Research

Pedley, D., & Morgenroth, J. (2025). Detecting and measuring fine-scale urban tree canopy loss with deep learning and remote sensing. ISPRS Open Journal of Photogrammetry and Remote Sensing, 15, 100082. https://doi.org/https://doi.org/10.1016/j.ophoto.2025.100082.

Sharma, G., Morgenroth, J., Richards, D. R., & Ye, N. (2025). Advancing urban forest and ecosystem service assessment through the integration of remote sensing and i-Tree Eco: A systematic review. Urban Forestry & Urban Greening, 104, 128659. https://doi.org/https://doi.org/10.1016/j.ufug.2024.128659.

Deng, B., Boden, J., Ye, N., Morgenroth, J., Campbell, M., Eggleton, P., McLeod, G., & Hobbs, M. (2025). Life in green: Associations between greenspace availability and mental health over the lifecourse – A 40-year prospective birth cohort study. Environment International, 195, 109223. https://doi.org/https://doi.org/10.1016/j.envint.2024.109223.

Song, Z., Xu, C., Luan, Q., & Li, Y. (2024). Multitemporal UAV study of phenolic compounds in slash pine canopies. Remote Sensing of Environment, 315, 114454. https://doi.org/10.1016/j.rse.2024.114454.

Chen, A., Xu, C., Zhang, M., Guo, J., Xing, X., Yang, D., Xu, B., & Yang, X. (2024). Cross-scale mapping of above-ground biomass and shrub dominance by integrating UAV and satellite data in temperate grassland. Remote Sensing of Environment, 304, 114024. https://doi.org/https://doi.org/10.1016/j.rse.2024.114024.

Xu, C., Manley, B., & Ye, N. (2023). Mapping minor plantation species for New Zealand’s small-scale forests using Sentinel-2 satellite data. New Zealand Journal of Forestry Science 53(12) https://doi.org/https://doi.org/10.33494/nzjfs532023x314x.

Ye, N., Morgenroth, J. and Xu, C. (2023) Improving Neural Network classification of native forest in New Zealand with phenological features. International Journal of Remote Sensing, 44(19), 6147-6166 https://doi.org/10.1080/01431161.2023.2264496.

Niu X., Song Z., Xu C., Wu C., Luan Q., Jiang J. and Li Y. (2023) Prediction of Needle Physiological Traits Using UAV Imagery for Breeding Selection of Slash Pine. Plant Phenomics 5 http://dx.doi.org/10.34133/plantphenomics.0028.

Salekin S., Lad P., Morgenroth J., Dickinson Y. and Meason DF. (2023) Uncertainty in primary and secondary topographic attributes caused by digital elevation model spatial resolution. Catena 231 http://dx.doi.org/10.1016/j.catena.2023.107320.

Zhao H., Morgenroth J., Pearse G. and Schindler J. (2023) A Systematic Review of Individual Tree Crown Detection and Delineation with Convolutional Neural Networks (CNN). Current Forestry Reports http://dx.doi.org/10.1007/s40725-023-00184-3.

Lipwoni V., Watt MS., Hartley RJL., Leonardo EMC. and Morgenroth J. (2022) A comparison of photogrammetric software for deriving structure-from-motion 3D point clouds and estimating tree heights. New Zealand Journal of Forestry 66(4): 18-26.

Ye N., Morgenroth J., Xu C. and Cai Z. (2022) Improving neural network classification of indigenous forest in New Zealand with phenological features. Journal of Environmental Management 314 http://dx.doi.org/10.1016/j.jenvman.2022.115134.

Manley B., Morgenroth J. and Xu C. (2021) Map of the small-scale forest estate of New Zealand. New Zealand Journal of Forestry 66(1): 33-37.

Salekin S., Bloomberg M., Morgenroth J., Meason DF. and Mason EG. (2021) Within-site drivers for soil nutrient variability in plantation forests: A case study from dry sub-humid New Zealand. Catena 200 http://dx.doi.org/10.1016/j.catena.2021.105149.

Salekin S., Catalán CH., Boczniewicz D., Phiri D., Morgenroth J., Meason DF. and Mason EG. (2021) Global tree taper modelling: A review of applications, methods, functions, and their parameters. Forests 12(7) http://dx.doi.org/10.3390/f12070913.

Salekin S., Mason EG., Morgenroth J., Bloomberg M. and Meason DF. (2021) Hybrid height growth and survival model for juvenile Eucalyptus globoidea (Blakely) and E. bosistoana (F. Muell) in New Zealand. Forest Ecology and Management 490 http://dx.doi.org/10.1016/j.foreco.2021.119074.

