Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1111/gcb.15072 |
Monitoring tropical forests under a functional perspective with satellite‐based vegetation optical depth | |
Gaia Vaglio Laurin; Cristina Vittucci; Gianluca Tramontana; Paolo Ferrazzoli; Leila Guerriero; Dario Papale | |
2020-04-23 | |
发表期刊 | Global Change Biology |
出版年 | 2020 |
英文摘要 | Monitoring ecosystem functions in forests is a priority in a climate change scenario, as climate‐induced events may initially alter the functions more than slow‐changing attributes, such as biomass. The ecosystem functional properties (EFPs) are quantities that characterize key ecosystem processes. They can be derived by point observations of gas and energy exchanges between the ecosystems and the atmosphere that are collected globally at FLUXNET flux tower sites and upscaled at ecosystem level. The properties here considered describe the ability of ecosystems to optimize the use of resources for carbon uptake. They represent functional forest information, are dependent on environmental drivers, linked to leaf traits and forest structure, and influenced by climate change effects. The ability of vegetation optical depth (VOD) to provide forest functional information is investigated using 2011–2014 satellite data collected by the Soil Moisture and Ocean Salinity mission and using the EFPs as reference dataset. Tropical forests in Africa and South America were analyzed, also according to ecological homogeneous units. VOD jointly with water deficit information explained 93% and 87% of the yearly variability in both flux upscaled maximum gross primary productivity and light use efficiency functional properties, in Africa and South America forests respectively. Maps of the retrieved properties evidenced changes in forest functional responses linked to anomalous climate‐induced events during the study period. The findings indicate that VOD can support the flux upscaling process in the tropical range, affected by high uncertainty, and the detection of forest anomalous functional responses. Preliminary temporal analysis of VOD and EFP signals showed fine‐grained variability in periodicity, in signal dephasing, and in the strength of the relationships. In selected drier forest types, these satellite data could also support the monitoring of functional dynamics. |
领域 | 气候变化 ; 资源环境 |
URL | 查看原文 |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/248935 |
专题 | 气候变化 资源环境科学 |
推荐引用方式 GB/T 7714 | Gaia Vaglio Laurin,Cristina Vittucci,Gianluca Tramontana,等. Monitoring tropical forests under a functional perspective with satellite‐based vegetation optical depth[J]. Global Change Biology,2020. |
APA | Gaia Vaglio Laurin,Cristina Vittucci,Gianluca Tramontana,Paolo Ferrazzoli,Leila Guerriero,&Dario Papale.(2020).Monitoring tropical forests under a functional perspective with satellite‐based vegetation optical depth.Global Change Biology. |
MLA | Gaia Vaglio Laurin,et al."Monitoring tropical forests under a functional perspective with satellite‐based vegetation optical depth".Global Change Biology (2020). |
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