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<p>Forest conservation in the tropics often entails areas with complete legal protection being surrounded by buffer zones to reduce external disturbances and enhance ecological resilience. Areas with varying levels of protection and disturbance regimes often exhibit distinct forest community structures; understanding this pattern assists in evaluating disturbance impacts and conservation efficacy. This study was conducted within the Indo-Burma biodiversity hotspot, in the core and buffer zones of Dampa Tiger Reserve, Mizoram. Sampling plots were established, and trees with &gt; 30&#xa0;cm girth at breast height (GBH) were measured and recorded. From the total sampled area, 123 tree species representing 97 genera and 44 families were recorded. The Shannon index value was evaluated at 3.9, while the Simpson index was 0.03. The core zone exhibited significantly higher species richness, structural complexity, and ecological stability than the buffer zone. There was a notable dissimilarity in the species composition, attributed primarily to species turnover (β<sub>sim</sub> = 0.89). Logistic regression model identified red-list status, diameter at breast height (DBH), and stem density as the key predictors of tree absence in the buffer zone. This study highlights the negative impacts of disturbance on forest structure and emphasizes the significance of statutory protected areas in the conservation of rare and ecologically important species.</p>

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Ecological responses of tree communities to conservation zonation in a tropical forest of Mizoram, India

  • 期刊论文

  • 发表日期：

    2026年6月1日

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  • C. Lalruatkimi,
  • Khumanthem Babina Devi,
  • Madhurima,
  • Lal Thawmmawii,
  • Nistha Khanna,
  • Ahmed Abdallah Adam Mohamed,
  • Om Prakash Tripathi

摘要

Forest conservation in the tropics often entails areas with complete legal protection being surrounded by buffer zones to reduce external disturbances and enhance ecological resilience. Areas with varying levels of protection and disturbance regimes often exhibit distinct forest community structures; understanding this pattern assists in evaluating disturbance impacts and conservation efficacy. This study was conducted within the Indo-Burma biodiversity hotspot, in the core and buffer zones of Dampa Tiger Reserve, Mizoram. Sampling plots were established, and trees with > 30 cm girth at breast height (GBH) were measured and recorded. From the total sampled area, 123 tree species representing 97 genera and 44 families were recorded. The Shannon index value was evaluated at 3.9, while the Simpson index was 0.03. The core zone exhibited significantly higher species richness, structural complexity, and ecological stability than the buffer zone. There was a notable dissimilarity in the species composition, attributed primarily to species turnover (βsim = 0.89). Logistic regression model identified red-list status, diameter at breast height (DBH), and stem density as the key predictors of tree absence in the buffer zone. This study highlights the negative impacts of disturbance on forest structure and emphasizes the significance of statutory protected areas in the conservation of rare and ecologically important species.