The Himalayas, as a great climatic divide affecting large systems of air and water circulation, aid in determining meteorological conditions in the Indian subcontinent to the south and the Central Asian highlands to the north. The Great Himalaya Range obstructs the passage of cold continental air from the north into India in winter and also forces the southwesterly monsoon (rain-bearing) winds to give up most of their moisture before crossing the range northward. The result is heavy precipitation (both rain and snow) on the Indian side but arid conditions in Tibet. Extreme weather events have been caused by human-caused climate change in nearly all Indian states, particularly those in the Himalayan range, which is known to be an ecologically important but fragile region. In this article, we will discuss the Role of Indian Himalayan Region in Indian Climate which will be helpful for UPSC exam preparation.

Indian Himalayan Region (IHR) Services

• Aside from numerous goods, the Indian Himalayan Region (IHR) provides a plethora of services not only to Himalayan residents but also to people living far beyond its borders.
• Among other things, the region's large area under permanent snow cover and glaciers forms a unique water reservoir that feeds several important perennial rivers.
• With its vast green cover, IHR also serves as a massive “carbon sink.”
• IHR is also a significant part of the identified Himalayan Biodiversity Global Hotspot.

Role of IHR in Climate Change

• The region is experiencing environmental issues as a result of a variety of factors, including stress caused by anthropogenic activities.
• Even geologically, the Himalayan ecosystem is the most vulnerable. As a result, the IHR's environmental issues are critical.
• Sustainable management of the Himalayan ecosystem is critical not only for preserving its pristine beauty and spectacular landscapes, but also for ensuring the ecological security of the entire Indian subcontinent.

Influence of Indian Himalayas on Indian Subcontinent

Physical Barriers

• It serves as a compound wall separating India from Central and East Asian countries.
• It also explains the differences in climatic and weather patterns between the Indian subcontinent and the rest of Asia.

Natural Frontier

• Since ancient times, the Himalayas have served as a defensive barrier, protecting India from foreign invasions. History demonstrates that no invaders attacked India after crossing the Himalayas.
• Even though China's aggression is an exception, the importance of the Himalayas cannot be overstated.

Climatic Influence

• The Himalayas have a significant impact on India's climate. Only the presence of the Himalayas makes India a monsoon land.
• It traps the monsoon winds from the Arabian Sea and the Bay of Bengal, forcing them to shed their moisture content within the Indian subcontinent in the form of snow and rain.
• It also prevents cold winter storms from entering India, keeping us safe from severe cold.
• The Himalayas divide the westerly jet streams into two branches, with the southward branch entering India playing a significant role in bringing the monsoon.

Sources Region of Rivers

• The Himalayas serve as a massive reservoir for the great Indian rivers Ganga, Indus, and Brahmaputra.
• They are perennial rivers because of snow melt in the summer and precipitation in the winter.
• These drainage systems are fed by the abundant waterfalls, vast snowfields, and massive glaciers. The Himalayan rivers sustain northern India.

Soil Fertility

• The Himalayas shaped the entire northern plains. On their way down, the Himalayan rivers cut slits in the northern plain. The high fertility of this land is due to these alluvial deposits.
• As a result, it is commonly stated that the northern great plain is a gift from the Himalayas.

Hydroelectric power projects

The Himalayan valley with natural waterfalls is the best location for dam construction. The vast potential of Himalayan rivers provides a large range for the construction of many mainstream dams.

Biodiversity and Vegetation

• The Himalayan ranges are famous for their diverse biodiversity. There is altitudinal vegetation zonation from the tropics to the alpine.
• Forests provide fuel woods, medicinal plants, and a variety of raw materials for forest-based industries.
• The Himalayas also have abundant grazing pastures.

Agriculture

• Because the Himalayas lacks flat land, it offers terraced slopes for cultivation. Rice is the main crop.
• Wheat, maize, potatoes, ginger, and tobacco are also grown. Tea is a unique crop that grows only on hill slopes.
• Many fruits, including apples, pears, peaches, mulberries, cherries, and citrus fruits, are grown in the Himalayan region.

