Bamboo is widely distributed in Southeast Asia, Africa, and Latin America. As a major non-wood forest product and wood substitute, bamboo is of increasing interest to ecologists owing to its rapid growth and correspondingly high potential for mitigating climate change. With a long history of production and utilization of bamboo, China is one of the countries with the richest bamboo resources and largest area of bamboo forest, and has paid unprecedented attention in recent decades to management of its bamboo forests. This review summarizes the versatility of bamboo in terms of its ecological benefits including carbon sequestration, water and soil conservation, its benefits for socioeconomic development, and its potential to mitigate climate change. Current problems, and the future potential of and challenges to rapidly expanding bamboo forests under both wider use of intensive management and the effects of global warming, are also discussed.
Alongside global warming, droughts are expected to increase in frequency, severity, and extent in the near future, which will likely result in significant impacts on forest growth, production, structure, composition, and ecosystem services. However, due to spatial and temporal characteristics, it is difficult to monitor and assess the potential effects of droughts. Remote sensing can provide an effective way to obtain real-time conditions of forests affected by drought and offer a range of spatial and temporal insights into drought-induced changes to forest ecosystem structure, function, and services. Remote sensing is rapidly developing as more satellites are launched. In situ and remotely sensed data fusion techniques have achieved notable success in assessing drought-induced damage to forests and carbon cycles. Even so, constraints still exist when using satellite data. The objectives of this review are to (1) briefly review existing data sources and methods of remote sensing;(2) synthesize current applications and contributions of remote sensing in monitoring and estimating impacts of droughts on forest ecosystems; and (3) highlight research gaps and future challenges.Résumé : Avec le réchauffement global, on s'attend à ce que la fréquence, la sévérité et l'étendue des sécheresses augment dans un futur rapproché, conduisant vraisemblablement à des impacts significatifs sur la croissance, la production, la structure, la composition et les services des écosystèmes forestiers. Cependant, compte tenu des caractéristiques spatiales et temporelles, il est difficile de faire le suivi et d'évaluer les effets potentiels des sécheresses. La télédétection peut fournir un moyen efficace pour obtenir en temps réel les conditions des forêts affectées par la sécheresse et d'offrir un ensemble de perceptions spatiales et temporelles des changements induits par la sécheresse dans la structure, la fonction et les services des écosystèmes forestiers. La télédétection se développe rapidement avec le lancement de nouveaux satellites. Les techniques de fusion des données satellites et in situ ont connu un succès remarquable dans l'évaluation des dommages induits par la sécheresse sur les forêts et les cycles du carbone. Tout de même, il existe toujours des contraintes dans l'utilisation des données satellites. Les objectifs de cette revue consistaient à (1) explorer rapidement les sources de données existantes et les méthodes de la télédétection; (2) synthétiser les applications courantes et les contributions de la télédétection dans le suivi et l'estimation des impacts des sécheresses sur les écosystèmes forestiers; et (3) souligner les lacunes et les défis à venir. [Traduit par la Rédaction]
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