飓风和台风对沿海地区森林生态系统的影响
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A review of the impacts of hurricanes and typhoons on forest ecosystems in coastal areas
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    摘要:

    飓风和台风是影响热带和温带沿海区域的主要灾害性气候之一,飓风和台风对于森林生态系统的影响是生态学关注的课题。综述了飓风和台风登陆对于森林生态系统树木和林分的危害影响形式及主要影响因素,着重举例阐述了树种和森林类型是影响台风危害程度的一个重要因素。分析了目前国际上开展的关于飓风和台风登陆对于森林生态系统碳、氮循环的影响,结果表明飓风、台风干扰导致的森林凋落物输入量、凋落物分解速率以及森林碳储存量动态变化较为复杂,与森林类型、林分空间位置以及台风过后的时间段密切相关。飓风引起的森林受损的恢复途径和机理与树冠受损严重程度直接相关,并受到光和水分条件的影响,及时的开花、结果以及充足的土壤种子库对森林植被恢复具有促进作用。在景观和区域尺度量化飓风和台风对沿海地区森林生态系统的影响也日益引起关注,在这方面,整合气象数据、遥感数据和地面调查的模型模拟方法起到重要的作用。今后应加强对于我国东南沿海地区森林生态系统遭受台风影响损失的生态监测和长期定位研究,加强关于台风对于不同森林生态系统类型和不同树种的危害形式和危害程度的研究,以及台风对于森林生态系统碳、氮循环影响的研究,弥补我国在以上领域的空白。

    Abstract:

    Hurricanes and typhoons is one of the main climatic disasters in the coastal areas in tropical and temperate zones, and studying their impacts on forest ecosystems is a significant challenge in ecology. This paper reviews the types of damage they cause to trees and forest stands and the factors that influence this damage. The main types of damage include uprooting, loss of the crown, stem breakage, and defoliation. The damage varies as a function of tree species, tree age, forest type, tree height, topographic location, and other characteristics. The vulnerability of a species to damage can be mostly explained by their canopy position. Recovery of forest ecosystems after typhoon and hurricane depends on a combination of seedling growth and resprouting of damaged canopy trees. Non-pioneer species tend to dominate the early recovery process due to their ability to survive the storm and generate new branches. Changes in the litter inputs, litter decomposition rates, and forest carbon pool size after hurricanes and typhoons are complicated, and depend mainly on the stand type, stand location, and elapsed time after disturbance. The recovery pathways and mechanisms relate to the severity of canopy damage on a broad scale, as well as to light and moisture availability. Rapid flowering and fruiting, combined with an adequate soil seed bank, contribute to the recovery of damaged forests. Assessments of the impacts of these storms at landscape and regional scales have also received much attention. These studies used modeling combined with meteorological data, remote sensing, and field surveys to simulate and quantify the impacts and the ecosystem response. Modeling can reveal the effects of topography on wind direction and the relationship between forest damage and the wind speed and duration, and can determine both landscape- and site-level exposure to disturbance. The paper concludes with a discussion of potential directions for future research in China.

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仝川,杨玉盛.飓风和台风对沿海地区森林生态系统的影响.生态学报,2007,27(12):5337~5344

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