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Dendroclimatology of teak indicates prevailing climatic conditions of tropical moist forests in India
Ecological Indicators ( IF 6.9 ) Pub Date : 2021-06-15 , DOI: 10.1016/j.ecolind.2021.107888
Keshav Kumar Upadhyay , Santosh K. Shah , Arijit Roy , Shri Kant Tripathi

Among all proxy archives, tree rings are highly promising indicator of ecological and environmental processes due to their high climatic sensitivity, better annual resolution, and large spatial coverage. Seasonal importance of soil moisture dynamics and impact of drought events on tree growth development and carbon sequestration potential in tropical moist forests was assessed using the teak tree ring width index and instrumental climate data from Aizawl, Mizoram. Present analysis suggests that soil moisture during months of the early growing season with low precipitation is crucial for determining the growth of teak trees in the Northeast region of India. Results of the present study reflected the impact of remote atmospheric climate regulation modes such as El Niño-Southern Oscillation (ENSO), Pacific Decadal Oscillation (PDO), Sea surface temperature (SST) and Southern Oscillation Index (SOI) on site climate. Results indicate that the increasing moisture stresses in the region may cause the survival risk for the other forest vegetation having low adaptability to climate change stresses with the inability to make niche shifts. Increasing the number of tree ring studies linked with eco-physiological parameters of tree growth is recommended to better visualize the level of stresses on the trees in the moist tropical forests. This information will be useful in developing better management plans for biodiversity conservation in the tropical region.



中文翻译:

柚木树木气候学表明印度热带潮湿森林的主要气候条件

在所有代理档案中,树木年轮具有较高的气候敏感性、较好的年分辨率和较大的空间覆盖范围,是非常有前景的生态和环境过程指标。使用柚木年轮宽度指数和来自米佐拉姆邦艾藻尔的仪器气候数据评估土壤水分动态的季节性重要性和干旱事件对热带潮湿森林树木生长发育和碳固存潜力的影响。目前的分析表明,在降雨量较低的早期生长季节的几个月内,土壤水分对于确定印度东北地区柚木树的生长至关重要。本研究结果反映了厄尔尼诺-南方涛动(ENSO)、太平洋年代际涛动(PDO)、现场气候的海面温度 (SST) 和南方涛动指数 (SOI)。结果表明,该地区不断增加的水分胁迫可能导致其他森林植被对气候变化胁迫的适应性低,无法进行生态位转变,从而面临生存风险。建议增加与树木生长的生态生理参数相关的树木年轮研究的数量,以更好地形象化潮湿热带森林中树木的压力水平。这些信息将有助于制定更好的热带地区生物多样性保护管理计划。结果表明,该地区不断增加的水分胁迫可能导致其他森林植被对气候变化胁迫的适应性低,无法进行生态位转变,从而面临生存风险。建议增加与树木生长的生态生理参数相关的树木年轮研究的数量,以更好地形象化潮湿热带森林中树木的压力水平。这些信息将有助于制定更好的热带地区生物多样性保护管理计划。结果表明,该地区不断增加的水分胁迫可能导致其他森林植被对气候变化胁迫的适应性低,无法进行生态位转变,从而面临生存风险。建议增加与树木生长的生态生理参数相关的树木年轮研究的数量,以更好地形象化潮湿热带森林中树木的压力水平。这些信息将有助于制定更好的热带地区生物多样性保护管理计划。

更新日期:2021-06-15
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