Mineral Resources

• The Himalayan region is rich in valuable mineral resources. Tertiary rocks have a high potential for mineral oil. Kashmir has coal.
• Copper, Cobalt, Nickel, Zinc, Lead, Antimony, Tungsten, Limestone, Gypsum, and Magnetite are also found in the Himalayan region.
• The presence of gold, silver, and other semi-precious and precious stones is also a feature of the Himalayan region.

Tourism

• The beautiful landscapes of the Himalayan Mountains make for an excellent tourist destination.
• The growing popularity of winter sports, snowfall, and a cool climate during the summer months attracts millions of tourists from all over the world.
• Missouri, Shimla, Kulu, Manali, Nainital, Chamba, Ranikhat, Almora, Darjeeling, Mirik, Gangtok, and other hill stations offer a wide range of tourism opportunities due to their scenic beauty and healthy environment.

Pilgrimage

• The Himalayas are known as the "House of Gods." Apart from tourist attractions, the region is densely packed with sacred shrines.
• Famous pilgrim centers in the Himalayas include Kedarnath, Badrinath, Vaishnodevi, Kailash, Amarnath, Tungnath, Uttarkashi, Gangotri, Yamunotri, and others at high altitudes.

How Climate Change is Impacting the Mountain Ecosystem?

• Anthropogenic activities are constantly influencing the Earth's climate. The change in the Mountain ecosystem is an indicator of this effect.
• Mountain ecosystems are extremely vulnerable to climate change due to their altitude, slope, and orientation to the sun.
• Mountain glaciers are melting at unprecedented rates as a result of global warming. It is reducing the area available for the survival of flora and fauna.
• Satellite observations, for example, show that glacier melting in India, China, Nepal, and Bhutan has more than doubled since the turn of the century.
• The melting of glaciers threatens the water security of hundreds of millions of people in countries such as India.
• Because of increased pressure on water resources for irrigation and food production, industrialization, and urbanisation, these effects have become severe.

Reasons for Climatic Disaster in Uttarakhand

• The Uttarakhand mountain ecosystem is threatened by a variety of factors, including seismicity, dam-induced micro seismicity, and landslides.
• The entire state of Uttarakhand is classified as Zones IV and V on India's earthquake risk map. It is prone to floods as well as earthquakes.
• Glacial lake bursting can result in catastrophic flash floods. For example, the 2013 Kedarnath floods were caused by moderate earthquakes in the Tehri dam.
• Despite these threats, the Uttarakhand government has pursued a greater number of hydropower projects without discrimination. For instance, consider the ongoing Tapovan power project.
• In addition, to reduce carbon emissions, India has heavily invested in dam development and hydropower expansion in the Himalayan region.
• If the national plan to build dams in 28 river valleys in the hills is completed, the Indian Himalayas will have one dam every 32 kilometres (The highest density in the world).
• Aside from that, dam life is frequently exaggerated without taking into account the siltation level in the dams. For example, siltation in the Bhakra dam in Himachal Pradesh exceeded expectations by 140 percent.

Conclusion

The government must recognize the vulnerability of the Himalayan mountain ecosystems. Governments must re-prioritize their projects in light of the mountains' potential, local and traditional knowledge, and the region's aspirations. Hydro projects in the Himalayas should be limited to areas with the least impact. Furthermore, instead of destructive large dams and reservoirs, the government should build more low-impact run-of-the-river power projects. Projects that are harmful to the local environment and ecology should not be promoted solely for the sake of development or economic growth.

FAQs

MCQs

1. Which of the following is a primary role of the Himalayas in influencing India's climate?

A) Absorbing heat from the sun
B) Acting as a barrier to cold winds from Central Asia
C) Generating winds that cool the Indian plains
D) Causing drought in northern India

2. How do the Himalayas contribute to the monsoon rainfall in India?

A) By absorbing moisture from the monsoon winds
B) By blocking monsoon winds
C) By forcing moisture-laden winds to rise and condense
D) By creating high-pressure systems

3. Which of the following rivers originates from the Himalayas?

A) Godavari
B) Ganga
C) Narmada
D) Krishna

4. Which factor contributes to the ecological significance of the Indian Himalayan Region?

A) Low biodiversity
B) High desertification
C) Rich biodiversity and unique ecosystems
D) Lack of endemic species

5. How do the Himalayas help stabilize the water supply in northern India?

A) By trapping groundwater
B) By creating artificial lakes
C) By providing a perennial source of water through glacial melt
D) By preventing rainfall

GS Mains Questions and Answers

Q1: Discuss the role of the Himalayas in influencing the Indian climate and monsoon system.

