What is an agroforestry landscape?

Summary: Agroforestry landscape is a model that combines trees, agricultural crops, vegetation, and natural ecosystems in the same space to create a sustainable, multi-layered environment, increase biodiversity, and improve soil health. Beyond its agricultural value, this model also helps regulate the microclimate, retain water, reduce erosion, and create a landscape closer to nature. This approach is suitable for farmstays, forest gardens, eco-resorts, and modern regenerative agriculture models.

In the context of ongoing global climate change and resource degradation, traditional monoculture agricultural production models are increasingly revealing their limitations. Therefore, the concept of agroforestry landscapes has emerged as a strategic solution, harmonizing the needs of economic development and environmental protection. So, what exactly is an agroforestry landscape? What is its structure, and how important is its role in human life?
Join KLa as we delve into this colorful ecological mosaic, from its most fundamental concepts to the complex relationships within it.

1. Fundamental concepts of agroforestry landscapes

To fully understand agroforestry landscapes, we first need to familiarize ourselves with a crucial concept in landscape ecology: the patchwork.

1.1 Patch – the core component

Patch A space is a defined area in which physical objects (plants, animals, rocks, roads, etc.) exist, possessing characteristics distinct from those in adjacent spaces. Imagine a giant carpet with countless patches of color, size, and shape; each patch is a small, individual piece.
In ecology, patches are classified based on their function and nature:

Structural patchwork: Formed from the physical features of the landscape.
Functional patch: Defined by the ecological role within the area.
Resource patch: Distribution based on available resources.
Habitat patch: A place where organisms live.
Corridor patch: Connecting strips between other patches (e.g., hedges, canals).

Within the scope of agroforestry landscapes, the patchwork is further divided into three main types, clearly reflecting the interaction between nature and humans:

What is an agroforestry landscape? How to create a sustainable ecosystem?

Abiotic patches: These are patches containing non-living matter, including structures (houses, roads, bridges), terrain (rocky mountains, hills), and irrigation systems (ponds, lakes, dams). They form the physical framework and space for the entire landscape.
Biotic patches: These are fragments of living organisms such as plants, animals, and microorganisms. These patches are incredibly diverse:
- Forest patches: Areas of natural or planted forests.
- Crop plots: These include rice paddies, corn fields, orchards, and plots of long-term industrial crops.
- Animal patches: Areas used for grazing livestock, poultry, or areas where wild animals congregate.
Cultural patches: These are special patches where people live and express their cultural values, production practices, and indigenous knowledge. Cultural patches are closely related to abiotic patches, especially buildings, and are the central control points for the activities of the entire landscape.

1.2 Overall definition of agroforestry landscape

From assembling the aforementioned patches, we can define:

Landscape Agroforestry It is an ecological landscape mosaic, formed by a diverse array of abiotic and biotic elements organically interrelated. Through the influence and control of ecological factors (natural and man-made), this landscape aims to produce products that meet the food, economic, humanistic, and environmental needs of human society.

The defining characteristic of this type of landscape is its diversity and mixed nature. Unlike purely forest or purely agricultural landscapes (especially large-scale, intensive farming areas) which are highly homogeneous, agroforestry landscapes appear as a patchwork, mottled tapestry, where forests are interspersed with cultivated fields, fish ponds alongside rice paddies, and orchards surround villages.

This difference can be clearly seen through a comparison:

A purely agricultural landscape: The region's vast rice fields. Mekong Delta, where there are rice production fields on a scale of up to 250,000 hectares with a very high degree of uniformity. Or like An Giang province, known as the "Rice Kingdom," with a rice cultivation area of over 1.3 million hectares, mainly high-quality rice grown 2-3 times a year.
Pure forest landscape: Dense, old-growth forests with minimal human intervention.
Agroforestry landscapes: A harmonious blend of terraced rice fields, corn fields, tea hills, orchards, protective forests, and stilt houses. This image is very typical in the mountainous provinces of northern Vietnam such as Son La, Hoa Binh, and Yen Bai.

2. The irreplaceable role of agroforestry landscapes

The existence and development of agroforestry landscapes is not accidental. They simultaneously address the three pillars of sustainable development: economic, environmental, and social.

