BIOSPHERE

 

What is Biosphere?

The biosphere is the region of the earth where life can exist and grow. It is the part of the planet where life is capable of existing. The biosphere is also known as the Ecosphere, which means the constitution of all the ecosystems exists worldwide. According to some definitions, the biosphere is practically a closed structure in terms of matter, with few inputs and outputs. It is an open system that uses photosynthesis to absorb solar energy at a rate of about 130 Terawatts per year. The system is self-regulating and nearly in energy equilibrium. The biosphere, according to the broad sense of physiology, is the ecological system that includes all living creatures and their relationships, including their interactions with the lithosphere, geosphere, hydrosphere, and atmosphere.What are Biosphere and Its Components?

Earth was a barren planet with shallow seas and a thin band of gases before life appeared there. These gases were primarily Carbon dioxide, Carbon monoxide, Nitrogen, Hydrogen sulfide, and water vapor. The planet was hostile and barren. The lithosphere (rock and soil), hydrosphere (water), and atmosphere make up this entirely inorganic state of Earth, which is known as the geosphere (the air). The early Earth received constant solar radiation, and over millions of years, chemical and physical processes created the earliest signs of life.Components of Biosphere

It is made up of the parts of the earth where life exists not only human but also plant and animal life. It includes deep forests to grassland from ocean to rain forests from mountains to plains. Scientists have described the place where life exists on Earth i.e. Biosphere as a combination of the lithosphere, atmosphere, and hydrosphere.

Lithosphere 

It is the terrestrial component of the Biosphere, which means it contains solid ground masses like Islands and Continents. Its lower mantle and core are the only parts that do not support life and are not, therefore, a part of the biosphere. Everything else supports life by giving it shelter and nourishment, from the smallest germs to the largest beasts and huge trees.

Atmosphere

The gaseous covering over the Earth is called the atmosphere. The atmosphere consists of various gases like oxygen, carbon dioxide, etc to help living organisms like Plants, human beings, etc to survive.

However, the upper part of the atmosphere has a low oxygen content, which is why flying birds can be found below 200 m of the Earth’s surface. In addition to providing gases for respiration, the atmosphere, which is a component of the biosphere, has a specific function in shielding living things from the sun’s damaging UV radiation.

Hydrosphere

All of the Earth’s waters are referred to as the hydrosphere. Consequently, it is also known as the aquatic region. But it also contains solid formations, such as glaciers. The hydrosphere, which supports life, is crucial in controlling Earth’s temperature. Additionally, it provides the water needed by all living organisms.

 Biosphere Resources

Important resources are provided by the biosphere. Many people depend on the biosphere for essentials including food, medicine, building supplies, and fuel.  All food comes from the biosphere, with the exception of salt, yet developed societies choose farming over scavenging.

The biosphere, which extends from a few kilometers into the sky to deep-sea vents, is a relatively small layer of the Earth’s surface that sustains life. The biosphere is a large-scale ecosystem made up of living things (biotic) and the non-living (abiotic) elements that sustain them.

Biosphere Reserves in India

A biosphere reserve is a populated area made up of both land and coastal ecosystems that provides a means for sustainable use. 

The state governments provide systematic maintenance for the biosphere reserves, which are highly generally known. These are primarily used for research on land and in the sea. When the first conference on the use of natural resources was held in 1968, the maintenance of the biosphere reserve began. This serves as a reference point for analyzing the changes in other natural ecosystems and is primarily designed to safeguard all life forms in their natural state.

The biosphere is a small section of the earth’s surface where soil, water, and air work together to support life. Only in this region is life possible. There are many different types of life, going from fungi and bacteria to huge animals.

Here, is the list of 18 notified biosphere reserves in India:

1.Nilgiri Biosphere Reserve (Tamil Nadu, Kerala,   and Karnataka)

2.Nanda Devi Biosphere Reserve (Uttarakhand)

3.Gulf of Mannar Biosphere Reserve (Tamil Nadu)

4.Nokrek Biosphere Reserve (Meghalaya)

5.Sundarbans Biosphere Reserve (West Bengal)

6.Manas Biosphere Reserve (Assam)

7.Simlipal Biosphere Reserve (Odisha)

8.Dihang-Dibang Biosphere Reserve (Arunachal Pradesh)

9.Pachmarhi Biosphere Reserve (Madhya Pradesh)

10.Achanakmar-Amarkantak Biosphere Reserve (Madhya Pradesh and Chhattisgarh)

11.Great Rann of Kutch Biosphere Reserve (Gujarat)

12.Cold Desert Biosphere Reserve (Himachal Pradesh)

13.Khangchendzonga National Park (Sikkim)

14.Agasthyamalai Biosphere Reserve (Kerala and Tamil Nadu)

15.Great Nicobar Biosphere Reserve (Andaman and Nicobar Islands)

16.Dibru-Saikhowa Biosphere Reserve (Andaman and Nicobar Islands)

17.Seshachalam Hills (Andhra Pradesh) 

18.Panna Biosphere Reserve (Madhya Pradesh)

What is the Importance of the Biosphere?

The interactions between living things and their environment are connected by the biosphere. The lives of living things can be greatly affected by a small alteration in the environment. The biosphere is crucial for all life because of this relationship, though. Following is a list of some of them:

The ecosystem required for survival is provided by the biosphere. The biosphere’s climate is something that living things should be able to adapt to. Ecosystems support biodiversity, and the biosphere provides a dependable source of nutrition for all life on Earth. The term “biodiversity” refers to biological variation.

Biosphere reserves are restricted places for the preservation of flora and fauna. Additionally, it contributes in maintaining the traditional way of living of the local tribes. They guard the biodiversity of the area. The greatest level of the ecological structure is the biosphere. It includes each type of species and every biome on the planet.

The biosphere supports life on Earth by contributing to the management of the hydrological (water) cycle, soil health, and composition of the atmosphere. The biosphere is a small area of the earth’s surface where soil, water, and air work together to support life. Only in this region is life possible.