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| 1 | Mapping aboveground biomass and its prediction uncertainty using LiDAR and field data, accounting for tree-level allometric and LiDAR model errors显示文摘Background: The increasing availability of remotely sensed data has recently challenged the traditional way of performing forest inventories, and induced an interest in model-based inference. Like traditional design-based inference, model-based inference allows for regional estimates of totals and means, but in addition for wall-to-wall mapping of forest characteristics. Recently Light Detection and Ranging(LiDAR)-based maps of forest attributes have been developed in many countries and been well received by users due to their accurate spatial representation of forest resources. However, the correspondence between such mapping and model-based inference is seldom appreciated. In this study we applied hierarchical model-based inference to produce aboveground biomass maps as well as maps of the corresponding prediction uncertainties with the same spatial resolution. Further, an estimator of mean biomass at regional level, and its uncertainty, was developed to demonstrate how mapping and regional level assessment can be combined within the framework of model-based inference.Results: Through a new version of hierarchical model-based estimation, allowing models to be nonlinear, we accounted for uncertainties in both the individual tree-level biomass models and the models linking plot level biomass predictions with LiDAR metrics. In a 5005 km2 large study area in south-central Sweden the predicted aboveground biomass at the level of 18 m×18 m map units was found to range between 9 and 447 Mg·ha^-1. The corresponding root mean square errors ranged between 10 and 162 Mg·ha^-1. For the entire study region, the mean aboveground biomass was 55 Mg·ha^-1 and the corresponding relative root mean square error 8%. At this level 75%of the mean square error was due to the uncertainty associated with tree-level models.Conclusions: Through the proposed method it is possible to link mapping and estimation within the framework of model-based inference. Uncertainties in both tree-level biomass models and models linking plot level biomass with LiDAR data are accounted for, both for the uncertainty maps and the overall estimates. The development of hierarchical model-based inference to handle nonlinear models was an important prerequisite for the study. | Svetlana Saarela AndréWästlund Emma Holmström Alex Appiah Mensah Sören Holm Mats Nilsson Jonas Fridman Göran Ståhl | 2020 | Forest Ecosystems2020，7，3： | 3 |
| 2 | Chattering Analysis in Sliding Mode Systems with Inertial Sensors 显示文摘 | Leonid M Fridman | 2003 | International Journal of Control (S0020- 7179)2003，76，6： | 1 |
| 3 | A senescence program controlled by p53 and p16INK4a contributes to the outcome of cancer therapy显示文摘 | Schmitt CA Fridman JS Yang M | 2002 | Cell2002，109，3： | 1 |
| 4 | An epi-allelic series of p53 hypomorphs created by stable RNAi produces distinct tumor phenotypes in vivo 显示文摘 | Hemann M T Fridman J S Zilfou J T | 2003 | Nat Genet2003，33，： | 1 |
| 5 | Fetal cardiac function assessed by Doppler myocardial performance index (Tel Index) 显示文摘 | Fridman D Buyon J Kim M | 2003 | Ultrasound Obstet Gynecol2003，21，1： | 1 |
| 6 | Consumer Boycotts in the Unite States, 1970 - 1980 : Contemporary Events in Histori- cal Perspective 显示文摘 | Fridman M | 1955 | Journal of Consumer affairs1955，1，： | 1 |
| 7 | A senes- cence program controlled by p53 and p16INK4 a con- tributes to the outcome of cancer therapy显示文摘 | Schmitt C A Fridman J S Yang M | 2002 | Cell2002，109，3： | 1 |
| 8 | A synthetic pentasaccharide with GTPase activity 显示文摘 | Solomon D Fridman M Zhang J | 2001 | Org Lett2001，3，26： | 1 |
| 9 | Activation of progelatinase B (MMP-9) by gelatinase A (MMP-2) 显示文摘 | Fridman R Toth M Pena D | 1995 | Cancer Res1995，55，： | 1 |
| 10 | Optimal and robust sliding mode control for linear systems with multiple time delays in control input显示文摘 | Basin M Fridman L Rodriguez-Gonzalez J | 2003 | Asian J of Control2003，5，4： | 1 |
| 11 | Early effectof the HPV vaccination programme on cervical abnormali-ties in Victoria, Australia: an ecological study 显示文摘 | Brotherton J M Fridman M May C L ef al | 2011 | Lan-cet2011，377，9783： | 1 |
| 12 | Dissecting p53 tumor suppressor Functions in vivo 显示文摘 | Sehmitt CA Fridman JS Yang M | 2002 | Cancer Cell2002，1，33： | 1 |
| 13 | A model to predict chemotherapy-related severe or febrile neutropenia in cycle one among breast cancer and lymphoma patients 显示文摘 | Morrison VA Caggiano V Fridman M | 2004 | Proc Am Soc Clin Oncol2004，23，： | 1 |
| 14 | Acuracy of homogeneous sliding modes in the presence of fast actuators显示文摘 | Arie Levant Leonid M Fridman | 2010 | IEEE Trans on Automatic Control2010，55，3： | 1 |
| 15 | On input-to-state stability of systems with time-delay:a matrix inequalitiesapproach显示文摘 | FRIDMAN E DAMBRINE M YEGANEFAR N | 2008 | Automatica2008，，44： | 1 |
| 16 | Dissecting p53 tumor suppressorfunctions in vivo 显示文摘 | Schmitt C A Fridman J S Yang M | 2002 | Cancer Cell2002，1，3： | 1 |
| 17 | Clinical and morphological features of papillary thyroid cancer in children and adolescents in the Republic of Belarus: analysis of 936 post-Claemobyl carcinomas显示文摘 | Fridman M V Man'Kovskaia S V Kras'Ko O V | 2014 | Vopr Onkol2014，60，2： | 1 |
| 18 | Processing, shedding and endoeytosis of membrane type 1 matrix metalloproteinase (MT1 MMP)显示文摘 | Osenkowski P Toth M Fridman R | 2004 | J Cell Physiol2004，200，1： | 1 |
| 19 | Integral sliding- mode control for linear time-invariant implicit systems显示文摘 | Castanos F Hernandez D Fridman L M | 2014 | Automatica2014，50，3： | 1 |
| 20 | Identifying women most likely tobenefit from prevention strategies for postpartum hemorrhage 显示文摘 | Lu MC Korst LM Fridman M | 2009 | JPerinatol2009，29，6： | 1 |
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