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Open AccessArticle

Estimating Stand Volume and Above-Ground Biomass of Urban Forests Using LiDAR

1
Department of Scienze Agro-Ambientali e Territoriali, University of Bari Aldo Moro, Via Amendola 165/A 70126 Bari, Italy
2
Center for Global Change and Earth Observations (CGCEO), Michigan State University, East Lansing, MI 48823, USA
*
Author to whom correspondence should be addressed.
Academic Editors: Nicolas Baghdadi and Prasad S. Thenkabail
Remote Sens. 2016, 8(4), 339; https://doi.org/10.3390/rs8040339
Received: 4 March 2016 / Revised: 6 April 2016 / Accepted: 14 April 2016 / Published: 19 April 2016
Assessing forest stand conditions in urban and peri-urban areas is essential to support ecosystem service planning and management, as most of the ecosystem services provided are a consequence of forest stand characteristics. However, collecting data for assessing forest stand conditions is time consuming and labor intensive. A plausible approach for addressing this issue is to establish a relationship between in situ measurements of stand characteristics and data from airborne laser scanning (LiDAR). In this study we assessed forest stand volume and above-ground biomass (AGB) in a broadleaved urban forest, using a combination of LiDAR-derived metrics, which takes the form of a forest allometric model. We tested various methods for extracting proxies of basal area (BA) and mean stand height (H) from the LiDAR point-cloud distribution and evaluated the performance of different models in estimating forest stand volume and AGB. The best predictors for both models were the scale parameters of the Weibull distribution of all returns (except the first) (proxy of BA) and the 95th percentile of the distribution of all first returns (proxy of H). The R2 were 0.81 (p < 0.01) for the stand volume model and 0.77 (p < 0.01) for the AGB model with a RMSE of 23.66 m3·ha−1 (23.3%) and 19.59 Mg·ha−1 (23.9%), respectively. We found that a combination of two LiDAR-derived variables (i.e., proxy of BA and proxy of H), which take the form of a forest allometric model, can be used to estimate stand volume and above-ground biomass in broadleaved urban forest areas. Our results can be compared to other studies conducted using LiDAR in broadleaved forests with similar methods. View Full-Text
Keywords: urban forest; Remote sensing; LiDAR; Stand volume; above-ground biomass; forest allometric model urban forest; Remote sensing; LiDAR; Stand volume; above-ground biomass; forest allometric model
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MDPI and ACS Style

Giannico, V.; Lafortezza, R.; John, R.; Sanesi, G.; Pesola, L.; Chen, J. Estimating Stand Volume and Above-Ground Biomass of Urban Forests Using LiDAR. Remote Sens. 2016, 8, 339.

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