Message on the topic of protection of natural reservoirs. Protection of reservoirs and their inhabitants. Report. Sources of environmental danger

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REPORT ON THE TOPIC: “PROTECTION OF RESERVOIRS”

Plan:

Meaning, role in nature.

Causes of pollution.

Protection of water bodies:

So that you can take action.

What is a pond??? Water - permanent or temporary accumulation of standing or reduced , , in natural or artificial depressions ( etc.). In a broad sense, also the designation And .

. Science studies water bodies By the way, about 71% of the surface , , , covered with water ( etc.). In a broad sense, also the designation , ice) - 361.13 million km. On Earth, approximately 96.5% of water comes from the oceans, 1.7% of the world's reserves are groundwater, another 1.7% are glaciers and ice caps , a small part is found in rivers, lakes and .

, and 0.001% in clouds (formed from airborne particles of ice and liquid water) There are bodies of water:

artificial and natural Natural bodies of water include:

stream, river, lake, sea Artificial reservoirs include:

Plan:

reservoirs, pond, canalThe importance of reservoirs is great. Reservoirs are reservoirs of water, which is necessary for all living things. In addition, the water of reservoirs participates in the water cycle. The role of water in the emergence and maintenance of on Earth, in chemical structure etc.). In a broad sense, also the designation living organisms, in the formation . . Water is the most important substance for all living things on the planet

And for those plants and animals that live in reservoirs, this is the only home.

When you approach a body of water in warm weather, you only see some of its inhabitants. It is impossible to see everyone. But there are a lot of them! A body of water is a place where a wide variety of living creatures live.

The role of plants in a reservoir is great. They serve plants and animals and release oxygen into the water, which is necessary for the respiration of organisms. Underwater thickets of plants serve as a refuge for animals.

When plants and animals in a body of water die, their remains fall to the bottom. Here, under the influence of microbes, the dead remains rot and are destroyed. Salts are formed from them. These salts dissolve in water and can then be used to feed new plants.

Pollution natural waters - this is a decrease in their biosphere functions and economic significance as a result of admission to them harmful substances.

Meaning, role in nature.

There are natural and anthropogenic pollution. Natural pollution occurs as a result natural causes- volcanic eruptions, earthquakes, catastrophic floods and fires. Natural (natural) pollution - environmental pollution, the source of which is natural processes and phenomena not directly caused by human activity: volcanic eruptions, dust storms, floods, natural fires, etc.

Anthropogenic (artificial) pollution

- the result of human activity. Currently, the total power of anthropogenic pollution sources in many cases exceeds the power of natural ones.

Artificial (anthropogenic) pollution of water bodies is mainly the result of the discharge of wastewater from industrial enterprises and populated areas. Pollution entering a body of water, depending on its volume and composition, can have an impact on it. different influence:

1) change physical properties water (transparency and color changes, odors and tastes appear);

2) floating substances appear on the surface of the reservoir and sediments form (sediment at the bottom);

3) changes chemical composition water (the reaction changes, the content of organic and inorganic substances, harmful substances appear, etc.);

4) the content of dissolved oxygen in water decreases due to its consumption for the oxidation of incoming organic substances;

5) the number and types of bacteria change (pathogenic ones appear) introduced into the reservoir along with wastewater. Polluted water bodies become unsuitable for drinking and sometimes for technical water supply; fish die in them.

In the first decade of the 21st century anthropogenic pollution The depletion of natural waters has become global in nature and has significantly reduced the available exploitable fresh water resources on Earth.

Humanity consumes huge amounts of fresh water for its needs. Its main consumers are industry and agriculture. The most water-intensive industries are mining, steel, chemicals, petrochemicals, pulp and paper, and food processing. They consume up to 70% of all water spent in industry.

One of the main water pollutants is oil and petroleum products. Oil can enter water as a result of natural seeps in areas where it occurs. But the main sources of pollution are associated with human activity: oil production, transportation, refining and use of oil as fuel and industrial raw materials.

Among the products industrial production special place in its own way negative impact Toxic synthetic substances occupy the aquatic environment and living organisms. They are increasingly used in industry, transport, and household services. The concentration of these compounds in wastewater is usually 5-15 mg/l with a MPC of 0.1 mg/l. These substances can form a layer of foam in reservoirs, which is especially noticeable on rapids, riffles, and sluices. The ability to foam in these substances appears already at a concentration of 1-2 mg/l.

