02154nab a2200277 i 4500 BR-BrBNA 20260331122719.0 260331b2019 bl.qr|pooa||| 00| 0 eng | BR-BrBNA eng U10 3240 F08 Tonini, Helio Wink, Charlote Silva, Andrey Gregory da Mota Ferreira e Sampling Alternatives for Eucalyptus Trees in Integrated Crop‑Livestock-Forest System Publicação on-line; 34 ref.; 3 tables; 2 illus.; Summary (En) ABSTRACT The aim of this paper was to compare methods and sampling procedures applied to eucalyptus grown under different spatial arrangements in an integrated crop-livestock-forest system (ICLF). The study was carried out in Sinop county, Mato Grosso state, Brazil. Arrangements combining fixed and variable area methods to simple random and systematic sampling were tested. Precision, accuracy, efficiency, and diameter-distribution measurements were used for selection of the best sampling arrangement. The sampling intensity, sample unit optimal size and the relative efficiency have been changed depending on the spatial arrangement for 10% sampling error and 95% probability level. The fixed area method based on systematic sampling, as well as smaller sample units with eight to nine plants (48 m2to 54 m2 ) were the most accurate; however, larger plots (192 m2to 216 m2) were more efficient. All sample units size provided good estimates on the number of trees by diameter classes. Keywords: forest inventory, Eucalyptus grandis × Eucalyptus urophylla, agroforestry systems. INVENTÁRIO FLORESTAL AGROSSILVICULTURA EUCALYPTUS GRANDIS EUCALYPTUS UROPHYLLA 2929 347952 Rio de Janeiro-RJ Instituto de Florestas - UFRRJ 1994 2025-0451 Floresta e Ambiente (Brazil) 1415-0980 / ISSN 2179-8087 0nline v. 26(3) p. 1-9; (2019) BR2026000231 https://www.scielo.br/j/floram/a/HQjYhwDbb6MV5RPv6hG9t7m/?format=pdf&lang=en ANA 341169 341169