Building a Green Defense Together for Pakistan

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Dr. Farrukh A. Chishtie

Pakistan stands at a defining moment in its history. While our nation has overcome countless political, economic and security challenges, another threat has steadily emerged over recent decades that transcends provincial boundaries, political affiliations and generations. Climate change has become one of the greatest threats to Pakistan's future. How do we build a lasting defense against this existential threat?

It is changing the way our rivers flow, altering rainfall patterns, increasing the frequency of devastating floods and droughts, intensifying heatwaves, worsening air pollution, reducing agricultural productivity, degrading biodiversity and placing immense pressure on our already limited water resources.

The evidence surrounds us. The catastrophic floods of 2022 displaced millions of people and damaged infrastructure across vast areas of the country. More recently, severe monsoonal flooding, intense heatwaves and prolonged dry spells have continued to remind us that climate change is no longer a future concern but a present-day reality affecting every province of Pakistan. Urban centres experience dangerous heat island effects, rural communities struggle with declining groundwater reserves, forests continue to disappear, and biodiversity that has supported our ecosystems for centuries is under increasing pressure.

These environmental crises should not be viewed as isolated problems. Floods, droughts, air pollution, declining rainfall, water scarcity, disappearing wildlife and degraded forests are interconnected symptoms of the same environmental imbalance. Solving one problem while ignoring the others will only provide temporary relief. Instead, Pakistan requires a comprehensive national strategy that recognizes the deep connections between climate, water, ecosystems and human well-being.

This strategy can be summarized in a single concept: Building a Green Defense Together for Pakistan.

Traditionally, national defense has been associated with protecting our borders and ensuring the safety of our people from external threats. Yet climate change presents a different kind of challenge. Rising temperatures, environmental degradation and ecosystem collapse threaten food security, economic development, public health and national stability. These dangers cannot be overcome through conventional infrastructure or emergency responses alone. They require strengthening nature itself as one of Pakistan's greatest allies.

A green defense is built upon healthy forests, abundant indigenous vegetation, thriving wetlands, protected rivers, sustainable agriculture, conserved biodiversity, secure groundwater reserves and communities that actively participate in protecting their environment. It recognizes that every indigenous tree planted, every litre of rainwater harvested, and every natural ecosystem restored contributes directly to Pakistan's long-term resilience.

Importantly, this vision is not solely the responsibility of governments. Every citizen has a role to play. Farmers, students, teachers, engineers, health professionals, religious leaders, businesses, civil society organizations and local governments all contribute to strengthening Pakistan's environmental resilience. Climate action is most successful when it becomes a shared national responsibility rather than a task delegated to a single ministry or department.

Subh-e-Nau has advocated this philosophy for more than two decades through campaigns promoting indigenous plantation, environmental stewardship, rainwater harvesting, groundwater recharge, urban forestry, biodiversity conservation and sustainable community participation. One of its landmark achievements was advocating for the establishment of National Plantation Day, observed annually on August 18, providing a national platform to unite citizens in restoring Pakistan's green heritage. However, National Plantation Day represents much more than planting trees on a single day. It symbolizes a commitment to rebuilding Pakistan's natural defenses throughout the entire year. It encourages every citizen to become a guardian of forests, water resources and biodiversity, recognizing that environmental stewardship is both a patriotic duty and an investment in future generations.

This cover story explores how Pakistan can build this Green Defense through indigenous plantation, water conservation, rainwater harvesting, biodiversity restoration, urban forestry and collective national action. Together, these interconnected strategies offer one of the most practical, affordable and sustainable pathways toward climate resilience. They remind us that protecting nature ultimately means protecting ourselves.

In 2005, Subh-e-Nau launched its Indigenous Plantation Campaign with Prime Minister Shaukat Aziz by planting a Kachnar tree, reaffirming its commitment to environmental conservation and a greener, more sustainable Pakistan

Trees Are Pakistan's First Line of Defense

Throughout history, forests have quietly protected civilizations. They stabilize mountains, regulate rivers, moderate temperatures, recharge groundwater, purify the air and provide habitat for countless species that sustain healthy ecosystems. Yet despite these remarkable services, forests are often undervalued until they disappear. Pakistan's environmental challenges clearly demonstrate that protecting and restoring forests is no longer simply an ecological priority. It is a national necessity.

Pakistan currently possesses only a fraction of the forest cover recommended internationally. While approximately 25 percent forest cover is considered desirable for ecological stability, Pakistan remains far below this threshold. Decades of deforestation driven by urban expansion, illegal logging, agricultural encroachment and population growth have weakened one of the country's greatest natural defenses against climate change.

