Department of Forest Biology and Tree Improvement, College of Forestry, SIRSI Campus, University of Agricultural Sciences, Karnataka, 581 401, Dharwad, India.
Environ Monit Assess. 2022 Feb 23;194(3):214. doi: 10.1007/s10661-022-09882-0.
Though Cinnamomum zeylanicum is a very important commercial aromatic bark yielding and oldest known tree spice of India, there are hardly any studies to understand the nature of wound healing and bark recovery. Further, optimal number of sprouts to be retained under coppice system to maximize the bark yield per tree in C. zeylanicum is not yet standardized. The present investigation was carried out to understand the influence of patch geometry and application of post-bark-extraction-protection treatments on bark regeneration in mature trees as well as to standardize an optimal number of sprouts to be retained under coppice system to maximize the bark yield per tree. In general, wound healing in C. zeylanicum occurred from the edge of the blaze and was quicker in the narrower patch than the broader patch; application of Bordeaux paste or neem seed kernel extract on the blazed area immediately after the bark extraction, resulted in significantly higher mean percent bark recovery and higher bark oil content than control. Allowing seven coppice sprouts per stem resulted in higher dry mass of bark per plant and higher bark oil than other treatments under coppice system. The results of the study would enable formulation of management strategies specifically for sustainable bark harvesting in Cinnamomum species.
虽然肉桂（Cinnamomum zeylanicum）是一种非常重要的商业芳香树皮，也是印度最古老的已知树香料，但几乎没有研究来了解其伤口愈合和树皮恢复的性质。此外，在萌蘖系统下保留最佳数量的萌芽以最大限度地提高肉桂每棵树的树皮产量尚未标准化。本研究旨在了解斑块几何形状的影响以及在剥皮后保护处理对成熟树木树皮再生的影响，并确定在萌蘖系统下保留最佳数量的萌芽以最大限度地提高每棵树的树皮产量的标准化方法。一般来说，肉桂的伤口愈合是从烧伤边缘开始的，在较窄的斑块中比在较宽的斑块中更快；在剥皮后立即在烧伤区域涂抹波尔多浆或印楝种子仁提取物，比对照处理显著提高了平均树皮恢复率和更高的树皮油含量。在萌蘖系统下，每株保留七个萌蘖芽可获得更高的干皮质量和更高的树皮油产量。该研究的结果将有助于制定具体的管理策略，以实现肉桂属植物的可持续树皮收获。