2.1 Economic role – livelihood diversification

This is the most obvious role. Not dependent on just one or two types of crops, agroforestry landscapes offer an incredibly diverse range of products:

Foodstuffs: Rice, corn, cassava, green vegetables, meat, fish, eggs…
Wood and firewood: From planted forests, natural forests, and scattered trees.
Materials and fibers: Bamboo, rattan, sedge, cotton…
Traded goods: Coffee, tea, rubber, cashew nuts, honey, and many other high-value agricultural products.

This diversification helps households spread out market and seasonal risks. When the price of one commodity falls, they still have other sources of income to ensure their livelihood.

2.2 The role of the environment – protecting and restoring ecosystems

If monoculture agriculture degrades the land and leads to biodiversity loss, then agroforestry landscapes act as a shield and a resource regeneration factory:

Protecting habitats: Forest systems and vegetation help limit soil erosion and landslides, regulate water flow, and minimize the damage caused by flash floods and droughts.
Creating beautiful landscapes and recreational value: The areas interspersed with tea hills, pine trees, and terraced rice fields create a space that is both romantic and intimate, attracting tourists and providing a wonderful place to relax and relieve stress.
Ecological restoration and regulation: Agroforestry landscapes help regulate the microclimate, maintain soil fertility through nitrogen fixation from legumes, regenerate groundwater, and purify the air.
Biodiversity conservation: The diversity of the patches creates many different habitats, providing a home for a wide variety of wild plants and animals. This ensures the evolution and adaptability of organisms to climate change.

To create a truly sustainable organic landscape, we must first focus on soil health and substrate – the foundation of all living things. Nutrient-rich, loose substrates help plants grow well, which in turn leads to a healthy entire ecosystem.

2.3 Social and cultural role – connecting people and nature

Beyond just trees and land, agroforestry landscapes are also places for preserving culture and building communities:

Preserving indigenous knowledge: This is a living treasure trove of farming practices on sloping land, crop rotation, intercropping, and the use of native plants by ethnic minority communities.
Nature education: Agroforestry landscapes create a welcoming environment, helping the younger generation understand the value of nature, live in harmony with it, and be responsible for their surroundings.
Promoting intangible cultural identity: Festivals, customs, cuisine, and even lullabies and folk tales are often associated with a specific ecological region, where agroforestry is the foundation.

3. Components that make up an agroforestry landscape

A complete landscape is formed from a combination of natural and man-made elements.

3.1 Natural Ingredients

These are fundamental elements that existed objectively before human intervention:

Climate and weather: Light, temperature, rainfall, humidity, wind… These are intangible factors but they govern all activities within the landscape. They determine the types of crops, seasons, and even natural ecological processes.
Topography: Altitude, slope, slope direction, and topographic fragmentation directly affect crop placement, terrace construction, and drainage capacity.
Land: Soil type (basaltic red soil, gray soil, alluvial soil, colluvial soil, etc.), mechanical composition, fertility, pH, salinity, etc., are the most decisive factors for agricultural and forestry production.
Natural vegetation includes: old-growth forests, secondary forests, shrublands, grasslands, and aquatic plants. These are valuable genetic resources and play a crucial role in maintaining ecosystem services.
Natural fauna: Mammals, birds, reptiles, insects, etc., help with pollination, seed dispersal, and pest control.
Hydrological elements: Rivers, streams, creeks, waterfalls, and natural lakes create a network of water sources and migration corridors for organisms.

3.2 Artificial Ingredients

These are elements created by humans or modified from nature, reflecting cultural identity and production purposes:

Crops: Very diverse, ranging from short-term crops (rice, corn, cassava, soybeans, peanuts, sesame) to perennial crops (coffee, tea, rubber, pepper, fruit trees, timber trees such as teak, pine, acacia).
Livestock: Buffaloes, cows, pigs, goats, chickens, ducks, and even specialty species such as porcupines, snakes, and turtles in VAC (Garden - Pond - Livestock) models.
Farming methods include: terraced fields, hillside fields, stone wall farming, mixed gardens, and forest plantations combined with grazing.
People and culture: These are the central components, both influenced by the environment and acting as the primary agents in changing and shaping the landscape according to development goals.
Construction project:
- Transportation: Roads, bridges, docks, and harbors.
- Irrigation: Ponds, artificial lakes, dams, pumping stations, canals, sluice gates.
- Architecture and infrastructure: Houses, barns, power poles, telecommunication lines, transformer stations.