The consequences have become increasingly visible. Forest removal accelerates soil erosion, destabilizes mountain slopes, increases landslide risks and allows rainfall to flow rapidly across landscapes instead of being gradually absorbed into the soil. During heavy monsoon events this contributes directly to flash floods that destroy roads, bridges, agricultural land and entire communities. Healthy forests, by contrast, act like giant natural sponges. Their extensive root systems increase soil stability, enhance groundwater recharge and slow runoff, reducing the destructive force of floodwaters before they reach populated areas.

Trees also provide an essential defense against another growing threat: extreme heat. As Pakistan experiences longer and more intense heatwaves, urban areas are becoming increasingly vulnerable to dangerous temperatures caused by the urban heat island effect. Roads, concrete buildings and asphalt surfaces absorb and retain enormous amounts of heat throughout the day. Indigenous urban forests help reverse this process by providing shade, cooling surrounding air through evapotranspiration and improving human comfort while reducing energy demand for cooling buildings. This is particularly important for rapidly growing cities such as Karachi, Lahore, Islamabad, Rawalpindi, Faisalabad and Peshawar.

Forests simultaneously improve air quality by capturing particulate matter and absorbing carbon dioxide, nitrogen oxides and other pollutants. As Pakistan continues to battle worsening air pollution and prolonged smog seasons, especially across Punjab and northwestern regions, expanding indigenous tree cover offers an important complementary strategy alongside reducing industrial and transportation emissions.

Equally important is the choice of species. Not all trees provide equal ecological benefits. Subh-e-Nau has consistently emphasized that plantation efforts should prioritize indigenous species adapted to Pakistan's diverse ecological regions. Native species support local wildlife, strengthen ecosystem stability, require less maintenance and avoid unintended ecological consequences associated with invasive or exotic plants. The experience of invasive species such as paper mulberry illustrates how introducing non-native trees can worsen allergies, suppress native vegetation and reduce biodiversity. Indigenous species restore ecological balance while supporting pollinators, birds, mammals and countless other organisms that form healthy ecosystems.

This philosophy has guided Subh-e-Nau's nationwide plantation campaigns for many years. Rather than focusing solely on planting large numbers of trees, emphasis has been placed on planting the right trees in the right places while ensuring their long-term survival. Sustainable plantation requires community ownership, ongoing maintenance and environmental education. Planting a tree is only the beginning. Nurturing it into maturity is what ultimately strengthens Pakistan's Green Defense.

National Plantation Day embodies this vision. Every August 18 provides an opportunity for citizens, schools, universities, government departments, businesses and local communities to come together around a common purpose that transcends politics, ethnicity and geography. Each tree planted becomes a living investment in cleaner air, safer communities, healthier ecosystems and greater climate resilience.

In the years ahead, Pakistan's security will depend not only upon technological advancement and economic development, but also upon restoring the natural systems that have protected our civilization for centuries. Our forests are not merely landscapes to admire. They are living infrastructure, quietly defending our water, climate, biodiversity and future every single day.

Water Conservation and Rainwater Harvesting: Every Drop Strengthens the Green Defense

Trees cannot survive without water, and neither can civilizations. Throughout Pakistan's history, water has shaped settlements, agriculture, ecosystems and economic prosperity. Today, however, water security has become one of the country's greatest environmental challenges. Population growth, climate change, declining groundwater levels, inefficient water use and changing rainfall patterns are placing unprecedented pressure on freshwater resources. Building Pakistan's Green Defense therefore requires that plantation and water conservation become two inseparable national priorities.

For decades, environmental discussions have often treated forests and water as separate issues. In reality, they are intimately connected. Forests depend upon reliable water supplies for their survival, while healthy forests simultaneously protect watersheds, recharge aquifers and regulate streamflow. Likewise, conserving water increases the survival of newly planted trees, while expanding tree cover improves the long-term sustainability of Pakistan's water resources. Success therefore depends on pursuing both strategies together rather than independently.

Rainwater harvesting represents one of the simplest, most affordable and most effective approaches for strengthening Pakistan's climate resilience. During every monsoon season, enormous quantities of rainwater rapidly flow across roads, rooftops and urban surfaces before entering drainage systems and rivers. Instead of allowing this valuable resource to be lost, communities can capture rainfall from rooftops, schools, mosques, government buildings and commercial centres for later use. Harvested rainwater can irrigate trees, replenish groundwater, support household needs and reduce pressure on municipal water supplies. Subh-e-Nau has advocated integrating rainwater harvesting alongside National Plantation Day for more than a decade, recognizing that successful plantation campaigns require secure water supplies to ensure long term tree survival.

