Casuarina Equisetifolia (Australian Pine or Beach She-Oak) | Forestry Optional for UPSC IFS
Casuarina equisetifolia, commonly known as the Australian pine or ironwood, is a fast-growing evergreen tree native to Australia, Southeast Asia, and the Pacific Islands. It is widely cultivated for its timber, as well as for its ability to tolerate harsh coastal conditions and stabilize sandy soils.
Introduction of Casuarina Equisetifolia:
Casuarina equisetifolia, commonly known as the Australian pine or ironwood, is a fast-growing evergreen tree native to Australia, Southeast Asia, and the Pacific Islands. It is widely cultivated for its timber, as well as for its ability to tolerate harsh coastal conditions and stabilize sandy soils.
Taxonomy for Casuarina Equisetifolia:
- Kingdom: Plantae
- Phylum: Tracheophyta
- Class: Pinopsida
- Order: Fagales
- Family: Casuarinaceae
- Genus: Casuarina
- Species: Casuarina equisetifolia
Phenology of Casuarina Equisetifolia:
- Casuarina equisetifolia is an evergreen tree, so its phenology includes ongoing processes throughout the year.
- Phenological events include continuous leaf growth, flowering, and seed production.
- Flowering typically occurs year-round, with variations depending on the climate and location.
Ecology of Casuarina Equisetifolia:
- Casuarina equisetifolia is well-suited to coastal environments, often found near shorelines.
- It has a unique relationship with nitrogen-fixing actinomycete bacteria in its root nodules, enabling it to thrive in nutrient-poor soils.
- The tree's needle-like leaves reduce water loss through transpiration, making it adapted to arid conditions.
Origin of Casuarina Equisetifolia:
- Casuarina equisetifolia is native to Southeast Asia, Northern Australia, and various Pacific Islands.
- It has been introduced to many other tropical and subtropical regions worldwide due to its adaptability and usefulness.
Natural Distribution of Casuarina Equisetifolia:
- In its native range, Casuarina equisetifolia is commonly found along coastal areas and sandy soils.
- It is abundant in countries like Australia, India, Indonesia, and the Philippines.
- Beyond its native range, it has been introduced in regions of Africa, the Americas, and other parts of Asia as an ornamental tree and for erosion control.
Characteristics of Casuarina Equisetifolia:
- Evergreen tree: Casuarina Equisetifolia is an evergreen tree that retains its foliage throughout the year.
- Height: It can grow up to 30 meters in height.
- Appearance: The tree has a slender, conical shape with drooping branches and needle-like leaves.
- Bark: The bark is rough and grayish-brown in color.
- Root system: Casuarina Equisetifolia has a deep and extensive root system, which helps in stabilizing soil and preventing erosion.
Propagation of Casuarina Equisetifolia:
1. Seed Propagation:
- Collect mature seeds from the female cones of Casuarina Equisetifolia trees.
- Soak the seeds in water for 24 hours to enhance germination.
- Sow the seeds in a well-draining potting mix or directly in the ground.
- Maintain a warm temperature (around 25-30°C) and provide adequate moisture.
- Germination usually occurs within 2-4 weeks, and seedlings can be transplanted once they have developed a few true leaves.
2. Vegetative Propagation:
- Stem Cuttings: Take 15-20 cm long stem cuttings from healthy Casuarina Equisetifolia trees during the dormant season.
- Remove the lower leaves and dip the cut end in a rooting hormone.
- Plant the cuttings in a well-draining potting mix or directly in the ground.
- Maintain high humidity and provide indirect light.
- Rooting usually occurs within 4-6 weeks, and the rooted cuttings can be transplanted.
3. Air Layering:
- Select a healthy branch of Casuarina Equisetifolia and make a small incision on the lower side of the branch.
- Apply a rooting hormone to the incision and wrap it with a moist sphagnum moss or peat moss.
- Cover the moss with a plastic wrap and secure it with a string or rubber band.
- Keep the moss moist and provide indirect light.
- Roots will develop within a few months, and the rooted section can be cut and planted separately.
4. Tissue Culture:
- Collect a small piece of tissue from a healthy Casuarina Equisetifolia tree.
- Sterilize the tissue to remove any contaminants.
- Place the tissue in a culture medium containing nutrients and growth hormones.
- Provide the necessary conditions for tissue growth, such as controlled temperature, light, and humidity.
