“…In this sense, some studies have used low-density ALS data to estimate forest parameters such as tree height, crown diameter, basal area, stem density, volume (Guerra-Hernández, Tomé, & González-Ferreiro, 2016a;Hayashi, Weiskittel, & Sader, 2014;Holopainen et al, 2010;Mehtätalo, Virolainen, Tuomela, & Packalen, 2015;Montealegre, Lamelas, de la Riva, García-Martín, & Escribano, 2016;Naesset, 2002;Naesset & Økland, 2002;Popescu, Randolph, & Ross, 2003) as well as biomass (García-Gutiérrez, Martínez-Álvarez, Troncoso, & Riquelme, 2015;Guerra-Hernández et al, 2016b;Hall, Burke, Box, Kaufmann, & Stoker, 2005;Montagnoli et al, 2015;Shendryk, Margareta, Leif, Natascha, 2014). In addition, some of them have compared different point densities (González-Ferreiro et al, 2013;Singh, Gang, James, & Ross, 2015).…”