Groundwater recharge is equally important. Across much of Pakistan, excessive extraction has caused aquifers to decline steadily while natural recharge has diminished because of urbanization and the replacement of permeable soils with concrete and asphalt. Recharge wells, infiltration ponds, restored wetlands and permeable landscapes allow rainwater to slowly penetrate the soil, replenishing underground water reserves rather than contributing to flash flooding. These nature-based approaches simultaneously reduce flood risks while increasing water availability during dry seasons.

Water conservation begins at home. Every household can contribute to Pakistan's Green Defense through simple daily actions. Water used to wash fruits and vegetables, excess drinking water and even water from ablution can irrigate gardens and young trees rather than entering drainage systems. Greywater reuse, efficient irrigation techniques and fixing leaking pipes collectively save millions of litres each year. These practices not only conserve precious water but also nurture the indigenous trees that will protect future generations from climate change.

Agriculture, which consumes the majority of Pakistan's freshwater resources, also offers enormous opportunities for conservation. Modern irrigation methods such as drip irrigation, laser land levelling and improved water scheduling can dramatically reduce water consumption while maintaining or increasing crop productivity. Protecting rivers from pollution, restoring wetlands and improving watershed management further strengthen the nation's hydrological resilience.

Building Pakistan's Green Defense therefore means recognizing a simple truth: every tree planted requires water, and every drop of water conserved supports new life. National Plantation Day should evolve into a broader celebration of environmental stewardship where plantation, rainwater harvesting, groundwater recharge and water conservation become interconnected national activities. Every citizen can participate, and every litre conserved becomes an investment in Pakistan's greener, safer and more resilient future.

Forests Create Water: Restoring Nature's Climate Engine

One of the greatest misconceptions about forests is that they merely depend upon rainfall. In reality, forests actively help create the very conditions that produce rainfall. They function as living climate regulators, recycling water through the atmosphere, moderating temperatures and maintaining the delicate balance between land, water and weather. Understanding this relationship fundamentally changes how we think about plantation. Trees are not simply passive recipients of rain; they are active participants in the water cycle itself.

Through the natural process of evapotranspiration, trees absorb water from the soil and release water vapour into the atmosphere through their leaves. This moisture contributes to cloud formation and helps sustain regional rainfall systems. Large forests continuously recycle atmospheric moisture, allowing water to fall as precipitation many times as it travels across landscapes. When forests disappear, this recycling process weakens, resulting in hotter conditions, lower humidity and increasingly irregular rainfall patterns.

Healthy forests also cool the surrounding environment. Their shade reduces surface temperatures, while evaporation from leaves removes heat from the atmosphere. These cooling effects are especially valuable as Pakistan experiences increasingly severe heatwaves driven by climate change. Cooler landscapes not only improve human comfort but also reduce evaporation losses from soils and reservoirs, allowing precious water resources to remain available for longer periods.

Equally important is the role forests play in protecting watersheds. Rain falling onto forested land follows a very different pathway than rain falling onto bare ground or concrete surfaces. Forest soils, enriched with organic matter and extensive root systems, absorb large quantities of rainfall like natural sponges. Water infiltrates slowly into underground aquifers before gradually feeding streams and rivers throughout the year. By contrast, deforested landscapes generate rapid surface runoff, increasing erosion, transporting sediments into reservoirs and dramatically increasing flood intensity.

Pakistan's devastating floods provide repeated evidence of this relationship. Deforestation throughout upper watersheds has reduced the landscape's ability to regulate water movement. As a result, heavy rainfall increasingly produces destructive flash floods, landslides and severe soil erosion. Simultaneously, the loss of forests contributes to prolonged droughts because less water infiltrates underground to sustain river flows during dry periods. Thus, floods and droughts are not contradictory phenomena but two consequences of the same ecological imbalance.

Restoring forests therefore represents far more than an environmental project. It is an investment in Pakistan's future water security. Indigenous reforestation across mountain watersheds, river catchments, urban landscapes and degraded lands strengthens the entire hydrological cycle. Combined with rainwater harvesting, groundwater recharge and wetland restoration, forests become part of a comprehensive climate adaptation strategy that simultaneously reduces flooding, improves water availability, supports agriculture and protects biodiversity.

Scientific understanding increasingly recognizes that climate, forests and water form one integrated system. Attempts to solve water shortages without restoring forests will remain incomplete. Likewise, plantation campaigns that ignore water conservation cannot achieve their full potential. Building Pakistan's Green Defense therefore requires reconnecting these natural systems through thoughtful planning, community participation and long-term stewardship.

