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首页> 外文会议>International symposium on remote sensing of environment >Assessment of the impact of hurricanes on light regime and biomass in tropical forest ecosystems: a Puerto Rico case-study
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Assessment of the impact of hurricanes on light regime and biomass in tropical forest ecosystems: a Puerto Rico case-study

机译：评估飓风对热带森林生态系统的轻质制度与生物量的影响：港波多黎各案例研究

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Many forests experience periodic, large-scale disturbances, such as hurricanes and cyclones, that open the forest canopy, causing dramatic increases in understory light availability and seedling densities. In hurricane-impacted forests, large variations in (a)biotic conditions likely shape seedling dynamics, which in turn will determine patterns of forest recovery. We monitored 13,836 seedlings of 82 tree and shrub species over ten years following Hurricane Georges in a sub-tropical forest in north-eastern Puerto Rico. We quantified changes in the biotic and abiotic environment of the understory and linked seedling dynamics to changes in light availability and seedling density, and to spatial variation in soil type, topography, and tree density. The results of our study suggest that hurricanes shape species composition through indirect effects on understory conditions that differentially influence the success of seedlings. Thus, predicted increases in the intensity and frequency of hurricanes in the Caribbean will likely alter seedling dynamics and species composition in hurricane-impacted forests.
机译：许多森林遇到周期性的，大规模的干扰，比如飓风和龙卷风，打开树冠，导致林下光可用性急剧增加和苗木密度。在飓风影响森林，在（a）中的生物条件的大的变化可能形状幼苗动力学，这反过来将确定森林恢复的图案。我们监测的亚热带森林在东北波多黎各飓风乔治82个乔灌木树种十多年来13836个苗。我们量化林下的生物和非生物环境的变化和联苗动力学改变光的可用性和苗密度，并在土壤类型，地形和树木的密度空间变化。我们的研究结果表明，飓风塑造物种组成，通过对不同地影响幼苗的成功林下条件的间接影响。因此，预测在加勒比海在强度增加和飓风的频率将在飓风影响森林可能ALTER幼苗动力学和物种组成。

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