Ye N., Morgenroth J., Xu C. and Chen N. (2021) Indigenous forest classification in New Zealand – A comparison of classifiers and sensors. International Journal of Applied Earth Observation and Geoinformation 102 http://dx.doi.org/10.1016/j.jag.2021.102395.

de Gouw S., Morgenroth J. and Xu C. (2020) An updated survey on the use of geospatial technologies in New Zealand’s plantation forestry sector. New Zealand Journal of Forestry Science 50 8 http://dx.doi.org/10.33494/nzjfs502020x118x.

Le TS. and Morgenroth J. (2020) Strategic expansion of existing forest monitoring plots: a case study using a stratified GIS-based modelling approach. New Zealand Journal of Forestry Science 50 http://dx.doi.org/10.33494/nzjfs502020x41x.

Manley B., Morgenroth J. and Xu C. (2020) Quantifying the area of the small-scale owners’ forest estate in the East Coast, Hawke’s Bay and Southern North Island. New Zealand Journal of Forestry 64(4): 18-26.

Salekin S., Mason E., Morgenroth J. and Meason DF. (2020) A preliminary growth and yield model for Eucalyptus globoidea Blakely plantations in New Zealand. New Zealand Journal of Forestry Science 50 http://dx.doi.org/10.33494/nzjfs502020x55x.

Dash JP., Watt MS., Paul TSH., Morgenroth J. and Hartley R. (2019) Taking a closer look at invasive alien plant research: A review of the current state, opportunities, and future directions for UAVs. Methods in Ecology and Evolution 10(12): 2020-2033. http://dx.doi.org/10.1111/2041-210X.13296.

Dash JP., Watt MS., Paul TSH., Morgenroth J. and Pearse GD. (2019) Early Detection of Invasive Exotic Trees Using UAV and Manned Aircraft Multispectral and LiDAR Data. Remote Sensing 11(15) 1812: 21. http://dx.doi.org/10.3390/rs11151812.

Guo T., Morgenroth J. and Conway T. (2019) To plant, remove, or retain: Understanding property owner decisions about trees during redevelopment. Landscape and Urban Planning 190 http://dx.doi.org/10.1016/j.landurbplan.2019.103601.

Guo T., Morgenroth J., Conway T. and Xu C. (2019) City-wide canopy cover decline due to residential property redevelopment in Christchurch, New Zealand. Science of the Total Environment 681: 202-210. http://dx.doi.org/10.1016/j.scitotenv.2019.05.122.

Phiri D., Morgenroth J. and Xu C. (2019) Four decades of land cover and forest connectivity study in Zambia-An object-based image analysis approach. International Journal of Applied Earth Observation and Geoinformation 79: 97-109. http://dx.doi.org/10.1016/j.jag.2019.03.001.

Phiri D., Morgenroth J. and Xu C. (2019) Long-term land cover change in Zambia: An assessment of driving factors. Science of the Total Environment 697 http://dx.doi.org/10.1016/j.scitotenv.2019.134206.

Salekin S., Mason EG., Morgenroth J., Bloomberg M. and Meason DF. (2019) Modelling the effect of microsite influences on the growth and survival of juvenile Eucalyptus globoidea (Blakely) and Eucalyptus bosistoana (F. Muell) in New Zealand. Forests 10(10) http://dx.doi.org/10.3390/f10100857.

Xu C., Manley B. and Morgenroth J. (2019) Describing area and yield for small-scale plantation forests in Wairarapa region of New Zealand using RapidEye and LiDAR. The New Zealand Journal of Forestry Science 49 http://dx.doi.org/10.33494/nzjfs492019x16x.

Xu C., Manley B. and Morgenroth J. (2019) Describing area and yield for small-scale plantation forests in Wairarapa region of New Zealand using RapidEye and LiDAR. The New Zealand Journal of Forestry Science 49 http://dx.doi.org/10.33494/nzjfs492019x16x.

Guo T., Morgenroth J. and Conway T. (2018) Redeveloping the urban forest: The effect of redevelopment and property-scale variables on tree removal and retention. Urban Forestry and Urban Greening 35: 192-201. http://dx.doi.org/10.1016/j.ufug.2018.08.012.

Phiri D., Morgenroth JA., Xu C. and Hermosilla T. (2018) Effects of pre-processing methods on Landsat OLI-8 land cover classification using OBIA and random forests classifier. International Journal of Applied Earth Observation and Geoinformation 73: 170-178. http://dx.doi.org/10.1016/j.jag.2018.06.014.

Salekin S., Burgess JH., Morgenroth J., Mason EG. and Meason DF. (2018) A comparative study of three non-geostatistical methods for optimising digital elevation model interpolation. ISPRS International Journal of Geo-Information 7(8) http://dx.doi.org/10.3390/ijgi7080300.