Other pollutants include metals (for example, mercury, lead, zinc, copper, chromium, tin, manganese), radioactive elements, pesticides from agricultural fields, and runoff from livestock farms. Slight danger for aquatic environment metals include mercury, lead and their compounds.

Table 1. Main pollutants of aquatic ecosystems in various industries

Main types of pollutants

Oil and gas production, oil refining

Petroleum products, synthetic surfactants, phenols, ammonium salts, sulfides

Forest industry, pulp and paper industry

Sulfates, organic substances, lignins, resins and fatty substances

Mechanical engineering, metalworking, metallurgy

Heavy metals, fluorides, cyanides, ammonium compounds, petroleum products, phenols, resins

Chemical industry

Phenols, petroleum products, synthetic surfactants, aromatic hydrocarbons, inorganic

Mining and coal industry

Flotation reagents, inorganics, phenols

Light, textile and food industries

Synthetic surfactants, petroleum products, organic dyes, other organic substances

A significant amount of dangerous pollutants such as pesticides, ammonium and nitrate nitrogen, phosphorus, potassium, etc. are washed off from agricultural areas. Basically, they end up in water bodies and drains without any treatment, and therefore contain a high concentration of organic substances, nutrients and other pollutants.

The main consumer of fresh water is agriculture: 60-80% of all fresh water is used for its needs. Moreover, its irrevocable consumption is high (especially for irrigation).

Expanded production (without treatment facilities) and the use of pesticides in fields lead to severe pollution of water bodies with harmful compounds. Pollution of the aquatic environment occurs as a result of the direct introduction of pesticides during the treatment of reservoirs for pest control, the entry into reservoirs of water flowing from the surface of treated agricultural land, when waste from manufacturing enterprises is discharged into reservoirs, as well as as a result of losses during transportation, storage and partly from atmospheric precipitation.

Along with pesticides, agricultural runoff contains a significant amount of fertilizer residues (nitrogen, phosphorus, potassium) applied to the fields. In addition, large amounts of organic nitrogen and phosphorus compounds come from livestock farms and sewage. Increased concentration nutrients in the soil leads to disruption of the biological balance in the reservoir.

Initially, the number of microscopic algae in such a reservoir sharply increases. As the food supply increases, the number of crustaceans, fish and other aquatic organisms increases. Then death occurs huge amount organisms. It leads to the consumption of all oxygen reserves contained in the water and the accumulation of hydrogen sulfide. The situation in the reservoir changes so much that it becomes unsuitable for the existence of any form of organisms. The reservoir is gradually “dying.”

Pollutants can also penetrate into groundwater: when industrial and agricultural waste seeps from storage facilities, storage ponds, settling tanks, etc. Groundwater pollution is not limited to the territories of industrial enterprises, waste storage facilities, etc., but spreads downstream to distances of up to 20 - 30 km or more from the source of pollution. All this poses a real threat to drinking water supply in these areas.

Moreover, groundwater pollution negatively affects ecological condition surface waters, soils and other components of the natural environment. In particular, pollutants contained in groundwater, can be carried out by flow into surface water bodies and pollute them.

Lake Baikal

Almost in the center of the huge continent of Eurasia there is a narrow blue crescent - Lake Baikal. In the Baikal mountain region, surrounded on all sides by high ridges, it stretches over 636 kilometers in length and up to 80 kilometers in width. The area of ​​Baikal is equal to Belgium with its almost 10 million population, many cities and industrial centers, highways and railways. 336 permanent rivers and streams flow into Baikal, while half of the volume of water entering the lake comes from the Selenga. The only river that flows out of Baikal is the Angara. In order to understand the enormity of Baikal’s water body, imagine that the Angara, which annually removes 60.9 km3 of water from the lake, would need 387 years of continuous work to drain its bowl. Provided, of course, that during this time not a liter of water gets into it and not a drop evaporates from its surface.

Pollution of Lake Baikal by the waters of the Selenga River

The largest tributary of Lake Baikal is the Selenga River. The main sources of pollution of the Selenga River are located in Buryatia. There are big ones there industrial cities Ulan-Ude and Selenginsk. The treatment facilities of the city of Ulan-Ude provide 35% of the total amount of waste discharged into the Selenga.

In 1973, not far from the city of Selenginsk and 60 kilometers from Lake Baikal, the Selenginsky pulp and cardboard mill was opened. Since 1991, a closed water circulation system has been used there.