- After several weeks, the tissue will develop into plantlets, which can be transferred to pots or the field for further growth.
Seed Treatment for Casuarina Equisetifolia:
1. Scarification:
- The hard seed coat of Casuarina Equisetifolia seeds can be scarified to enhance germination.
- Scarification involves mechanically breaking or scratching the seed coat to allow water and oxygen to penetrate the seed.
- This can be done by rubbing the seeds with sandpaper or using a file to create small scratches on the seed coat.
2. Stratification:
- Stratification is a process of subjecting seeds to specific temperature and moisture conditions to simulate natural winter conditions.
- Casuarina Equisetifolia seeds can benefit from stratification to break seed dormancy and promote germination.
- Seeds can be placed in a moist medium, such as sand or peat moss, and stored in a cool environment (around 4-10°C) for a specific period, usually several weeks to a few months.
3. Soaking:
- Soaking Casuarina Equisetifolia seeds in water before sowing can help soften the seed coat and improve germination.
- Seeds can be soaked in room temperature water for 24-48 hours.
- After soaking, the seeds should be drained and sown immediately to prevent fungal growth.
4. Pre-sowing treatments:
- Pre-sowing treatments like hot water treatment or chemical treatments can be used to enhance germination in Casuarina Equisetifolia seeds.
- Hot water treatment involves immersing the seeds in hot water (around 80-90°C) for a short period, usually a few minutes, followed by rapid cooling.
- Chemical treatments may involve using growth regulators or fungicides to improve seed germination and protect against fungal diseases.
5. Direct sowing:
- Casuarina Equisetifolia seeds can also be directly sown without any specific seed treatment.
- However, direct sowing may result in lower germination rates compared to treated seeds.
- Direct sowing is suitable for areas with favorable environmental conditions and where seed availability is abundant.
Casuarina Equisetifolia: Rotation Age, Spacing, Tending Operations and Yield
Rotation Age:
- The rotation age refers to the time period required for Casuarina Equisetifolia trees to reach maturity and be ready for harvesting.
- The rotation age for Casuarina Equisetifolia is typically around 5 to 7 years.
- This species has a relatively short rotation age compared to other tree species, making it suitable for quick and efficient timber production.
Spacing:
- Spacing refers to the distance between individual Casuarina Equisetifolia trees when planted in a plantation.
- The recommended spacing for Casuarina Equisetifolia is around 2 to 3 meters between trees.
- Proper spacing ensures adequate sunlight, nutrients, and airflow for each tree, promoting healthy growth and maximizing yield.
Tending Operations:
- Tending operations involve various activities carried out during the growth period of Casuarina Equisetifolia to ensure optimal growth and development.
- Tending operations for Casuarina Equisetifolia may include weeding, pruning, thinning, and pest control measures.
- Regular tending operations help maintain the health and vigor of the trees, reducing competition for resources and enhancing overall productivity.
Yield:
- The yield of Casuarina Equisetifolia refers to the amount of usable timber or other products obtained from a plantation.
- Casuarina Equisetifolia is known for its high yield potential, with an average yield of around 10 to 15 cubic meters per hectare per year.
- The yield can vary depending on factors such as site conditions, management practices, and rotation age.
- Proper tending operations and appropriate spacing can contribute to maximizing the yield of Casuarina Equisetifolia plantations.
Soil requirements for Casuarina Equisetifolia:
- Soil Adaptability: Casuarina Equisetifolia is highly adaptable to a wide range of soil types, including sandy, loamy, and even poor soils.
- Tolerance to Salinity: It has a remarkable ability to tolerate high levels of salinity in the soil, making it suitable for coastal areas and regions with saline soils.
- Nitrogen Fixation: Casuarina Equisetifolia forms a symbiotic relationship with nitrogen-fixing bacteria, allowing it to thrive in nutrient-poor soils by converting atmospheric nitrogen into a usable form.
- Soil Erosion Control: The deep and extensive root system of Casuarina Equisetifolia helps stabilize the soil, preventing erosion in areas prone to landslides or soil degradation.
Climate requirements for Casuarina Equisetifolia:
- Tropical and Subtropical Regions: This tree species is well-suited for tropical and subtropical climates, where it can withstand high temperatures and humidity.
