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| 1 | Estimating the Forest Above-ground Biomass Based on Extracted LiDAR Metrics and Predicted Diameter at Breast Height显示文摘Reliable and prompt information on forest above-ground biomass(AGB)and tree diameter at breast height(DBH)are crucial for sustainable forest management.Remote sensing technology,especially the Light Detection and Ranging(LiDAR)technology,has been proven to estimate important tree variables effectively.This study proposes predicting DBH and AGB from tree height and other LiDAR data extracted metrics.In the suggested DBH prediction,we developed a nonlinear estimation equation using the total tree height.As for the AGB prediction approach,we used regression methods such as multiple linear regression(MLR),random forest(RF)and support vector machine for regression(SVR).We conducted the study for the Gudao forest area dominated by Robinia Pseudoacacia trees,located in the Yellow River Delta(YRD),China.For our developed approaches,we used Unmanned Aerial Vehicle(UAV)and Backpack LiDAR point cloud datasets obtained in June 2017,and three field data measurements gathered in June 2017 and 2019 and October 2019,all from the same study area.The results demonstrate that:①The LiDAR data individual tree segmentation(ITS)from which we extracted individual tree information like tree location and tree height,was carried out with an overall accuracy F=0.91;②We used the ITS height data from the field stand in 2019 as a fit and developed a nonlinear DBH estimation equation with Root Mean Square Error(RMSE)=3.61 cm,later validated by the 2017 dataset;③Forest AGB at stand level was estimated with the MLR,RF and also SVR regression methods,and results show that the SVR method gave higher accuracy with R2=0.82 compared to the R2=0.72 of RF and the R2=0.70 of the MLR.Calculated AGB at plot level using the 2017 LiDAR data was used to validate both models’accuracy.Combining the UAV LiDAR data and the Backpack LiDAR significantly improved the overall ITS.The UAV LiDAR ability to provide high accuracy tree height abstraction,the DBH of the regression equation and other extracted LiDAR metrics showed high accuracy in estimating the forest AGB.This study shows that being cost-free is not the only advantage of free available software.In the performance of ITS and the LiDAR,metrics extraction proved to be as good as the commercially available software. | Petar DONEV Hong WANG Shuhong QIN Pengyu MENG Jinbo LU | 2021 | Journal of Geodesy and Geoinformation Science2021，4，3： | 2 |
| 2 | Reversible ocular toxicity related to tamoxifen therapy显示文摘 | Donev I Tiwari RP | 1988 | Cancer1988，61，： | 1 |
| 3 | Complement in cancer and cancerimmunotherapy 显示文摘 | Kolev M Towner L Donev R | 2011 | Arch Immunol Ther Exp (Warsz)2011，59，6： | 1 |
| 4 | Transient PI3K inhibition induces apoptosis and overcomes HGF-mediated resistance to EGFR-TKIs in EGFR mutant lung eancer显示文摘 | Donev IS Wei W Tadaaki Y | 2011 | Clin Cancer Res2011，17，8： | 1 |
| 5 | Modulation of CD59 expression by restrictive silencer factor-derived peptides in cancer immunotherapy for ncuroblastoma 显示文摘 | Donev RM Gray LC Sivasankar B | 2008 | Cancer Res2008，68，14： | 1 |
| 6 | Absorption and quasi guided mode analysis of organic solar cells with photonic crystal photoactive layers 显示文摘 | DONEV E U LOPEZ R FELDMAN L C | 2009 | Nano Lett2009，9，2： | 1 |
| 7 | Size effects in the structural phase transition of V02 nanoparticles studied by surface-enhanced raman scattering 显示文摘 | DONEV E U ZIEGLER J I HAGLUND R F | 2009 | J Opt A: Pure Appl Opt2009，11，12： | 1 |
| 8 | The impact of Le Fort I advancement and bilateral sagittal split osteotomy set- back on ventilation during sleep显示文摘 | Foltztn R Hoffmannova J Donev F | 2009 | Int J Oral Maxillofacal Surg2009，38，10： | 1 |
| 9 | Liposarcoma of the Spermatic Cord:A Case Report显示文摘 | Papageoriou MS Dadakas G Donev K | | 0，，： | 1 |
| 10 | Jamming in hard sphere and disk packing显示文摘 | TORQUATO S STILLINGER F H | 2004 | J Appl Phys2004，95，3： | 1 |
| 11 | CD59a deficient mice display reduced B cell activity and antibody production in response to T-dependent antigens显示文摘 | SIVASANKAR B DONEV R M LONGHI M P | 2007 | Mol Immunol2007，44，11： | 1 |
| 12 | Pair correlation function characteristics of nearly jammed disordered and ordered hard-sphere packings显示文摘 | TORQUATO S STILLINGER F H | 2005 | Phys Rev E2005，71，1： | 1 |
| 13 | Neighbor list collision-driven molecular dynamics simulation for nonsphericalhard particles: I algorithmic details显示文摘 | Donev A Torquato S Stillinger F H | 2005 | Journal of Computa-tional Physics2005，202，2： | 1 |
| 14 | Neighbor list collision-driven molecular dynamics simulation for nonsphericalhard particles: II applications to ellipses and ellipsoids显示文摘 | Donev A Torquato S Stillinger F H | 2005 | Journal of Computational Physics2005，202，2： | 1 |
| 15 | Complement in cancer and cancer immunotherapy显示文摘 | Kolev M Towner L Donev R | 2011 | Arch Immunol2011，59，6： | 1 |
| 16 | The impact of Le Fort I advancement and bilateral sagitta/split osteotomy setback on ventila- tion during sleep 显示文摘 | Foltdn R Hoffmannovd J Donev F | 2009 | Int J Oral Maxillofac Surg2009，38，10： | 1 |
| 17 | Transient PI3K inhibition induces apoptosis and overcomes HGF-mediated resistance to EG- FR-TKIs in EGFR mutant lung cancer 显示文摘 | Donev IS Wang W Yamada T | 2011 | Clin Cancer Res2011，17，8： | 1 |
| 18 | Improving the density of jammed disordered packings using ellipsoids显示文摘 | CISSE I SACHS D | 2004 | Science2004，303，5660： | 1 |
| 19 | The D-optimal design of blocked and split-plot experiments with mixture components显示文摘 | Goos P Donev A N | 2006 | Journal of Quality Technology2006，38，3： | 1 |
| 20 | Catalyticand Biocatalytic Oxidation of Glucose to GluconicAcid in Amodified Three Phase Reactor显示文摘 | DONEVA T VASSILIEFF C Donev R | 1999 | Biotech-nology Lett1999，21，： | 1 |
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