the ground. , the roof is generally a slope tile roof with a relatively large slope, so that rainwater falling on the house can be drained away in time. However, in many areas such as Hubei, there is a so-called custom of "bright halls and dark bedrooms, which makes the ventilation and lighting of bedrooms poor.
2. Look at the clothes
Dressing in plains and basins The characteristics vary depending on the climate zone. The clothing materials in Jiangnan water towns are mostly light and breathable fabrics such as linen and silk. They are lighter in color and should be thin in thickness. They should cover the body as little as possible and be tailored to fit the body. Always carry an umbrella when going out. Straw hats provide protection from the sun and rain. In winter, only thin cotton-padded clothes are required. In Northeast China, clothes are required to be extremely warm. In addition to singles and jackets, the regular clothing should especially be made of cotton, wool or fur that has good warmth and cold resistance. Clothing, in order to protect the head, face, hands and feet from frostbite, cotton (wool) hats, shoes, gloves, scarves and masks are also necessary items.
3. Physical fitness and personality characteristics
Residents in the Jiangnan area are thinner, have more delicate skin, and have heavier moisture (including internal dampness and external dampness). For example, Wu Youke mentioned in "Wen Epidemic Theory": "The humid and humid land in the south is even drenched by long-lasting rain. , there are people who feel damp from time to time..., people from the south are mostly in narrow areas, and tend to have a delicate personality, good at planning, and are smarter; people from the northeast are taller and have a more forthright and straightforward personality. Of course, this is only in a broad sense. Natural conditions are only one factor that affects character formation and cannot be generalized.
4. Diet characteristics
The plains and basins cover a wide area, and the dietary structure is complex and diverse. Among them, two customs are more distinctive, namely eating spicy and pickled and smoked products.
Residents of areas with relatively humid plains or basins, such as Sichuan and Hunan, have a special hobby for chili peppers. They can’t do without spicy food for three meals a day almost all year round. However, the Northeastern people People in Hunan and Sichuan like to eat garlic and mustard as much as chili peppers. People know from long-term life practice that eating spicy food in winter can increase appetite and aid digestion, thereby increasing heat production in the body, which is beneficial to preventing cold and keeping warm, and can also prevent and treat common local rheumatism syndrome or waist and leg pain; eating spicy food in summer can Accelerating the body's perspiration and heat dissipation is beneficial to preventing heatstroke and cooling, and can also help overcome the "bitter summer phenomenon" that occurs in hot and humid climates. It can be seen that eating spicy food is a eating habit developed by local people to adapt to the cold and humid environment. However, various spicy flavors It is highly irritating, so people with hemorrhoids, tuberculosis, hemoptysis and gastric ulcer should eat with caution.
Sichuan pickles, Jinhua ham and bacon, and Northeastern sauerkraut are all foods with local flavor. It is a way to adjust the taste and extend the supply period of vegetables and meat. However, modern research has proved that these pickled, smoked and grilled foods contain nitrosamines and other substances, which have strong carcinogenic effects if taken in excess for a long time.
2. Factors beneficial to health
(1) Rich mineral spring resources
Most of my country’s famous mineral spring resorts are located in inland plains or hilly areas, such as The mineral springs in Shaanxi Lintong Huaqingchi, Beijing Xiaotangshan, Liaoning Tanggangyu, Xingcheng and Heilongjiang Five Lotus Ponds, Anhui Bantang, Nanjing Tangshan, Sichuan Panzhihua, Xinjiang Shawan Jingou River, Jiangxi Lushan Xingzi Hot Spring and other places contain a variety of minerals. Chemical particles, gases and radioactive substances; such as iodine, bromine, calcium, magnesium and carbon dioxide, hydrogen sulfide, radon, etc. The temperature, pressure, buoyancy and chemical composition of mineral springs have certain physiological effects on the human body and can prevent and cure certain diseases.
(2) Beautiful and pleasant lakeside scenery and climate recuperation
my country's lakeside climate recuperation areas are mainly distributed in the middle and lower reaches of the Yangtze River plains, such as Taihu Lake in Jiangsu, East Lake in Wuhan, and Jiangxi. Poyang Lake and Dongting Lake in Hunan. In addition, there are some riverside climate resorts such as Qiantang River and Songhua River, as well as scenic resorts such as Suzhou and Hangzhou. These resorts have always been attracted by Chinese and foreign people for their fresh air, The climate is humid and pleasant; the scenery is beautiful, with green trees, blooming flowers, rippling blue waves, lakes and mountains, and scenic spots and historic sites dotted among them, which is pleasing to the eye.
