Assessment of invasive plant species in the North-Eastern Region of India

The North-Eastern Region (NER) of India, known for its rich biodiversity, is increasingly threatened by invasive plant species. This paper presents a comparative analysis of invasive plant species in the North-Eastern Region of India based on secondary data from the India State of Forest Reports (ISFR) 2019 and 2021. The analysis highlights key invasive species, including Chromolaena odorata, Mikania micrantha, Lantana camara, Vachellia farnesiana, and Ageratum conyzoides, which dominate large areas of forest land. While some species, such as Vachellia farnesiana, have expanded their presence, others like Ageratum conyzoides have shown a decline in specific regions, indicating varying invasion patterns. The key observations from the analysis also reveal a reduction in the overall extent of plant invasions in states like Arunachal Pradesh and Assam, suggesting the success of management and conservation efforts. However, the persistence and spread of several other invasive species remain a concern, with significant ecological and economic implications for the region's forest ecosystems. This comparison underscores the importance of sustained monitoring, strategic interventions, and policy support to effectively manage invasive species and preserve the unique biodiversity of the region.