Three decades of remote sensing analysis of forest decline related to climate change: a bibliometric study

José Luis Gallardo-Salazar; Cuauhtémoc Sáenz-Romero; Roberto Lindig-Cisneros; Leonel López-Toledo; José A. Blanco-García; Ángel R. Endara-Agramont

doi:10.18172/cig.5639

Authors

José Luis Gallardo-Salazar Instituto de Investigaciones Agropecuarias y Forestales, Universidad Michoacana de San Nicolás de Hidalgo, Morelia 58880, Michoacán, México https://orcid.org/0000-0002-6172-2942
Cuauhtémoc Sáenz-Romero Instituto de Investigaciones sobre los Recursos Naturales, Universidad Michoacana de San Nicolás de Hidalgo, Morelia 58330, Michoacán, México https://orcid.org/0000-0002-8945-3959
Roberto Lindig-Cisneros https://orcid.org/0000-0003-2542-7038
Leonel López-Toledo https://orcid.org/0000-0003-3424-5746
Arnulfo Blanco-García https://orcid.org/0000-0001-7732-4845
Ángel R. Endara-Agramont https://orcid.org/0000-0001-8413-6551

DOI:

https://doi.org/10.18172/cig.5639

Keywords:

scientometrics, forest mortality, UAV, global warming, forest resources

Abstract

Climate change is predicted to lead to increasingly intense and hotter droughts, causing physiological weakness followed by forest decline in many regions of the world. Long- and short-range remote sensing (satellites and unmanned aerial vehicles, commonly called drones) can sense drought-induced changes in vegetation. Although several studies have addressed forest decline events, none have analyzed the forest decline attributable to climate change using remote sensing in a concise manner. A bibliometric analysis was carried out to characterize the scientific production reported in the Web of Science repository. The search descriptors were a combination of keywords related to forest decline and remote sensing. The results showed 278 articles published between 1989 and 2021 in 92 journals, with an average annual increase of 31%. A total of 29 nodes and 220 scientific collaboration links were located, mainly led by researchers from USA, Germany and China. Keyword analysis using World-TreeMap reflected the association of different key forest decline phenomena such as drought stress and climate change. Although the use of satellite information to study and understand forest decline has been reported for just over three decades, the most notable feature of the present research was the limited role of drones with only 5 studies. This reveals an area of opportunity to take advantage of the main strengths of drones, i.e., spatial and temporal resolution, low cost compared to manned flights, and centimeter accuracy. Therefore, it is strongly recommended to increase studies to improve the use of multispectral sensors, thermal and LiDAR technology for long-term monitoring of forest decline related to climate change.

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References

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