The fog regime in a tropical montane cloud forest in Brazil and its effects on water, light and microclimate
The fog regime in a tropical montane cloud forest in Brazil and its effects on water, light and microclimate
复制标题
巴西热带山地云林的雾态及其对水、光和小气候的影响
DOI：
10.1016/j.agrformet.2018.11.030
复制
发表时间：
2019
影响因子：
6.2
通讯作者：
Bittencourt P
中科院分区：
文献类型：
--
作者：
Bittencourt P
雾是热带山地云雾森林(TMCFs)的常见现象。这些生态系统对邻近低地地区的供水是重要的，这在很大程度上取决于雾对TCMF蒸散率和水文平衡的影响。在精细的时间分辨率上了解雾的状况，对于预测TMCFs的植物功能和气候变化的影响，特别是对这些森林提供的关键水文服务是关键。在这里，我们结合了一套微气象和水文传感器和能见度计，这是一个可靠的雾发生传感器，以收集关于雾的频率、持续时间和时间及其对巴西TMCF的水输入、光可用性和小气候变异性的贡献的细粒度信息。尽管雾出现在的天数中，但雾在日尺度和季节尺度上都有很大的变化，主要发生在夜间和雨季。每棵树每年截获约1,200升雾(259 mm或总净降雨量的10.7%)。雾还增加了伴随的雾-雨事件提供的净降水量。由于TMCF上额外的雾水输入，每月净降水量与降雨量之比为0.96，远高于典型的低地雨林的0.72。云量，而不是雾，决定了光能利用率和小气候日变化(气温和水汽压差)。雾的高度可变性表明，理解TMCFs的功能需要将植物功能与雾和云发生的细粒度数据相结合。我们讨论了我们的结果对TMCFs工厂功能的可能影响。
Fog is a frequent phenomenon in tropical montane cloud forests (TMCFs). These ecosystems are important to the water supply of adjacent lowland regions which is largely determined by the effect of fog on TCMF evapotranspiration rates and hydrological balance. Understanding fog regimes at fine-grained temporal resolution is key to predict plant functioning and effects of climatic changes in TMCFs, especially on key hydrological services that these forests provide. Here, we combine a suite of micrometeorological and hydrological sensors with a visibilimeter, a reliable sensor of fog occurrence, to gather fine-grained information on fog frequency, duration and timing and its contribution to water inputs, light availability and microclimatic variability in a Brazilian TMCF. Despite occurring on 64% of days, fog was highly variable at daily and seasonal scales, occurring mostly at night and during the rainy season. Approximately 1200 liters of fog were intercepted per tree per year (259 mm or 10.7% of total net precipitation). Fog also increased net precipitation provided by concomitant fog-rain events. Monthly net precipitation to precipitation ratio, a measure of how much water arrives at the soil and how much evaporates or is intercepted by the canopy, was 0.96 - much higher than the 0.72 typical of lowland rainforest, due to the additional fog water input on TMCF. Cloudiness, and not fog, dominated light availability and inter-day microclimatic variability (air temperature and vapor pressure deficit). High fog regime variability indicates that understanding TMCFs functioning requires integration of plant function with fine-grained data of fog and cloud occurrence. We discuss possible consequences of our results to TMCFs plant functioning.
登录
查看更多内容
迎风和背风山林云水：地形云水的稳定同位素特征
影响因子：
5.4
作者：
M. Scholl;T. Giambelluca;S. Gingerich;M. Nullet;L. Loope
通讯作者：
L. Loope
影响因子：
6.4
作者：
L. Salemi;J. D. Groppo;R. Trevisan;J. M. Moraes;S. Ferraz;João Paulo Villani;P. Duarte-Neto;L. Martinelli
通讯作者：
L. Salemi;J. D. Groppo;R. Trevisan;J. M. Moraes;S. Ferraz;João Paulo Villani;P. Duarte-Neto;L. Martinelli
巴西南部和东南部大西洋森林中云雾森林和其他森林亚型的植物地理学分析
影响因子：
3.4
作者：
Ricardo Bertoncello;Kikyo Yamamoto;L. D. Meireles;G. J. Shepherd
通讯作者：
G. J. Shepherd
DOI：
--
发表时间：
2012
期刊：
影响因子：
--
作者：
Adrian Newton
通讯作者：
Adrian Newton
影响因子：
1.4
作者：
S. Gotsch;H. Asbjornsen;G. Goldsmith
通讯作者：
G. Goldsmith