As the management of the plant assures, the discharge of production waste into the river. Selenga has been completely stopped. But at the same time, the enterprise continues to pollute the air; more than 10,000 cubic meters are emitted per year solid waste, which seep and end up in the waters of the Selenga, and then in Baikal. Chemicals used in agriculture washed away into the Selenga with the rains. In addition, the quality of water pollution in Lake Baikal is negatively affected by the discharge of livestock waste and soil erosion. In the deltas of the Selenga River, according to the results of a 2006 study, the concentration of heavy metals such as zinc, lead and copper exceeded the norm by one and a half to two times.

Severe pollution of the river delta. Selenga is the main cause of death of omul eggs.

Consequences of the construction of the Irkutsk hydroelectric power station for Lake Baikal

In 1950, construction began on the Irkutsk hydroelectric power station - the first hydroelectric power station of the Angarsk cascade. The hydroelectric dam increased the water level in Lake Baikal by a meter.

Sudden changes in the water level in Lake Baikal cause enormous harm to the flora and fauna of Lake Baikal. With a rapid decline in the water level of Lake Baikal, the spawning grounds of valuable fish species dry out and eggs die. The dam of the Irkutsk hydroelectric power station, which does not have fish passages, blocks the migration routes of fish that go to spawn in the upper reaches of the Angara. Valuable breeds of sturgeon and whitefish are being replaced by sorog, perch, and ruff. Buryat scientists came to the conclusion: sudden change water level affects the entire Baikal ecosystem, leading to mixing water masses, severe destruction of the banks. Spawning sites and fish reproduction are in danger.

Water pollution by waste from settlements coastal zone

More than 80 thousand people live in small towns and villages in the coastal zone of Lake Baikal.

Together, all these settlements dump about 15 million cubic meters of waste per year. Treatment facilities for domestic and industrial wastewater in settlements near Lake Baikal are either completely absent or of very low quality.

“The laws” of ecology by B. Kammoner are very clear and concise: 1) everything is connected to everything; 2) everything has to go somewhere; 3) nature “knows” better; 4) nothing is given for free.

Causes of pollution of Lake Issyk-Kul.

What measures are already being taken.

What I would like to do.

A large surface of the Earth is covered with water, which altogether makes up the World Ocean. On land there are sources of fresh water - lakes. Rivers are the vital arteries of many cities and countries. The seas feed a large number of of people. All this suggests that there cannot be life on the planet without water. However, people neglect the main resource of nature, which has led to enormous pollution of the hydrosphere.

Water is necessary for life not only for people, but for animals and plants. By wasting water and polluting it, all life on the planet is at risk. Water supplies on the planet vary. Some parts of the world have a sufficient number of bodies of water, while others experience great water shortages. Moreover, 3 million people die every year from diseases caused by drinking poor quality water.

Causes of water pollution

Because the surface water are the source of water for many settlements, the main cause of pollution of water bodies is anthropogenic activity. The main sources of hydrosphere pollution:

• domestic wastewater;
• operation of hydroelectric power stations;
• dams and reservoirs;
• use of agrochemicals;
• biological organisms;
• industrial water runoff;
• radiation pollution.

Certainly, this list we can continue ad infinitum. Quite often, water resources are used for some purpose, but by discharging wastewater into the water, it is not even cleaned, and the polluting elements spread their range and deepen the situation.

Protection of water bodies from pollution

The condition of many rivers and lakes around the world is critical. If you do not stop the pollution of water bodies, then many aquatic systems will stop functioning - self-cleaning and giving life to fish and other inhabitants. Including people will not have any water reserves, which will inevitably lead to death.

Before it’s too late, reservoirs need to be protected. It is important to control the process of water discharge and the interaction of industrial enterprises with water bodies. It is necessary for every person to save water resources, since excessive consumption of water contributes to its use more, which means that water bodies will become more polluted. Protection of rivers and lakes, control of resource use is necessary measure in order to keep the planet's reserves clean drinking water necessary for life for everyone without exception. In addition, it requires a more rational distribution water resources between different settlements and entire states.

The protection of natural communities is essential component in the interaction of man with living nature. In Russia, for example, this issue is given importance national significance. What do people do to protect rivers, lakes, fields, forests and animals around the world? They are taking appropriate measures, including at the state level.

Nature Conservation Law

The law on the protection and protection of rivers, farmland, etc.) and the use of wildlife was adopted in the Soviet Union in 1980. According to him, all plant and animal world Russia, Ukraine, Georgia and other former Soviet republics are considered state property and national property. This regulation requires humane treatment of flora and fauna.