- Drought Tolerance: Casuarina Equisetifolia exhibits excellent drought tolerance, making it suitable for regions with limited water availability or prolonged dry seasons.
- Wind Resistance: It can withstand strong winds and cyclones due to its flexible branches and needle-like leaves, making it a suitable choice for coastal areas prone to storms.
- Frost Sensitivity: While Casuarina Equisetifolia can tolerate a wide range of temperatures, it is sensitive to frost and may suffer damage or die in areas with severe frost events.
Silvicultural Characters of Casuarina Equisetifolia:
1. Growth habit:
- Casuarina equisetifolia is a fast-growing evergreen tree.
- It has a conical or columnar shape with a dense crown.
- The tree can reach a height of 20-35 meters.
2. Leaf characteristics:
- The leaves are reduced to small scales, known as cladodes, which resemble green stems.
- These cladodes are jointed and whorled around the branches, giving the tree a unique appearance.
- The leaves are photosynthetic and help in the tree's growth and development.
3. Root system:
- Casuarina equisetifolia has a deep and extensive root system.
- The roots can penetrate deep into the soil, making the tree well-adapted to sandy and coastal areas.
- The root system also helps in stabilizing the soil and preventing erosion.
4. Reproductive characteristics:
- The tree produces small, inconspicuous flowers that are wind-pollinated.
- The flowers are followed by small, woody cones that contain numerous tiny seeds.
- The seeds are dispersed by wind and can germinate in a wide range of soil conditions.
Nursery Techniques for Casuarina Equisetifolia:
1. Seed collection and storage:
- Collect mature cones from healthy trees.
- Extract the seeds from the cones and clean them.
- Store the seeds in a cool and dry place to maintain their viability.
2. Seed treatment:
- Soak the seeds in water for 24-48 hours to enhance germination.
- Scarify the seeds by nicking or sanding the hard seed coat to improve water absorption.
- Treat the seeds with a fungicide to prevent fungal infections.
3. Seed sowing:
- Sow the treated seeds in well-drained nursery beds or containers.
- Cover the seeds with a thin layer of soil or sand.
- Maintain adequate moisture and provide partial shade to promote germination.
4. Seedling care:
- Water the seedlings regularly to keep the soil moist but not waterlogged.
- Provide protection from strong winds and extreme temperatures.
- Apply a balanced fertilizer to promote healthy growth.
5. Transplanting:
- Transplant the seedlings to their permanent location when they reach a height of 15-20 cm.
- Choose a site with well-drained soil and sufficient sunlight.
- Space the seedlings appropriately to allow for their growth and development.
6. Weed control:
- Regularly remove weeds from the nursery beds to prevent competition for nutrients and water.
- Mulching can also help in suppressing weed growth.
7. Pest and disease management:
- Monitor the seedlings for any signs of pests or diseases.
- Use appropriate insecticides or fungicides to control infestations.
- Practice good sanitation and hygiene to prevent the spread of diseases.
8. Pruning and training:
- Prune the seedlings to promote a well-balanced and sturdy structure.
- Remove any dead or diseased branches.
- Train the seedlings to a single leader for better form and growth.
9. Hardening off:
- Gradually expose the seedlings to outdoor conditions to acclimatize them before transplanting.
- Reduce watering and provide more sunlight to prepare the seedlings for the field.
10. Monitoring and maintenance:
- Regularly monitor the growth and health of the seedlings.
- Provide necessary care such as watering, fertilizing, and protection from pests and diseases.
- Maintain proper spacing and weed control in the nursery.
Silvicultural Techniques for Casuarina Equisetifolia:
1. Site Preparation:
- Clearing the site of competing vegetation and debris.
- Ensuring proper drainage and soil preparation.
2. Planting:
- Selecting healthy seedlings or cuttings.
- Digging holes of appropriate size and depth.
- Planting the seedlings at the recommended spacing.
3. Pruning:
- Removing lower branches to promote vertical growth.
- Pruning dead or diseased branches for better tree health.
- Shaping the tree to desired form or structure.
4. Thinning:
- Removing excess trees to reduce competition and improve growth.
- Selectively removing weaker or less desirable trees.
- Maintaining an optimal density for healthy growth.
5. Fertilization:
- Applying appropriate fertilizers to enhance nutrient availability.
- Ensuring proper timing and dosage to avoid over-fertilization.
