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Assam elephant habitat recovery hope rides on biochar from invasive plants

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Flora & Fauna

Asian Elephant (Elephas maximus)
Status: Endangered
Threat: Habitat loss, fragmentation, and reduction of native forage due to invasive alien plants, leading to increased human-elephant conflict.
Lantana camara (Lantana)
Status: Invasive
Threat: Outcompetes native flora, alters soil nutrients, and restricts herbivore movement.
Chromolaena odorata (Siam Weed)
Status: Invasive
Threat: Forms dense tangled scrub preventing regeneration of native forest species.
Mikania micrantha (Mile-a-minute weed)
Status: Invasive
Threat: Rapidly smothers native herbs, shrubs, and young trees, blocking sunlight.

Ecology Impact

The project in Khalingduar Reserve Forest addresses the degradation of elephant habitats caused by Invasive Alien Plants (IAPs) like Lantana camara, which choke native vegetation and reduce forage for herbivores. By restoring native grasses and plants, it enhances the ecological carrying capacity of the reserve forest and mitigates human-elephant conflict in the Bodoland Territorial Region.

Science & Tech Angle

The project utilizes pyrolysis, a thermochemical decomposition of organic material at elevated temperatures in the absence of oxygen, to produce biochar. This porous, carbon-rich substance improves soil water and nutrient retention, enhances microbial habitats, and serves as a highly stable medium for long-term carbon storage.

Climate Change Link

Converting cleared invasive biomass into biochar prevents the release of carbon dioxide that would occur through natural decay or open burning. This stable form of carbon sequesters carbon in the soil for thousands of years, directly aligning with India's Nationally Determined Contribution (NDC) under the Paris Agreement to create an additional carbon sink of 2.5 to 3 billion tonnes of CO2 equivalent by 2030.

Sustainable Development

The initiative directly supports SDG 15 (Life on Land) by restoring degraded forest ecosystems and halting biodiversity loss, and SDG 13 (Climate Action) through active carbon sequestration. Additionally, it fosters a green economy by transforming ecological waste (invasive weeds) into valuable soil conditioners.

International Frameworks

Kunming-Montreal Global Biodiversity Framework (KMGBF)
Directly aligns with Target 6, which aims to eliminate, minimize, reduce, and mitigate the impacts of invasive alien species on biodiversity and ecosystem services by 2030.
Paris Agreement
Supports climate mitigation efforts through carbon sequestration via biochar production, contributing to global temperature limitation goals.
UN Convention to Combat Desertification (UNCCD)
Promotes land degradation neutrality (LDN) by restoring degraded forest soils and improving soil moisture retention using biochar.

Sources consulted

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