Fig. 5: Frequency distribution of aboveground living biomass carbon density (MgC ha−1). | Communications Earth & Environment

Fig. 5: Frequency distribution of aboveground living biomass carbon density (MgC ha−1).

From: Carbon carrying capacity in primary forests shows potential for mitigation achieving the European Green Deal 2030 target

Fig. 5

Distribution of carbon densities compared for the site data and global modelled data from GlobBiomass97 and GeoCarbon98 for the primary forest site locations, for a all forest types, b conifer species, c broadleaf species, d mixed species. The dataset for all forest types included sites of unidentified forest types and thus was larger than the combined broadleaf plus conifer plus mixed datasets. Results for paired two sample t-test one-tail for the site level data are presented for each forest category to show the statistical differences. All forests: Site data and GlobBiomass t = 59.47, P < 0.0001, n = 5942. All forests: Site data and GeoCarbon t = 53.16, P < 0.0001, n = 3778. Conifer: Site data and GlobBiomass t = 20.70, P < 0.0001, n = 720. Conifer: Site data and GeoCarbon t = 19.80, P < 0.0001, n = 597. Broadleaf: Site data and GlobBiomass t = 29.55, P < 0.0001, n = 1176. Broadleaf: Site data and GeoCarbon t = 38.21, P < 0.0001, n = 774. Mixed forest: Site data and GlobBiomass t = 24.24, P < 0.0001, n = 182. Mixed forest: Site data and GeoCarbon t = 33.61, P < 0.0001, n = 178.

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