The corresponding decree on nature protection obliges all people living in the territory covered by the law to strictly comply with all existing requirements and rules in their professional and personal lives, and try to preserve existing wealth native land. Special attention should be paid to the protection of such natural objects like rivers. The fact is that currently water bodies around the world are heavily polluted by one or another human activity. For example, wastewater, oil and other chemical wastes are discharged into them.

What are people doing to protect rivers?

Fortunately, humanity has realized the damage it is causing to the environment. Currently, people around the world have begun to implement plans to protect water bodies, particularly rivers. It consists of several stages.

1. The first stage is to create different treatment facilities. Low-sulfur fuel is used, garbage and other waste is completely destroyed or efficiently processed. People build heights of 300 meters or more. Happening Unfortunately, even the most modern and powerful wastewater treatment plants cannot provide complete protection of water bodies. For example, chimneys, designed to reduce the concentration of harmful substances in certain rivers, spread dust pollution and acid rain over vast distances.
2. What else are people doing to protect rivers? The second stage is based on the development and application of fundamentally new production. There is a transition to low-waste or completely waste-free processes. For example, many people already know the so-called direct-flow water supply: river - enterprise - river. In the near future, humanity wants to replace it with “dry” technology. At first, this will ensure a partial and then complete cessation of wastewater discharge into rivers and other bodies of water. It is worth noting that this stage can be called the main one, since with its help people will not only reduce but also prevent it. Unfortunately, this requires a lot material costs unaffordable for many countries around the world.
3. The third stage is a well-thought-out and most rational placement of “dirty” industries that adversely affect environment. These include enterprises, for example, petrochemical, pulp and paper and metallurgical industry, as well as the production of various building materials and thermal energy.

How else can we solve the problem of river pollution?

If we talk in detail about what people do to protect rivers from pollution, it is impossible not to note another way to solve this problem. It lies in reuse raw materials. For example, in developed countries its reserves are calculated in fabulous quantities. The central producers of recyclable materials are the old industrial regions of Europe, the United States of America, Japan and, of course, the European part of our country.

Nature conservation by man

What do people do to protect rivers, forests, fields and animals at the legislative level? To preserve natural communities in Russia, back in Soviet times, so-called reserves and reserves began to be created. As well as other human-protected areas. They partially or completely prohibit any outside interference in certain natural communities. Such measures allow flora and fauna to be in the most favorable conditions.

Ponds inhabited by frogs, on the banks of which irises grow, are becoming increasingly rare. Some of them were drained, others gradually turned into landfills. In this regard, the importance of small garden ponds is gradually increasing. Many animals need them.

Conservation measures

Current situation

The decline in populations of once widespread species of various animals and plants shows how important role Ordinary ponds and lakes play a role in the lives of animals. Many organizations and societies are involved in the protection of coastal vegetation, which increases the value of water bodies and helps animals. Ponds should be kept clean, deepened, facilitating the settlement of new species of fauna and flora, marshy banks should be strengthened, and efforts should be made to return to them those species of animals and plants that are typical for a particular biotope.

New reservoirs

Landowners should be encouraged to install ponds on their land plots, provide instructions and provide them with financial assistance.

Nature conservation

Pollution and oversaturation of water bodies with fertilizers can be prevented by increasing control over the use of chemical substances- herbicides and pesticides. From artificial fertilizers to personal plots It's better to refuse altogether. But you can use them against pests biological enemies and decoctions of appropriate herbs.

How can we help?

You can join the ranks local organization Nature Conservation, on your own initiative, count the bodies of water in the area where you live and investigate their condition. If dragonflies fly around the pond, then the water in the pond should be relatively clean.

If there is an almost dry or heavily polluted pond on a territory that does not belong to private individuals, you can contact the relevant authorities with a proposal to organize the cleaning of such a reservoir.

Create a pond in your garden. Even a pond whose diameter is about one meter is convenient place for the existence of many animals.

POND FORMATION

Many ponds look like natural bodies of water, but they are man-made. Some ponds were used as watering places for livestock. Fish, mainly carp, are often bred in ponds.

In the past, the pond was the source of water that turned the mill and powered the steam hammer. Some ponds are formed as a result of water filling depressions that were left in areas where clay, sand and gravel were mined.

There are ponds that were originally part of protective moats around fortresses and castles. Ponds are usually located in places where there are sources of water: near streams and surface groundwater. Thus, stagnant reservoirs were constantly supplied with fresh water, which compensated for losses due to evaporation and leaks.

