International Journal of Forestry Research / 2012 / Article / Fig 5

Research Article

Large-Scale Forest Modeling: Deducing Stand Density from Inventory Data

Figure 5

Modeled ( -axis) versus measured ( -axis) biomass (a, c) and increment (b, d) for European forest cohorts (defined by region, species, and age). (a, b): fitting measured volume, increment and age to a single stand closure ( ) (model A). (c, d): fitting measured volume, increment and age to one per age cohort (model B). In all fits a single productivity index ( ) for each region and species was fitted for all age classes. Cross-validated percentage root mean squared error (PRMSE) was 37, 26, 30, and 22 for the models used in (a), (b), (c), and (d), respectively.
934974.fig.005a
(a)
934974.fig.005b
(b)
934974.fig.005c
(c)
934974.fig.005d
(d)

We are committed to sharing findings related to COVID-19 as quickly and safely as possible. Any author submitting a COVID-19 paper should notify us at help@hindawi.com to ensure their research is fast-tracked and made available on a preprint server as soon as possible. We will be providing unlimited waivers of publication charges for accepted articles related to COVID-19. Sign up here as a reviewer to help fast-track new submissions.