Special issue: Complex remote sensing-assisted forest surveys
Category : Research article
Zsofia Koma, Johannes Breidenbach. (2025). Large-scale validation of forest attribute maps across different spatial resolutions. Silva Fennica vol. 59 no. 2 article id 24061. https://doi.org/10.14214/sf.24061
Keywords airborne laser scanning; National Forest Inventory; forest resource mapping; resolution dependence
Highlights The study assesses stand-level uncertainty of biomass, volume, basal area, and Lorey’s height estimates resulting from the prediction of maps across varying spatial resolutions (1–30 m); The changes of RMSE and bias across the different spatial resolutions were generally small (< 5%) for additive forest attributes such as biomass, volume, and basal area; The changes of RMSE and bias were also small for Lorey’s height as a non-additive forest attribute if the resolution difference was less than 2 times of the native resolution; The models fitted at the resolution of the NFI plot size can be used to produce forest attribute maps at 10 m resolution without concerning increases in uncertainty at stand-level.
Brahim Meskour, Adnane Labbaci, Moussa Ait El Kadi, Oualid Hakam, Victor Ongoma, Mohammed Hssaisoune, Abdellaali Tairi, Mohammed El Hafyani, Lhoussaine Bouchaou. (2025). Drought and vegetation dynamics in dryland of arganeraie biosphere reserve in Morocco: toward an understanding of the impact of environmental shocks on the Agro-sylvo-pastoral system. Silva Fennica vol. 59 no. 2 article id 24056. https://doi.org/10.14214/sf.24056
Keywords drought; ecosystem resilience; GIAHS; Morocco
Highlights Argan agro-sylvo-pastoral system is a unique agro-ecosystem of arid land in the world; Climate variability, drought and vegetation dynamic are assessed in the GIAHS site using a combination of remote sensing and field investigation; Findings highlights a significant decrease in agricultural and woodland cover and consistent increase in drought; Resilience implications are discussed to inform socio-economic actors.
Category : Discussion article
Sara Franceschi, Caterina Pisani, Lorenzo Fattorini, Piermaria Corona. (2025). Statistical considerations for enhanced forest resource mapping. Silva Fennica vol. 59 no. 2 article id 24063. https://doi.org/10.14214/sf.24063
Keywords design-based inference; consistency; kNN mapping; pseudo-population bootstrap; Random Forest mapping