- Monitoring soil nutrient levels and adjusting fertilization accordingly.
Silvicultural Systems for Casuarina Equisetifolia:
1. Even-aged Management:
- Planting and managing trees of similar age and size.
- Conducting periodic thinnings to maintain desired density.
- Promoting uniform growth and harvesting at the same time.
2. Uneven-aged Management:
- Maintaining a mixture of trees of different ages and sizes.
- Selectively harvesting individual trees or small groups.
- Promoting natural regeneration and continuous forest cover.
3. Agroforestry Systems:
- Integrating Casuarina Equisetifolia with agricultural crops or livestock.
- Providing shade, windbreak, and erosion control benefits.
- Enhancing overall productivity and sustainability.
4. Shelterbelt Plantations:
- Establishing linear plantations along field boundaries or coastlines.
- Protecting crops, livestock, or infrastructure from wind and salt spray.
- Providing additional income through timber or fuelwood production.
5. Rehabilitation and Restoration:
- Planting Casuarina Equisetifolia in degraded or deforested areas.
- Restoring soil fertility, preventing erosion, and improving biodiversity.
- Supporting ecosystem recovery and providing economic benefits.
Economic Importance of Casuarina Equisetifolia:
- Timber: Casuarina Equisetifolia is a valuable source of timber due to its fast growth and high wood density. The timber is used for various purposes such as construction, furniture, and fuelwood.
- Windbreaks and erosion control: The dense foliage and strong root system of Casuarina Equisetifolia make it an excellent choice for windbreaks and erosion control. It helps in reducing wind velocity, preventing soil erosion, and stabilizing coastal areas.
- Sand fixation: Casuarina Equisetifolia has the ability to fix sand and stabilize dunes. This is particularly important in coastal areas where it helps in preventing sand movement and desertification.
- Paper production: The wood of Casuarina Equisetifolia can be used for paper production due to its high cellulose content. This provides an additional economic benefit.
Natural Regeneration Methods of Casuarina Equisetifolia:
1. Seed Dispersal:
- Casuarina Equisetifolia produces small, winged seeds that are dispersed by wind.
- The seeds are lightweight and can be carried over long distances, aiding in natural regeneration.
2. Germination:
- Once the seeds reach suitable soil conditions, they germinate and establish new plants.
- Germination is facilitated by the presence of moisture and favorable temperatures.
3. Root Suckering:
- Casuarina Equisetifolia has the ability to produce new shoots from its extensive root system.
- This process, known as root suckering, allows the tree to regenerate naturally by producing multiple stems from the same root system.
4. Vegetative Propagation:
- Casuarina Equisetifolia can be propagated vegetatively by taking cuttings from mature trees.
- These cuttings can be planted directly into the soil, where they develop roots and grow into new plants.
5. Rhizome Growth:
- Casuarina Equisetifolia also spreads through rhizomes, which are underground stems that produce new shoots.
- Rhizomes allow the tree to expand its root system and establish new individuals in suitable habitats.
6. Colonization of Disturbed Areas:
- Casuarina Equisetifolia has the ability to colonize disturbed areas, such as coastal dunes or degraded lands.
- Its rapid growth and ability to tolerate harsh conditions make it a successful colonizer, aiding in natural regeneration.
7. Allelopathy:
- Casuarina Equisetifolia releases chemicals into the soil that inhibit the growth of competing plants.
- This allelopathic effect gives the tree a competitive advantage, allowing it to dominate the surrounding vegetation and regenerate naturally.
8. Fire Resilience:
- Casuarina Equisetifolia has adaptations that make it resilient to fire.
- After a fire event, the tree can resprout from its root system, promoting natural regeneration in fire-prone ecosystems.
Artificial Regeneration Methods of Casuarina Equisetifolia:
1. Seed Collection and Storage:
- Collect mature seeds from healthy Casuarina Equisetifolia trees.
- Ensure proper cleaning and drying of seeds before storage.
- Store seeds in a cool and dry place to maintain viability.
2. Seed Treatment:
- Scarify the seeds to break their hard seed coat, enhancing germination.
- Soak the seeds in water for a specific period to improve germination rates.
- Treat seeds with fungicides to prevent fungal infections.
3. Nursery Techniques:
- Prepare a well-drained nursery bed with a suitable growing medium.
- Sow the treated seeds at the recommended depth and spacing.