Every indigenous forest restored today becomes tomorrow's source of cleaner air, healthier soils, more reliable rainfall and stronger climate resilience. By allowing nature to rebuild its own climate engine, Pakistan can harness one of the most powerful and cost-effective solutions available for securing its environmental future.

Building a National Green Movement

Environmental recovery cannot be achieved by governments alone. While national policies, legislation and investment provide the foundation, the true strength of Pakistan's Green Defense lies within its people. Climate resilience begins in neighborhoods, schools, villages, universities, businesses, places of worship and households where ordinary citizens make extraordinary contributions toward protecting their environment. Building a Green Defense therefore requires transforming environmental stewardship into a national movement that inspires participation throughout the year.

National Plantation Day, observed every August 18, provides the perfect platform for such a movement. Rather than viewing it as a ceremonial event, it should become the annual beginning of year-round environmental action. Every school can organize indigenous plantation drives. Universities can establish living laboratories that monitor tree survival, groundwater recharge and biodiversity. Businesses can adopt urban forests, restore degraded landscapes and incorporate environmental stewardship into their corporate responsibility programs. Religious institutions can promote environmental care as both a civic and moral responsibility, emphasizing that caring for creation is inseparable from caring for humanity.

Local governments occupy a particularly important role. Municipal authorities can identify degraded lands, expand parks, establish roadside plantations, protect wetlands and install rainwater harvesting systems in public buildings. Communities should be encouraged to adopt nearby green spaces, ensuring long-term maintenance rather than short-term plantation campaigns. Modern technology can further strengthen these efforts through geographic information systems, satellite monitoring and citizen science initiatives that track plantation success and groundwater recovery.

Young people deserve special attention. They will inherit the consequences of today's environmental decisions, making them the natural leaders of tomorrow's Green Defense. Environmental education should therefore extend beyond classrooms into practical conservation projects that cultivate lifelong stewardship. Through collective participation, Pakistan can transform environmental protection into a defining feature of national identity.

A National Action Plan for Pakistan's Green Defense

Building climate resilience requires coordinated action across every sector of society. Pakistan already possesses the scientific knowledge and practical experience necessary to strengthen its environmental future. What is now required is integration and sustained implementation.

The federal and provincial governments should expand National Plantation Day into a comprehensive Green Defense Strategy that integrates indigenous plantation, rainwater harvesting, groundwater recharge, biodiversity conservation, urban forestry and climate adaptation within a single national framework. Every ministry should contribute according to its mandate. Forest departments should restore degraded ecosystems. Education departments should integrate environmental stewardship into school curricula. Housing authorities should require rainwater harvesting and indigenous landscaping in new developments. Agricultural agencies should promote efficient irrigation and agroforestry. Health authorities should recognize environmental restoration as preventive public health policy.

Communities must equally become active partners. Every household can conserve water, reuse greywater where appropriate, plant indigenous trees and protect neighborhood green spaces. Businesses can invest in sustainable landscapes and reduce their environmental footprints. Universities can provide research that guides evidence-based policy while monitoring the effectiveness of restoration efforts.

Equally important is continuous environmental monitoring. Satellite observations, groundwater monitoring, biodiversity surveys, air quality networks and climate forecasting should be integrated into a national environmental information system. Scientific evidence allows governments and communities alike to evaluate progress, identify emerging risks and adapt management strategies accordingly. A Green Defense is strongest when guided by reliable data, informed citizens and coordinated institutions working toward common national goals.

Climate Security Through Healthy Ecosystems

Pakistan's future security depends upon far more than economic growth or physical infrastructure. Long-term prosperity ultimately rests upon healthy ecosystems capable of supporting agriculture, regulating water supplies, protecting biodiversity and sustaining human well-being. Every forest restored, every wetland protected and every river rehabilitated strengthens the nation's resilience against climate change.

Healthy ecosystems simultaneously reduce floods, moderate droughts, improve air quality, lower urban temperatures, conserve biodiversity and enhance food security. These environmental services represent enormous economic value while requiring comparatively modest investment when compared with repairing disaster damage after each climate emergency.

The Green Defense therefore embraces a holistic understanding of security. Human health depends upon environmental health. Wildlife health depends upon ecosystem integrity. Agricultural productivity depends upon healthy soils, pollinators and reliable rainfall. Water security depends upon forests, wetlands and functioning watersheds. None of these systems operate independently. Protecting one strengthens all the others.