The beautiful environment can serve as a benign stimulus. Makes people feel comfortable and uplifted.
Therefore, recuperating in scenic spots and lakeside (river) environments has a good preventive and therapeutic effect on many nervous system, cardiovascular system and chronic digestive system diseases.
Of course, plains and basin areas can promote human health in many ways. Fresh fruits and vegetables, abundant aquatic products, and various grain, cotton and oil crops provide a rich source of food and clothing for the human body. An open economy, developed transportation, and a long cultural tradition meet people's spiritual life needs from different angles. The plains and some basins have become important areas for economic, political, cultural and population development in our country.
3. Factors harmful to health and prevention
(1) Endemic fluorosis
1. The impact of fluoride on the human body
Fluorine is a yellow-green gas and the most active element among non-metallic elements. Fluorine is widely distributed on the earth. Rocks, soil, water, animals, and plants contain a certain amount of fluorine. It is also one of the essential trace elements for human life activities. In addition to drinking water and food, fluoride can enter the human body through drinking tea, smoking, and smoking and grilling food with firewood.
The impact of fluoride on the human body is mainly reflected in the growth and development of bones and teeth. According to statistics, the human body's demand for fluoride is 2 mg per day for children under two years old, 3 mg per day for children between two and twelve years old, and 2-4 mg per day for adults. When the intake of fluoride is too low, the incidence of dental caries is relatively increased; but when the amount of fluoride in the body is excessive, it will cause systemic chronic poisoning, mainly teeth and bones. Children over seven years old may develop dental fluorosis, which is characterized by dull, rough chalk-like tooth surfaces, and then gradually turns yellowish, yellowish brown, or dark brown. In severe cases, the enamel is damaged and falls off, and the tooth surface appears dotted, Flaky or mottled defects, and eventually the teeth become brittle and fall out prematurely. Excessive fluoride deposition in bones will form skeletal fluorosis. The main clinical findings are persistent pain in bones and joints, numbness of limbs, twitching, tightness in the chest and waist, and bending and deformation of limbs and spine. In severe cases, it can lead to disability and paralysis. It is also accompanied by systemic poisoning symptoms, such as headache, tinnitus, palpitations, nausea, vomiting, abdominal pain, diarrhea, memory loss, slow reaction, etc.
The pathological mechanism of fluorosis is that excessive fluoride is deposited in bone tissue, causing bone cell dystrophy and leading to osteodystrophic degenerative lesions. Excessive fluorine combines with calcium in the bone to form calcium fluoride, and excessive calcium fluoride inhibits bone phosphorylase, causing calcium metabolism disorders in the bone, slowing down the absorption process of calcium, and dissociating it from the bone. , causing osteoporosis and skeletal fluorosis.
2. Regional distribution characteristics of fluorosis
Low-lying and closed terrain, near salt lakes, valleys, salt marshes, and backed by tall mountains are the significant geomorphological characteristics of the distribution of fluorosis areas. . The lower the terrain, the higher the fluorine content, and the higher the prevalence of fluorosis. This has basically become a universal medical geography rule. Our country is one of the important epidemic areas of endemic fluorosis in Asia. It is known that 21 provinces (cities) and districts in the country have this disease, mainly in the northern plains such as Songnen Plain, Xiliaohe Plain, North China Plain, Hexi Corridor, Chaihai Damu Basin and Lop Nur Depression are severely affected areas.
3. Preventive measures for endemic fluorosis
(1) Investigate water quality and improve water sources: The main cause of endemic fluorosis is high fluoride content in drinking water. Therefore, investigating the fluoride content of urban and rural water and improving water quality are basic measures to prevent endemic fluorosis. For example, in many areas with high fluoride content in shallow water and low fluoride content in deep water, deep well water can be used instead of shallow well water; in areas with high fluoride content in well water, surface water can be used as a drinking water source; when there is a lack of low fluoride water in the local area , you can also introduce low-fluoride water for drinking in appropriate areas.
(2) Reduce the fluoride content of water: When the water source cannot be changed for drinking water with high fluoride content, defluoridation measures can be taken. For example, using the alum-added alkali method (adding 17g of alkali and alum each to 15L of water can reduce the water fluoride from 7mg/liter to 1.2~1.5L); boiling the water for half an hour can reduce the water fluoride by 1/5-5/6; Electrodialysis can be used to remove fluoride in some industrial enterprises.
