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This study investigates the impact of climate variability on threatened medicinal plants, using Landsat-8 for NDVI analysis in the Niti valley, a cold-arid region of Nanda Devi Biosphere Reserve, Decadal temperature trends, derived from TERRACLIMATE data, reveal consistent warming, particularly in summer, while precipitation patterns from CHIRPS exhibit both increasing and decreasing trends. Correlation analysis emphasizes complex interactions, highlighting a strong positive correlation between temperature and precipitation. NDVI trends showcase vegetation health dynamics, indicating favorable conditions and stress periods. Population assessment of medicinal plant species namely Allium stracheyi, Carum carvi, Dactylorhiza hatagirea, Picrorhiza kurroa and Sinopodophyllum hexandrum unveils varying densities and threats, with cultivated species facing pressure due to local consumption and trade, and those in specific habitats highly threatened by overexploitation. Results demonstrate a strong positive correlation between temperature and precipitation, along with a weak negative correlation between NDVI and temperature/precipitation. The study aligns observed trends with global climate change patterns, underscoring the interconnected nature of climate-vegetation relationships. Urging for sustainable harvesting and conservation, the findings stress the need for adaptive strategies. The study contributes to the discourse on environmental challenges, advocating for collaborative efforts to ensure a sustainable future for the Himalayan region and its diverse plant species.

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Population Status of High-Value Medicinal Plants and Decadal Climate Variability in Niti Valley, Nanda Devi Biosphere Reserve, Western Himalaya

  • 章节

  • 发表日期：

    2025年

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  • Arun Pratap Mishra,
  • Himanshu Sahu,
  • Amit Kumar

摘要

This study investigates the impact of climate variability on threatened medicinal plants, using Landsat-8 for NDVI analysis in the Niti valley, a cold-arid region of Nanda Devi Biosphere Reserve, Decadal temperature trends, derived from TERRACLIMATE data, reveal consistent warming, particularly in summer, while precipitation patterns from CHIRPS exhibit both increasing and decreasing trends. Correlation analysis emphasizes complex interactions, highlighting a strong positive correlation between temperature and precipitation. NDVI trends showcase vegetation health dynamics, indicating favorable conditions and stress periods. Population assessment of medicinal plant species namely Allium stracheyi, Carum carvi, Dactylorhiza hatagirea, Picrorhiza kurroa and Sinopodophyllum hexandrum unveils varying densities and threats, with cultivated species facing pressure due to local consumption and trade, and those in specific habitats highly threatened by overexploitation. Results demonstrate a strong positive correlation between temperature and precipitation, along with a weak negative correlation between NDVI and temperature/precipitation. The study aligns observed trends with global climate change patterns, underscoring the interconnected nature of climate-vegetation relationships. Urging for sustainable harvesting and conservation, the findings stress the need for adaptive strategies. The study contributes to the discourse on environmental challenges, advocating for collaborative efforts to ensure a sustainable future for the Himalayan region and its diverse plant species.