Climate adaptation should therefore move beyond reactive emergency management toward proactive ecosystem restoration. Investing in nature is one of the most cost-effective forms of national infrastructure available. Unlike concrete alone, healthy ecosystems continuously improve with time when properly protected. They become stronger, more resilient and increasingly capable of defending both people and biodiversity against future climate extremes.

Together We Build Pakistan's Green Defense

Every generation is remembered by the legacy it leaves behind. Some generations build roads, cities and institutions. Others protect the natural foundations upon which civilizations depend. Ours has been entrusted with a challenge unlike any before it: ensuring that Pakistan remains environmentally secure in an era of accelerating climate change.

Fortunately, the solutions are already within our reach. Indigenous forests, rainwater harvesting, groundwater recharge, biodiversity conservation, urban forestry and responsible water use are not separate environmental projects. Together they form a living Green Defense that protects communities from floods, droughts, heatwaves, water scarcity, declining biodiversity and air pollution. Every indigenous tree planted, every wetland restored and every litre of rainwater conserved strengthens that defense.

National Plantation Day symbolizes something far greater than planting trees. It represents hope, unity and collective responsibility. It reminds us that environmental stewardship is not the responsibility of governments alone but of every citizen. When millions of Pakistanis work together with a shared vision, individual actions become a national transformation.

Subh-e-Nau has championed this vision for more than two decades through advocacy for National Plantation Day, indigenous afforestation, urban forestry, rainwater harvesting and community environmental action. These initiatives demonstrate that meaningful change begins with citizens working alongside governments, scientists, educators and communities toward a common purpose.

The future of Pakistan will not be determined solely by the challenges we face, but by how we respond to them. Let us therefore commit ourselves to building a nation where forests flourish, rivers flow cleanly, groundwater is replenished, biodiversity thrives, cities become cooler and greener, and future generations inherit a healthier environment than the one we received.

Our greatest defense against climate change is not built from steel or concrete alone. It is rooted in living forests, flowing water, thriving ecosystems and the collective determination of an entire nation. Together, let us build Pakistan's Green Defense.

Plant Indigenous Trees — Strengthening Pakistan's Green Defense

Choosing the right tree is just as important as planting one. Indigenous trees have evolved over thousands of years to thrive in Pakistan's climate and support local wildlife, soils and water cycles. They generally require less maintenance, are more resilient to local pests and diseases, conserve biodiversity and provide habitat for birds, pollinators and other beneficial organisms.

Subh-e-Nau recommends prioritizing indigenous species in all plantation campaigns and gradually replacing invasive or exotic species wherever appropriate.

Northern Pakistan (Mountain Forests)

These species stabilize slopes, reduce erosion and protect watersheds.

• Deodar (Cedrus deodara)

• Kail or Blue Pine (Pinus wallichiana)

• Cheer or Chir Pine (Pinus roxburghii)

• Fir (Abies pindrow)

Punjab, Khyber Pakhtunkhwa and the Potohar Region

Excellent species for urban forestry, roadside plantation and community parks.

• Peepal (Ficus religiosa)

• Banyan (Bur) (Ficus benghalensis)

• Shirin (Albizia lebbeck)

• Kachnar (Bauhinia variegata)

• Sukh Chain (Pongamia pinnata)

• Indigenous Black Mulberry (Morus nigra)

Sindh, Karachi and Baluchistan

These drought-tolerant native species help restore degraded landscapes while supporting biodiversity.

• Khor (Acacia senegal)

• Kikar or Bhabar (Vachellia nilotica formerly Acacia nilotica)

• Kandi or Jandi (Prosopis cineraria)

Valuable Native Trees

These species provide ecological, medicinal and community benefits.

• Sumbul (whose seed fibres have traditional economic value)

• Black Mulberry, valued for its edible fruit and traditional medicinal use for sore throats and respiratory infections

Avoid Invasive Exotic Species

Fast-growing exotic species may appear attractive, but they often damage Pakistan's native ecosystems.

Examples include:

• Paper Mulberry (Broussonetia papyrifera) — associated with severe pollen allergies and suppression of native vegetation.

• Mesquite or Wilayati Keeker (Prosopis juliflora) — invasive in Sindh and Balochistan, where it displaces native vegetation and reduces biodiversity.

A Simple Rule

Plant the right tree, in the right place, for the next hundred years.

Every indigenous tree planted strengthens Pakistan's forests, protects biodiversity, improves air quality, conserves water, reduces flooding, moderates heatwaves and builds a stronger Green Defense for future generations.