People dug small ponds themselves; large ones were formed as a result of erosion of the banks. In a pond, aquatic plants usually occupy the entire muddy bottom, since the water everywhere warms up well and in summer there is little oxygen in it. Common algae found in ponds are water lilies and bladderwrack.

HOUSE OF MANY ANIMALS

Ponds, rivers and lakes are inhabited by rich fauna, if people do not pollute the reservoirs. Natural lakes, ponds, and other small bodies of water play an important role in nature. Many freshwater animals live in them, for example, fish, swimming beetles, frogs and dragonflies breed. The temperature of the surface layer of water in ponds, which is several centimeters thick, is constantly changing - it quickly heats up during the day and cools down greatly at night. Some animals, such as mosquito larvae, require such temperature fluctuations.

Mosquito larvae develop very quickly, so they can live even in small puddles - small temporary reservoirs. The larvae of aquatic insects serve as food for fish and newts, which in turn are eaten by birds. Tubifex worms are not harmed by temporary drainage of the reservoir, since they bury their eggs in the silt at the bottom.

WATER WORLD

There's not a single one free in the pond ecological niche. Plants take root at the bottom or float on the surface of the water. Animals burrow into the mud, stay on its surface or swim in the water column. No two ponds are alike. The differences between them usually relate to how much oxygen the water contains, essential for life. Aquatic plants produce oxygen only during the day, since the process of photosynthesis occurs in their cells under the influence of sunlight.

At night, plants absorb some of the oxygen themselves, so if there are too many plants in the pond, fish will not be able to live in the pond due to lack of oxygen.

It must be remembered that duckweed is also a plant. Shallow ponds are usually less saturated with oxygen than deep ones because the water temperature is higher and warm water, as is known, contains less oxygen than cold water.

Fisherman to Fisherman. Video (00:27:17)

Broadcast on the protection of water bodies in Penza region and their maintenance by tenants. A raid with inspectors on rivers and lakes and a trip to a pond improved by man.

How to breed fish. Organization of a reservoir for fish breeding. Protection and care of the lake. Video (00:53:48)

How to breed fish. Organization of a reservoir for fish breeding. Protection and care of the lake. Fish with us - a channel about fishing for carp, pike, catfish and many other types of fish. On the channel you will see and hear how and what to catch pike perch, where catfish and burbot hide, how to choose places for winter fishing, what gear to fish with, what bait and bait to use.

Reservoir protection. Video (00:06:35)

The importance and protection of fresh water bodies. Video (00:01:47)

Social video. Water protection. Video (00:03:00)

Protection of the main source of water for Moscow. Video (00:00:58)

The work of private security officers to ensure the security of objects in the water area

Slide 2

Functions of fresh water bodies

Freshwater bodies perform several functions. On the one hand, rivers and lakes form an important part of the water cycle in nature.

Slide 3

On the other hand, it is an important environment for life on the planet with its own unique complex of living organisms.

Slide 4

Large rivers and lakes are a kind of heat trap, since water has a high heat capacity. On cold days, the temperature near bodies of water is higher, as the water releases stored heat, and on hot days, the air above lakes and rivers is cooler due to the fact that the water accumulates excess heat. In spring, lakes and rivers become resting places for migratory birds. waterfowl, which migrate further north, into the tundra, to nesting sites.

Slide 5

Fresh water sources

Rivers and lakes serve as the only accessible source of fresh water on our planet. Currently, many rivers are blocked by hydroelectric dams, so the water in the rivers plays the role of a source of energy.

Slide 6

Nature of reservoirs

Picturesque banks of rivers and lakes allow people to enjoy the beauty of nature. That is why one of the most important values terrestrial reservoirs are a source of beauty.

Slide 7

Transport function of rivers

In the Arkhangelsk region, in addition to the listed functions, rivers play the role of transport routes along which various goods are transported.

Slide 8

Previously, timber rafting was carried out along the Onega, Northern Dvina and other rivers. With this method, a large number of logs were independently floated downstream during the spring flood. Thus, wood was delivered free of charge from logging areas to large sawmills in Arkhangelsk. This method of floating trees caused irreparable damage to nature. The bottom of the rivers where moth rafting was carried out was heavily clogged with rotting logs. Such rivers became summer period unnavigable. As a result of wood rotting, there was a low oxygen content in the water.

Slide 9

Consequences of mole alloy

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