- Provide adequate watering and protection from extreme weather conditions.
- Apply fertilizers and organic manure to promote healthy seedling growth.
4. Vegetative Propagation:
- Utilize vegetative propagation methods like stem cuttings or air layering.
- Select healthy and disease-free branches for propagation.
- Treat the cuttings with rooting hormones to enhance root development.
- Plant the cuttings in a suitable rooting medium and provide necessary care.
5. Tissue Culture:
- Use tissue culture techniques to produce a large number of uniform plantlets.
- Collect explants from healthy Casuarina Equisetifolia trees.
- Sterilize the explants to eliminate any contaminants.
- Cultivate the explants in a nutrient-rich medium under controlled conditions.
- Transfer the developed plantlets to the nursery for further growth.
6. Transplantation:
- Transplant the seedlings or propagated plants to the desired planting site.
- Choose a suitable site with proper soil conditions and adequate sunlight.
- Dig holes of appropriate size and spacing for planting.
- Ensure proper watering and maintenance during the initial establishment phase.
7. Weed Control and Maintenance:
- Implement weed control measures to minimize competition for resources.
- Regularly monitor the plantation for pests and diseases.
- Prune the plants to maintain desired shape and remove any damaged parts.
- Apply fertilizers and irrigation as per the plant's requirements.
8. Monitoring and Evaluation:
- Continuously monitor the growth and health of the regenerated plants.
- Assess the survival rate and growth performance of the plantation.
- Make necessary adjustments in management practices based on the evaluation results.
Principles Governing the Felling of Trees in Forests:
1. Sustainable Forest Management:
- This principle ensures that the felling of trees is done in a manner that maintains the long-term health and productivity of the forest ecosystem.
- It involves assessing the forest's capacity to regenerate and setting limits on the number and type of trees that can be harvested.
2. Selective Logging:
- Selective logging involves carefully choosing which trees to cut, focusing on mature or damaged trees, while leaving younger and healthier trees to continue growing.
- This practice helps maintain the overall structure and biodiversity of the forest.
3. Minimum Diameter Limit:
- This principle sets a minimum diameter limit for trees that can be felled, ensuring that only mature trees are harvested.
- The minimum diameter limit varies depending on the species and local regulations.
4. Regeneration and Reforestation:
- After felling trees, it is essential to promote natural regeneration or actively reforest the area to ensure the continuous growth of the forest.
- This principle emphasizes the importance of replanting or allowing natural regeneration to maintain the forest's ecological balance.
Casuarina Equisetifolia: Indian Forest Laws Governing Cultivation and Trade
1. The Indian Forest Act, 1927:
- This act provides the legal framework for the conservation, protection, and management of forests in India.
- It regulates the felling, transportation, and trade of forest produce, including timber.
2. Forest Conservation Act, 1980:
- This act aims to conserve forests and wildlife by restricting the diversion of forest land for non-forest purposes.
- It requires prior approval from the central government for any diversion of forest land.
3. Wildlife Protection Act, 1972:
- This act focuses on the protection and conservation of wildlife species and their habitats.
- It prohibits the hunting, poaching, and trade of endangered species, including their parts and derivatives.
4. Forest Rights Act, 2006:
- This act recognizes and vests the rights of forest-dwelling communities over forest land and resources.
- It aims to empower and protect the rights of tribal and other traditional forest-dwelling communities.
5. Biodiversity Act, 2002:
- This act provides a legal framework for the conservation, sustainable use, and equitable sharing of benefits derived from India's biodiversity.
- It regulates access to biological resources and associated traditional knowledge.
6. Timber Trade Regulations:
- Various regulations govern the trade of timber, including the Timber Transit Rules, 1970, and the Timber Distribution (Nationalization) Act, 1972.
- These regulations aim to prevent illegal logging, ensure sustainable timber trade, and promote transparency in the timber supply chain.
Casuarina Equisetifolia: Mortality, Pests, Diseases and Their Control
- Mortality: Casuarina equisetifolia, also known as the Australian pine or ironwood, can experience mortality due to various factors such as extreme weather conditions, poor soil conditions, and competition with other plants.
- Pests: Common pests that can affect Casuarina equisetifolia include borers, leaf miners, and scale insects. These pests can cause damage to the tree by feeding on its foliage and weakening its overall health.
