Comparison of three global canopy height maps and their applicability to biodiversity modeling: Accuracy issues revealed

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F86652079%3A_____%2F24%3A00599713" target="_blank" >RIV/86652079:_____/24:00599713 - isvavai.cz</a>

Alternative codes found

RIV/67985939:_____/24:00599713 RIV/60460709:41330/24:100064 RIV/00216208:11310/24:10486645

Result on the web

<a href="https://doi.org/10.1002/ecs2.70026" target="_blank" >https://doi.org/10.1002/ecs2.70026</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1002/ecs2.70026" target="_blank" >10.1002/ecs2.70026</a>

Result language

angličtina

Original language name

Comparison of three global canopy height maps and their applicability to biodiversity modeling: Accuracy issues revealed

Original language description

Global mapping of forest height is an extremely important task for estimating habitat quality and modeling biodiversity. Recently, three global canopy height maps have been released, the global forest canopy height map (GFCH), the high-resolution canopy height model of the Earth (HRCH), and the global map of tree canopy height (GMTCH). Here, we assessed their accuracy and usability for biodiversity modeling. We examined their accuracy by comparing them with the reference canopy height models derived from airborne laser scanning (ALS). Our results show considerable differences between the evaluated maps. The root mean square error ranged between 10 and 18 m for GFCH, 9-11 m for HRCH, and 10-17 m for GMTCH, respectively. GFCH and GMTCH consistently underestimated the height of all canopies regardless of their height, while HRCH tended to overestimate the height of low canopies and underestimate tall canopies. Biodiversity models using predicted global canopy height maps as input data are sufficient for estimating simple relationships between species occurrence and canopy height, but their use leads to a considerable decrease in the discrimination ability of the models and to mischaracterization of species niches where derived indices (e.g., canopy height heterogeneity) are concerned. We showed that canopy height heterogeneity is considerably underestimated in the evaluated global canopy height maps. We urge that for temperate areas rich in ALS data, activities should concentrate on harmonizing ALS canopy height maps rather than relying on modeled global products.

Czech name

—

Czech description

—

Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

—

OECD FORD branch

10618 - Ecology

Project

<a href="/en/project/SS02030018" target="_blank" >SS02030018: Center for Landscape and Biodiversity</a><br>

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2024

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Ecosphere

ISSN

2150-8925

e-ISSN

2150-8925

Volume of the periodical

15

Issue of the periodical within the volume

10

Country of publishing house

US - UNITED STATES

Number of pages

18

Pages from-to

e70026

UT code for WoS article

001330430100001

EID of the result in the Scopus database

2-s2.0-85206365796