This combination of natural and artificial components creates a complex yet smoothly functioning system.

A prime example from Son La shows that: Rivers and streams provide water and prevent landslides; rocky mountainous land is suitable for upland corn; thick, fertile soil is ideal for hybrid corn; and irrigation systems, housing, and roads are indispensable links connecting the entire ecosystem.

4. Structure of agroforestry landscapes

To analyze agroforestry landscapes, we need to consider them in terms of both spatial structure (location arrangement) and temporal structure (seasonal changes).

4.1 Shape, size, and color of the patches

Shapes vary widely: circular (lakes, utility poles), elongated (roads, canals, rows of trees), square, rectangular (fish ponds, rice paddies, planted forests).
The sizes also vary widely, from a small vegetable patch to a forest spanning tens of hectares.
The colors are constantly changing: the deep green of the old forest, the light green of newly planted rice, the golden yellow of ripe rice, the reddish-brown of freshly plowed land, the silvery white of the surface of ponds and lakes. This blend of colors creates vibrant scenes, especially in agricultural areas like Sarraud and Vaucluse (France).

4.2 Scale of an agroforestry landscape

Defining the boundaries of an agroforestry landscape doesn't have a standard size, but it's crucial to ensure an organic relationship between the patches. If a patch is too large, it can homogenize the surrounding patches, disrupting the diverse mosaic nature of the agroforestry landscape. Therefore, the scope is often considered within limits such as a river basin, a sub-basin, or ecological transition zones.

Based on scale, they are divided into 3 levels:

Large scale: The scale of a district, several communes, or a large river basin.
Medium size: The scale of a commune, one or several villages, or a small river basin.
Small scale: The scale of a single village, a cluster of households, or a specific agroforestry model (e.g., the Garden-Pond-Livestock-Forest model).

4.3 Structure of the critical patch

In a landscape, it is necessary to focus on analyzing the fragments that have a decisive impact on the formation and existence of the whole, including:

The patches are directly productive: These are specific agro-forestry farming models that produce goods for human consumption.
The patches are large in size and density: They dominate and shape the overall appearance of the landscape.
Vulnerable patches include: headwater forests, sloping cultivated land, pond banks, stream banks, etc. When these patches are destroyed, the entire landscape can collapse (for example, deforestation of headwater forests causes flash floods and severe landslides).

4.4 Spatial Structure

Horizontal structure:

This refers to the arrangement of land parcels on a plan. For example, arranging terraced fields from the foot to the top of a hill, positioning gardens near water sources, and placing livestock pens away from residential areas. This arrangement can be drawn on a map (plan view) to determine the type, density, and relationships between the land parcels.

Vertical structure:

It is an arrangement based on elevation. On sloping land, the patches are distributed according to elevation zones (rice paddies at the foot of the hill, fruit trees on the lower slopes, industrial crops on the middle slopes, and forests on the hilltops).

Some landscapes also feature vertical stacking, such as the VAC model (the top layer being fruit trees, the bottom layer being fish ponds, and the ground layer being livestock and poultry). These patches within the vertical structure may not be visible on a flat map.

4.5 Time Structure

The temporal structure reflects the regular rotation of the agroforestry landscape according to the seasons. This is particularly evident through the colors:

Spring: Trees sprout new leaves, lush green shoots, and vibrant flowers and fruits.
Summer: The old-growth forest is deep green, and the rice fields are lush and verdant.
Autumn: The rice fields turn golden, the fruit ripens to a reddish hue, and some forest trees begin to change their leaves to yellow.
Winter: Tropical trees shed their leaves, and the landscape becomes somber with patches of brown earth, creating a different mosaic but without losing its core structure.

Photographs capturing the seasonal color changes of Mongolian patches provide a vivid illustration of this temporal structure.

5. The relationship between components in an agroforestry landscape.

The essence of an agroforestry landscape is an agricultural ecosystem, where ecological relationships are incredibly diverse:

The relationship between abiotic factors (climate, soil) and biotic organisms (plants, animals).
The relationship between plants (competition for light, nutrients, or assistance in soil improvement).
The relationship between plants and animals (plants provide food and shelter, animals help with pollination and seed dispersal).
The relationship between microorganisms and plants and animals (decomposition of organic matter, nutrient metabolism).
In particular, the relationship between people (a cultural fragment) and all other components is reflected in decisions regarding management, exploitation, and protection.

