Plant carbon and water fluxes in tropical montane cloud forests
Plant carbon and water fluxes in tropical montane cloud forests
复制标题
热带山地云林植物碳和水通量
DOI：
10.1017/s0266467416000341
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发表时间：
2016
影响因子：
1.4
通讯作者：
G. Goldsmith
中科院分区：
文献类型：
--
作者：
S. Gotsch;H. Asbjornsen;G. Goldsmith
翻译后摘要：热带山地云雾林（TMCFs）是动态的生态系统定义的频繁，但间歇性，接触雾。由此产生的小气候可以在短的空间和时间尺度上变化很大，影响TMCF植物的生理生态。我们综合了迄今为止在叶、植物和生态系统尺度上对TMCF碳和水通量的研究，然后将这种综合与热带低地森林生态系统联系起来。平均光饱和光合作用低于低地森林，可能是由于持续减少辐射的影响，导致遮荫驯化。按生态系统的比例，年度净初级生产力的措施也较低。平均蒸腾速率，从叶的生态系统的规模，也低于在低地网站，可能是由于较低的大气需水量，虽然有相当大的重叠范围。最后，虽然碳的利用效率似乎相对不变，有限的证据表明，水的利用效率一般随着海拔高度的增加，也许是由于增加云量产生更强的影响比光合作用的蒸汽压力赤字。研究结果揭示了TMCFs和它们的低地对应物之间在碳和水平衡方面的明显差异，并提出了现在和将来理解TMCFs生态生理学的许多悬而未决的问题。
Abstract: Tropical montane cloud forests (TMCFs) are dynamic ecosystems defined by frequent, but intermittent, contact with fog. The resultant microclimate can vary considerably over short spatial and temporal scales, affecting the ecophysiology of TMCF plants. We synthesized research to date on TMCF carbon and water fluxes at the scale of the leaf, plant and ecosystem and then contextualized this synthesis with tropical lowland forest ecosystems. Mean light-saturated photosynthesis was lower than that of lowland forests, probably due to the effects of persistent reduced radiation leading to shade acclimation. Scaled to the ecosystem, measures of annual net primary productivity were also lower. Mean rates of transpiration, from the scale of the leaf to the ecosystem, were also lower than in lowland sites, likely due to lower atmospheric water demand, although there was considerable overlap in range. Lastly, although carbon use efficiency appears relatively invariant, limited evidence indicates that water use efficiency generally increases with altitude, perhaps due to increased cloudiness exerting a stronger effect on vapour pressure deficit than photosynthesis. The results reveal clear differences in carbon and water balance between TMCFs and their lowland counterparts and suggest many outstanding questions for understanding TMCF ecophysiology now and in the future.
DOI：
10.1007/978-3-642-38137-9
发表时间：
2013
期刊：
--
影响因子：
--
作者：
J. Bendix;E. Beck;A. Bräuning;F. Makeschin;R. Mosandl;S. Scheu;W. Wilcke
通讯作者：
J. Bendix;E. Beck;A. Bräuning;F. Makeschin;R. Mosandl;S. Scheu;W. Wilcke
秘鲁安第斯山脉两个中海拔热带山地森林地块的碳季节性生产、分配和循环
影响因子：
1.5
作者：
Huasco W
通讯作者：
Huasco W
秘鲁亚马逊流域西南部两片低地热带森林的生产力、新陈代谢和碳循环
影响因子：
1.5
作者：
Malhi Y
通讯作者：
Malhi Y