Claim · model-written summary
Stratifying regeneration-class stands by density reduced volume variability by 9 to 20%.
Verbatim
e0“Dividing strata consisted of stands in regeneration class according to stand density index allowed to decrease the volume variability from 9 to 20%”
Title
Zwiększenie efektywności inwentaryzacji lasu metodą losowania warstwowego
Banaś, Jan; Drozd, Marek; Zięba, Stanisław; et al. Polskie Towarzystwo Leśne 2017. doi:10.26202/sylwan.2017074
Other claims from this paper (7)
- Observation Tree volume did not differ significantly between sites for stands up to 70 years old.
- Observation Tree volume differed significantly between sites in older stands.
- Method / resource Site-based substrata in stands older than 70 years reduced volume variability by 10 to 57%.
- Observation Mean tree volume on similar sites did not differ significantly among subdistricts in a forest district.
- Method / resource Forest-district strata were larger and had more plots than subdistrict strata.
- Method / resource District-wide stratification significantly reduced volume standard error.
- Method / resource District-wide stratification improved forest-inventory effectiveness.