Answer: The Himalayas play a crucial role in influencing the Indian climate by acting as a barrier to cold winds from Central Asia, which keeps the northern plains relatively warm during winter. The mountains also play a pivotal role in the Indian monsoon system. During the summer monsoon, the Himalayas force the moisture-laden winds from the Indian Ocean to rise and cool, resulting in condensation and precipitation. This leads to heavy rainfall in the northern and northeastern parts of India. The Himalayas thus not only help in regulating temperatures but also ensure adequate rainfall, which is essential for agriculture and water resources.

Additionally, the Himalayas act as a natural buffer, preventing arid conditions from spreading to the fertile plains. Without the presence of the Himalayas, the Indian subcontinent would be exposed to cold, dry winds, drastically altering its climate.

Q2: Analyze the significance of the Indian Himalayan Region in maintaining the ecological balance of India.

Answer: The Indian Himalayan Region (IHR) is vital for maintaining India’s ecological balance due to its rich biodiversity, unique ecosystems, and its role in climate regulation. The region supports diverse flora and fauna, many of which are endemic to the area. The forests in the IHR play a crucial role in sequestering carbon dioxide, making it an important carbon sink that helps mitigate climate change.

The IHR also regulates the flow of water to the northern plains by acting as a source of perennial rivers like the Ganga and Yamuna, which are fed by glaciers and snowmelt. These rivers provide water for irrigation, hydropower, and drinking water for millions of people. The forests of the IHR help prevent soil erosion and maintain soil fertility, which is essential for agriculture in the downstream regions.

Q3: Evaluate the challenges faced by the Indian Himalayan Region due to climate change and human activities.

Answer: The Indian Himalayan Region faces several challenges due to climate change and human activities. Climate change has led to rising temperatures in the region, causing the glaciers to retreat at an alarming rate. This poses a significant threat to the water supply in northern India, which relies on glacial melt for its rivers. The loss of glaciers also affects the region’s biodiversity, as many species are adapted to cold environments.

Human activities such as deforestation, unplanned urbanization, and infrastructure development have also taken a toll on the region’s ecological balance. Deforestation leads to soil erosion, landslides, and loss of habitat for wildlife. The increasing demand for resources and land in the region puts further pressure on its fragile ecosystems. Addressing these challenges requires sustainable development practices, conservation efforts, and international cooperation to mitigate the impacts of climate change.

Previous Year Questions on Indian Himalayan Region

1. UPSC CSE Prelims 2019:

Question: Which of the following is a major river system that originates from the Indian Himalayan Region?

A) Godavari
B) Mahanadi
C) Brahmaputra
D) Cauvery

Answer: C

Explanation: The Brahmaputra River originates from the Himalayas in Tibet and flows into India. It is one of the major river systems fed by the glaciers of the Himalayan region.

2. UPSC CSE Mains 2020 (GS Paper 1):

Question: "The Indian Himalayan Region plays a crucial role in ensuring water security for northern India." Discuss the importance of Himalayan rivers in the agricultural and hydropower sectors of India.

Answer: The Indian Himalayan Region is the source of many perennial rivers, including the Ganga, Yamuna, and Brahmaputra. These rivers are crucial for ensuring water security in northern India, providing a consistent water supply for irrigation, hydropower generation, and drinking water. The Himalayan rivers sustain agriculture in the fertile plains, which is the backbone of the Indian economy. In addition, these rivers are harnessed for hydropower projects that provide a significant portion of India’s renewable energy. The water from these rivers also supports industrial activities and sustains ecosystems downstream. The conservation of Himalayan glaciers and rivers is therefore essential for the long-term water security and economic stability of India.