A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
Estimation of forest stand characteristics using individual tree detection, stochastic geometry and a sequential spatial point process model (2022)


Mehtätalo, L., Yazigi, A., Kansanen, K., Packalen, P., Lähivaara, T., Maltamo, M., Myllymäki, M., & Penttinen, A. (2022). Estimation of forest stand characteristics using individual tree detection, stochastic geometry and a sequential spatial point process model. International Journal of Applied Earth Observation and Geoinformation, 112, Article 102920. https://doi.org/10.1016/j.jag.2022.102920


JYU-tekijät tai -toimittajat


Julkaisun tiedot

Julkaisun kaikki tekijät tai toimittajatMehtätalo, Lauri; Yazigi, Adil; Kansanen, Kasper; Packalen, Petteri; Lähivaara, Timo; Maltamo, Matti; Myllymäki, Mari; Penttinen, Antti

Lehti tai sarjaInternational Journal of Applied Earth Observation and Geoinformation

ISSN1569-8432

eISSN1872-826X

Julkaisuvuosi2022

Volyymi112

Artikkelinumero102920

KustantajaElsevier BV

JulkaisumaaAlankomaat

Julkaisun kielienglanti

DOIhttps://doi.org/10.1016/j.jag.2022.102920

Julkaisun avoin saatavuusAvoimesti saatavilla

Julkaisukanavan avoin saatavuusKokonaan avoin julkaisukanava

Julkaisu on rinnakkaistallennettu (JYX)https://jyx.jyu.fi/handle/123456789/82579


Tiivistelmä

Airborne Laser Scanning (ALS) results in point-wise measurements of canopy height, which can further be used for Individual Tree Detection (ITD). However, ITD cannot find all trees because small trees can hide below larger tree crowns. Here we discuss methods where the plot totals and means of tree-level characteristics are estimated in such context. The starting point is a previously presented Horvitz–Thompson-like (HT-like) estimator, where the detectability is based on the larger tree crowns and a tuning parameter that models the detection condition. We propose a new method which is based on modeling the spatial pattern of hidden tree locations using a sequential spatial point process model, with a tuning parameter . We also explore whether the variability of the tuning parameters and can be predicted using ALS features to improve the predictions. The accuracy of stand density, dominant height and mean height is used as comparison criteria in a cross-validation procedure. The HT-like estimator with empirically estimated tuning parameter performed the best. The overall performance of the new method was comparable. The new method was computationally less demanding, which makes it attractive for practical use.


YSO-asiasanatmetsätpuut (kasvit)puustotiheysinventointikaukokartoitusmetsänarviointimittausmenetelmätmittauslaitteetlaseritlaserlaitteetlasertekniikka

Vapaat asiasanatforest inventory; Airborne Laser Scanning; Horvitz-Thompson-like estimator; stand density:tree height


Liittyvät organisaatiot


OKM-raportointiKyllä

Raportointivuosi2022

JUFO-taso1


Viimeisin päivitys 2024-22-04 klo 19:37