These relationships operate through two main ecological processes:

5.1 Energy Exchange Process

Unlike a completely self-contained natural ecosystem that is entirely dependent on sunlight, an agroforestry landscape obtains energy from three sources:

Solar energy: The basic energy source for all photosynthetic activities (patches of natural forests, cultivated plants).
Natural supplementary sources: Energy from wind, water currents, waves, and tides (especially important for agroforestry landscapes in coastal and estuarine areas), which help transport sediment and nutrients.
Human-derived supplementary energy sources: Humans provide "external" forms of energy such as labor, animal power, electricity, gasoline, fertilizers, etc. This is a fundamental difference from natural ecosystems, allowing for increased biomass productivity and superior economic efficiency.

5.2 The process of matter exchange

Agroforestry landscapes frequently experience biogeochemical cycles (carbon, nitrogen, water, minerals, etc.). However, these are not closed cycles. Large amounts of biomass (agricultural products, timber, livestock products) are removed from the system to supply human needs elsewhere.

Conversely, humans also add materials to the landscape such as fertilizers, animal feed, and irrigation water. Analyzing these cycles helps assess the sustainability of the landscape: whether the nutrients removed are replenished in a timely manner, or whether the soil is gradually becoming depleted.

6. Popular agroforestry models today

Based on the biological components involved, agroforestry models are divided into three major systems:

6.1. Agrisilvicultural systems

This model combines woody plants (timber trees, fruit trees) with short-term agricultural crops (food crops, vegetables, flowers).

Alley cropping: Plant rows of nitrogen-fixing trees in parallel strips along contour lines on sloping land. The space in between (the narrow lanes) is used to grow corn, beans, potatoes, and cassava. Periodically, the branches and leaves of the trees are pruned to prevent shading of the crops, and are also used as green manure to cover the soil, retain moisture, and increase fertility.

Multi-tiered home gardens (Homegardens): This model is very common in the humid tropical regions of Southeast Asia. It mimics the canopy structure of a natural forest: the top layer consists of tall timber or fruit trees (coconut, jackfruit, durian); the middle layer consists of medium-sized fruit trees or industrial crops (coffee, tea, banana); and the bottom layer consists of shade-loving vegetables and root crops (ginger, turmeric). This arrangement optimizes sunlight and provides year-round food for the family.

6.2. Silvopastoral systems

This model harmoniously combines forestry structures (woody trees) with grasslands for grazing livestock (buffaloes, cows, goats, sheep, etc.).

Grazing under the forest canopy or in orchards: Livestock are allowed to graze under the canopy of planted forests (pine, rubber, acacia) or large, perennial orchards. The trees provide shade, reducing heat stress for the animals in the summer. Conversely, the livestock help clear weeds, and their manure and urine provide organic nutrients that directly enrich the soil and plant roots.
Living fences: Planting dense rows of fast-growing, highly regenerating trees (hibiscus, acacia, kapok) around the grasslands can replace barbed wire fences. These green fences not only define boundaries and protect against wind and storms, but their branches and leaves can also be pruned to provide protein-rich forage for livestock during grass-scarce seasons.

6.3. Agrosilvopastral systems

This is the pinnacle of ecological art, seamlessly integrating three elements: woody plants, short-term agricultural crops, and livestock.

Vietnam's integrated farming model (VACR): The topographical model is intelligently arranged along the topographic slopes of the midland and mountainous regions:

Forest (High hilltop): Planting protective or economic forests helps retain groundwater, prevent landslides, and provide timber and firewood.
Garden (Gently sloping): Plant fruit trees and industrial crops in combination with intercropping of shrubs and vegetables along contour lines.
The pigsty (at the foot of the slope, near the house): Construct barns and enclosures for raising livestock and poultry.
Pond (Lowest-lying area): Dig ponds to collect rainwater and runoff for raising freshwater fish species (carp, grass carp, silver carp, common carp).