(3) Reduce the fluoride content in food: In areas with high fluoride, crops with low fluoride content should be selected; or commercial crops that are not used for food should be tried; and phosphate fertilizers with high fluoride content (such as phosphate fertilizers) should be banned. Mineral powder) and fluorine-containing pesticides (such as fluamide), try to reduce the body's intake of fluorine.
If you don't use fluoride toothpaste, don't drink strong tea (green tea contains 336 mg of fluoride per kilogram), and eat less smoked and grilled fish floss, studies have shown that the fluoride content in fish floss is surprisingly high, and its absorption rate is also very high. For example, if you eat 10 to 20 grams of fish floss a day, you will absorb 8 to 16 mg of fluoride from the fish floss. If you add in the fluoride ingested from drinking water and other foods, the amount will be considerable. The safe value of fluoride ingested by the human body is 3 to 4.5 mg. If this value is exceeded, fluoride accumulates in the body and can lead to food poisoning.
(4) Eat more foods rich in vitamin A.C: Because when the fluoride content of water is similar, individual malnutrition, especially when vitamin A.C is deficient, can easily promote the occurrence of skeletal fluorosis. Therefore, you should eat more foods rich in vitamin A.C, such as pork liver, eggs, lean meat, carrots, fresh green leafy vegetables, fruits, etc.
(5) Strictly implement the "Environmental Protection Law" and restrict the discharge of fluorine-containing "three wastes" into the environment in industrial and mining enterprises; taking comprehensive recovery measures for waste gas and waste water is an important step in preventing fluorine from polluting the environment. Measures.
(2) Liver cancer and certain infectious diseases
1. Plain lowlands and liver cancer
Liver cancer is a highly malignant tumor with geographical distribution. There is an obvious correlation with the plains and lowlands. The incidence of liver cancer in my country is mainly concentrated in North and South China, such as the Hengyuan Plain in the middle and lower reaches of the Yangtze River, the lower reaches of the Huaihe River, the southeastern coastal plain, and the Pearl River Delta. The incidence rate is higher, followed by the Songnen Plain, The Sanjiang Plain, the Ningxia Plain and the northern part of the North China Plain are usually low-lying, with blocked water sources and poor drainage, and pollutants or harmful substances are easy to accumulate; in some places, residents drink stagnant water from ditches; especially in the Yangtze River Delta, the climate is humid and mildew rain occurs. The season is long and food is prone to mold. Local residents have the habit of storing food under the bed and eating smoked, grilled and pickled food. They consume a lot of aflatoxin, which induces the occurrence of liver cancer. According to a large number of domestic epidemiological surveys of liver cancer. , Low-lying environment does have a certain impact on the incidence of liver cancer
2. Low-lying environment and certain infectious diseases
Some infectious or parasitic diseases are mainly prevalent in low-lying environments. For example, malaria is a common parasitic disease caused by Plasmodium and is clinically characterized by periodic chills and fever, splenomegaly and varying degrees of anemia. The general pattern of geographical distribution is: low-lying areas. The incidence rate in the basin is higher than that in the surrounding mountainous areas. There are many paddy fields, lakes, and swamps in the low-lying areas, and the temperature is relatively high, which is conducive to the breeding and reproduction of mosquitoes, becoming an important factor in the epidemic of malaria.
It is an endemic parasitic disease caused by schistosomiasis in tropical and subtropical environments and transmitted through the skin. In the clinical stage, fever, hepatomegaly, and a significant increase in blood eosinophils occur, and in the chronic stage, there are splenomegaly, diarrhea, and pus. Symptoms such as bloody stools and liver cirrhosis. Because the intermediate host of schistosomiasis, snails, are mostly distributed in lakes, ponds, paddy fields, and ditches, the prevalence of schistosomiasis is also strictly regional in my country, including central, southern, and southwestern provinces. Areas around the low-lying and flat lake basins of the middle and lower reaches of the Yangtze River, such as Dongting Lake, Poyang Lake and Taihu Lake, are more serious.
Preventive measures for liver cancer, malaria and schistosomiasis include carrying out environmental sanitation campaigns and eliminating mosquitoes and snails. , do a good job in the management of feces and water sources; pay attention to food hygiene, do a good job in food storage, mold prevention and detoxification; try to avoid contact with infected water, do a good job in census work, etc.
Conclusion: Through the above. We realize the impact of plains and basins and plains and basins on people's health. I believe that through my interpretation, everyone has a certain understanding of this. In future life, everyone must learn to use natural resources and try to choose food containing Go for health care in an area rich in mineral spring resources!