- Diseases: Casuarina equisetifolia is susceptible to fungal diseases such as root rot and leaf spot. These diseases can lead to the decline and death of the tree if not properly managed.
- Control: To control mortality, it is important to provide proper care and maintenance to the trees, including regular watering, fertilization, and pruning. Implementing measures to protect the trees from extreme weather conditions can also help reduce mortality rates. Pests can be controlled through the use of insecticides or biological control methods. Fungal diseases can be managed by improving drainage, avoiding overwatering, and applying fungicides when necessary.
Tree Improvement for Casuarina Equisetifolia:
1. Seed Selection and Collection:
- Collect seeds from superior parent trees that exhibit desirable traits such as fast growth, disease resistance, and straight stem formation.
- Ensure the seeds are mature and healthy to improve the chances of producing high-quality seedlings.
2. Genetic Tree Improvement:
- Utilize breeding programs to select and cross parent trees with favorable characteristics.
- This involves controlled pollination to create new genetic combinations that enhance desirable traits.
3. Clonal Propagation:
- Clone superior individuals by taking cuttings or tissue culture to maintain the genetic integrity of exceptional trees.
- This method ensures the preservation of desired traits from parent trees.
4. Selection and Testing Trials:
- Conduct field trials and selection programs to evaluate the performance of different tree populations.
- Identify and select the best-performing trees based on growth rate, wood quality, and resistance to pests and diseases.
5. Marker-Assisted Selection (MAS):
- Use genetic markers to identify specific genes or DNA sequences associated with desirable traits.
- This allows for more precise selection of trees with desired characteristics.
6. Mass Selection:
- Choose and propagate trees from a population that exhibit outstanding characteristics without specific genetic analysis.
- Continuously select and breed trees with superior attributes over successive generations.
7. Provenance Trials:
- Establish trials with trees sourced from different geographic locations (provenances) to identify populations adapted to local environmental conditions.
- Select and use provenances that perform well in the target planting site.
Management of Casuarina Equisetifolia:
1. Site Selection:
- Casuarina equisetifolia prefers well-drained soils and is often planted in coastal areas because it can tolerate salt spray and sandy soils.
- Proper site selection is crucial to ensure optimal growth and yield.
2. Planting:
- Planting can be done from seeds or seedlings.
- Seedlings are usually preferred for uniform growth and quicker establishment.
- Spacing should be appropriate to allow for optimum tree growth while minimizing competition.
3. Pruning and Thinning:
- Pruning and thinning can help shape the tree, improve timber quality, and reduce the risk of diseases.
- Remove lower branches to promote a straight and clear bole for timber production.
4. Silvicultural Systems: Consider different silvicultural systems, such as clearcutting, shelterwood, or selective cutting, depending on management objectives and local conditions.
5. Irrigation:
- Depending on the climate and soil conditions, supplemental irrigation may be necessary, especially during the establishment phase.
- Adequate moisture is essential for initial growth and survival.
6. Fertilization:
- Soil testing should be conducted to determine nutrient deficiencies.
- Fertilize as needed to promote healthy growth and improve timber quality.
7. Weed Control:
- Implement weed control measures to reduce competition for water, nutrients, and light.
- Mulching or herbicides can be used to manage weeds.
8. Pest and Disease Management:
- Monitor for common pests and diseases that affect Casuarina equisetifolia, such as scale insects and heart rot.
- Implement appropriate pest and disease control strategies as needed.
9. Harvesting:
- Casuarina equisetifolia is typically harvested for timber when it reaches maturity, which is around 15-20 years.
- Harvesting should be carried out following sustainable forestry practices to ensure the long-term health of the stand.
10. Regeneration:
- Plan for regeneration after harvesting, either through natural regeneration or planting new seedlings.
- Maintaining a healthy seed source is essential for successful regeneration.
11. Erosion Control and Windbreaks:
- Casuarina equisetifolia is often used for erosion control and as windbreaks in coastal areas due to its dense canopy and wind-resistance.
- Proper management ensures the effectiveness of these functions.
Conclusion:
Silviculture practices for Casuarina equisetifolia focus on creating suitable growing conditions, ensuring proper spacing, controlling weeds, and providing adequate nutrition. By following these practices, foresters and land managers can successfully cultivate and manage Casuarina equisetifolia plantations, benefiting from its timber production and soil stabilization properties.