Restoration plantations accelerate dead wood accumulation in tropical premontane forests
Restoration plantations accelerate dead wood accumulation in tropical premontane forests
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恢复种植园加速了热带山前森林中死木的积累
DOI：
10.1016/j.foreco.2022.120015
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发表时间：
2022
影响因子：
3.7
通讯作者：
Leighton Reid, J.
中科院分区：
文献类型：
--
作者：
Fernandez Barrancos, Estefania P.;Marquis, Robert J.;Leighton Reid, J.
枯木储存了全球森林碳储量的10-20%，但其在热带次生林中的恢复和恢复却鲜有记录。在这项研究中，我们评估了（1）的恢复模式的死木材量在整个时序的次生热带森林，曾经是前咖啡种植园，和（2）的效率，两种常见的恢复策略，以恢复死木材量类似于那些发现在古老的森林，都在热带山区景观南部哥斯达黎加。恢复策略包括人工林和自然更新。种植园包括两个地方性（Terminalia amazoniaandVochysia guatemalensis）和两个归化（Inga edulisandErtyhrina poeppegiana）物种成行种植的地块。自然再生包括没有种植树木的地块，但农业或牲畜被排除在外，尽管围栏和植被被允许自然再生。我们假设：（1）枯木体积随着林龄的增加而增加，遵循逻辑形状，（2）与自然再生林相比，恢复人工林更快地恢复枯木体积。我们测量了35个森林片段，以前的咖啡种植园或目前的古老森林和10个恢复地块，包含自然再生或恢复种植园，以前休耕或牧场使用带状断面的枯木体积。死木蓄积量随林龄的增加呈对数增长，从3-5年生的极低值开始，迅速增长（6-50年生），50年生后以较高且相对稳定的值结束。此外，人工林（16至17年）恢复了> 100年的古老森林中41%的死木体积，而同龄的自然再生林仅恢复了古老森林中1.7%的死木体积。我们的研究表明，恢复人工林不仅加快了地上生物量的恢复，而且还加快了山前新热带生态系统中枯木的恢复。这表明植树对碳储存有积极影响，并可能保护与枯木相关的生物多样性。
Dead wood stores 10–20% of global forest carbon stocks, but its recovery and restoration in secondary tropical forests are poorly documented. In this study, we evaluated (1) the recovery pattern of dead wood volumes across a chronosequence of secondary tropical forests that used to be former coffee plantations, and (2) the efficiency of two common restoration strategies to recover dead wood volumes similar to those found in old-growth forests, all in a tropical premontane landscape in southern Costa Rica. Restoration strategies consisted of plantations and natural regeneration. Plantations consist of plots where two endemic (Terminalia amazoniaandVochysia guatemalensis) and two naturalized (Inga edulisandErtyhrina poeppegiana) species were planted in rows. Natural regeneration consists of plots where no trees were planted, but where agriculture or cattle are excluded though fencing and vegetation is allowed to regenerate naturally. We hypothesized that (1) dead wood volumes increase with forest age following a logistic shape, and that (2) restoration plantations recover dead wood volumes more quickly compared to naturally regenerated forests. We measured dead wood volumes in a total of 35 forest fragments that were former coffee plantations or are currently old-growth forests and 10 restoration plots containing either natural regeneration or restoration plantations that were former fallow or pasture using strip transects. Dead wood volumes significantly increased with forest age following a logistic shape, starting with very low values in early ages (3–5 years), increasing rapidly (6–50 years), and ending with high and relatively stable values after 50 years of age. In addition, plantations (16 to 17 years old) recovered 41% of dead wood volumes found in old-growth forests > 100 years old, whereas naturally regenerated forests of the same age only recovered 1.7% of dead wood volumes found in old-growth forests. Our study shows that restoration plantations not only accelerate the recovery of above ground biomass, but also accelerate the recovery of dead wood in premontane Neotropical ecosystems. This indicates that tree planting positively affects carbon storage, and potentially the preservation of dead wood-associated biodiversity.
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作者：
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DOI：
--
发表时间：
2009
期刊：
影响因子：
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作者：
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通讯作者：
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