The closed-loop material cycle of VACR: By-products from the garden and forest (leaves, corn stalks, old vegetables) are used as feed for livestock (in the barn) and released into the pond for fish. Livestock waste is fed into a biogas tank to produce cooking gas; the wastewater and sludge are composted into high-quality fertilizer to irrigate the garden and forest. The silt-rich pond water is periodically dredged to fertilize tree roots; conversely, the shade from the garden helps regulate the pond water temperature during the hot season. The entire system...

7. Unbreakable principles when designing agroforestry landscapes

To create a successful agroforestry landscape that delivers practical value, not just theoretical concepts, planners and farmers must strictly adhere to the following three core landscape ecological principles:

7.1 Principles of Spatial Layering and Multi-storey Architecture

An agroforestry system achieves optimal efficiency when it makes maximum use of space both vertically and horizontally, mimicking the structure of a natural forest.

Arrange according to lighting needs: A deep understanding of the physiological characteristics of each plant species is essential. The top layer should be reserved for plants that prefer full sunlight and have deep taproots (such as large timber trees like Dalbergia tonkinensis, Dalbergia cochinchinensis, or broad-leaved fruit trees like durian and jackfruit). The middle layer should be for plants that tolerate partial shade (such as coffee, tea, and taro). The bottom layer should be for short-cycle crops and shade-loving root crops (such as ginger, turmeric, and various herbs).
Superior energy absorption performance: Multi-layered architectural design allows sunlight to be "intercepted" and absorbed through each layer of foliage from top to bottom. Not a single ray of sunlight is wasted on the barren soil, preventing water evaporation. As a result, the total biomass harvested per square meter of an agroforestry landscape is always 2-3 times higher than that of a monoculture, single-layered planting.

7.2 Principles of Ecological Continuity and Spatial Connectivity

In landscape ecology, spatial fragmentation is the number one enemy of biodiversity. When forest areas are fragmented and isolated by vast monoculture fields, the gene flow of species is blocked, leading to population decline.

Establishing ecological corridors:

When landscape design In agroforestry, it is necessary to create continuous green belts (this could be protective tree rows along roads, living hedges around farms, or retained forest strips along streams).

These green corridors act as biological highways, allowing birds, pollinating insects, small animals, and seeds to move and disperse safely through human production spaces, connecting large nature reserves.

Set up a relay buffer zone:

The boundary between a strictly protected natural forest and agricultural land should not be a blunt, straight line. A transitional buffer zone (Ecotone) should be designed using an agroforestry model, with a gradual shift in planting density from dense to sparse, and from wild to domesticated trees.

This buffer zone helps mitigate the negative impacts (noise, dust, polluted runoff) from human activities encroaching on the core of the wild natural area.

7.3 The Principle of Community Consensus and Indigenous Knowledge-Based Approach

Agroforestry landscapes are not static images that scientists paint in a laboratory and then impose on the field. They are living entities where humans are the active operators.

Integrating traditional knowledge:

Each region has indigenous communities that have lived there for hundreds or thousands of years. They possess an invaluable wealth of knowledge about local weather patterns, the characteristics of each plot of land, and the features of native flora and fauna.

Landscape planning must be based on the participation of local people, listening to and integrating their indigenous knowledge into the technical design.

A mechanism for equitable benefit sharing:

No matter how environmentally perfect a landscape design may be, if it does not bring practical economic benefits and does not ensure long-term land use rights for the people, especially women and vulnerable groups, then that model will soon be broken.

When people are involved in the decision-making process and see their family's livelihoods improved and made more sustainable, they will naturally become the most proactive and determined protectors and preservers of the landscape.

8. Conclusion

As can be seen, an agroforestry landscape is not simply a piece of land with crops and livestock. It is a vibrant ecological mosaic, a complex and harmonious system of abiotic, biotic, and cultural elements. It carries within it the mission of providing livelihoods, protecting the environment, and preserving community culture.

Understanding the agroforestry landscape is key to designing, managing, and developing future-oriented production models: an agroforestry that is both economically prosperous, ecologically vibrant, and imbued with humanistic values. In this era... climate change, Therefore, replicating and improving the quality of these landscapes is no longer an option but has become an urgent requirement. sustainable development of humanity.

And if you're nurturing an idea... sustainable organic landscape, Let's start by paying attention to the smallest details: from nutrient-rich growing medium, from harmonious arrangement of the patches, to respecting the laws of nature.