Xu C., Manley B. and Morgenroth JA. (2018) Evaluation of modelling approaches in predicting forest volume and stand age for small-scale plantation forests in New Zealand with RapidEye and LiDAR. International Journal of Applied Earth Observation and Geoinformation 73: 386-396. http://dx.doi.org/10.1016/j.jag.2018.06.021.

Gomez C., Kataoka K., Saputra A., Wassmer P., Urabe A., Morgenroth JA. and Kato A. (2017) Photogrammetry-based Texture Analysis of a Volcaniclastic Outcrop-peel: Low-cost Alternative to TLS and Automation Potentialities using Haar Wavelet and Spatial-Analysis Algorithms. Forum Geografi 31(1) http://dx.doi.org/10.23917/forgeo.v31i1.3977.

Manley B., Morgenroth J., Visser R. and Final year BForSc students. (2017) Quantifying the small-scale owners' estate in Canterbury, Otago and Southland. New Zealand Journal of Forestry 62(3): 24-32.

Mason EG. and Morgenroth J. (2017) Potential for forestry on highly erodible land in New Zealand. New Zealand Journal of Forestry 62(1): 8-15.

Mason EG., Salekin S. and Morgenroth J. (2017) Comparison between meteorological data from the New Zealand National Institute of Water and Atmospheric Research (NIWA) and data from independent meteorological stations. New Zealand Journal of Forestry Science 47(7) http://dx.doi.org/10.1186/s40490-017-0088-0.

Pearse GD., Morgenroth JA., Watt MS. and Dash JP. (2017) Optimising prediction of forest leaf area index from discrete airborne lidar. Remote Sensing of Environment 200: 220-239. http://dx.doi.org/10.1016/j.rse.2017.08.002.

Phiri D. and Morgenroth J. (2017) Developments in Landsat Land Cover Classification Methods: A Review. Remote Sensing 9(9) 967: 25. http://dx.doi.org/10.3390/rs9090967.

Xu C., Morgenroth JA. and Manley B. (2017) Mapping Net Stocked Plantation Area for Small-Scale Forests in New Zealand Using Integrated RapidEye and LiDAR Sensors. Forests 8(12): 487-487. http://dx.doi.org/10.3390/f8120487.

Morgenroth J., Hughes MW. and Cubrinovski M. (2016) Object-based image analysis for mapping earthquake-induced liquefaction ejecta in Christchurch, New Zealand. Natural Hazards 82(2): 763-775. http://dx.doi.org/10.1007/s11069-016-2217-0.

Olivera A., Visser R., Acuna M. and Morgenroth J. (2016) Automatic GNSS-enabled harvester data collection as a tool to evaluate factors affecting harvester productivity in a Eucalyptus spp. harvesting operation in Uruguay. International Journal of Forest Engineering (early access online) http://dx.doi.org/10.1080/14942119.2015.1099775.

Pearse GD., Watt MS. and Morgenroth J. (2016) Comparison of optical LAI measurements under diffuse and clear skies after correcting for scattered radiation. Agricultural and Forest Meteorology 221: 61-70. http://dx.doi.org/10.1016/j.agrformet.2016.02.001.

Manley B., Morgenroth J., Visser R. and Final year BForSc students of 2014. (2015) What proportion of the small-scale owners' estate in the North Island is likely to be harvested? New Zealand Journal of Forestry 60(3): 26-34.

Miller J., Morgenroth J. and Gomez C. (2015) 3D modelling of individual trees using a handheld camera: Accuracy of height, diameter and volume estimates. Urban Forestry & Urban Greening 14(4): 932-940. http://dx.doi.org/10.1016/j.ufug.2015.09.001.

Pont D., Kimberley M., Brownlie R., Morgenroth J. and Watt MS. (2015) Tree counts from airborne LiDAR. New Zealand Journal of Forestry 60(1): 38-43.

Xu C., Morgenroth J. and Manley B. (2015) Integrating Data from Discrete Return Airborne LiDAR and Optical Sensors to Enhance the Accuracy of Forest Description: A Review. Current Forestry Reports 1(3): 206-219. http://dx.doi.org/10.1007/s40725-015-0019-3.

Morgenroth J. and Gomez C. (2014) Assessment of tree structure using a 3D image analysis technique - a proof of concept. Urban Forestry and Urban Greening 13(1): 198-203. http://dx.doi.org/10.1016/j.ufug.2013.10.005.

Morgenroth J. and Visser RJM. (2013) Uptake and barriers to the use of geospatial technologies in forest management. New Zealand Journal of Forestry Science 43: 16. http://dx.doi.org/10.1186/1179-5395-43-16.

Park D., Manley B., Morgenroth J. and Visser R. (2012) What proportion of the forest of small-scale owners is likely to be harvested: A Whanganui case study. New Zealand Journal of Forestry 57(3): 4-11.