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| 1 | Use of models in large-area forest surveys: comparing model-assisted, model-based and hybrid estimation显示文摘This paper focuses on the use of models for increasing the precision of estimators in large-area forest surveys.It is motivated by the increasing availability of remotely sensed data,which facilitates the development of models predicting the variables of interest in forest surveys.We present,review and compare three different estimation frameworks where models play a core role:model-assisted,model-based,and hybrid estimation.The first two are well known,whereas the third has only recently been introduced in forest surveys.Hybrid inference mixes designbased and model-based inference,since it relies on a probability sample of auxiliary data and a model predicting the target variable from the auxiliary data.We review studies on large-area forest surveys based on model-assisted,modelbased,and hybrid estimation,and discuss advantages and disadvantages of the approaches.We conclude that no general recommendations can be made about whether model-assisted,model-based,or hybrid estimation should be preferred.The choice depends on the objective of the survey and the possibilities to acquire appropriate field and remotely sensed data.We also conclude that modelling approaches can only be successfully applied for estimating target variables such as growing stock volume or biomass,which are adequately related to commonly available remotely sensed data,and thus purely field based surveys remain important for several important forest parameters. | Goran Stahl Svetlana Saarela Sebastian Schnell Soren Holm Johannes Breidenbach Sean P. Healey Paul L. Patterson Steen Magnussen Erik Naesset Ronald E. McRoberts Timothy G. Gregoire | 2016 | Forest Ecosystems2016，3，2： | 7 |
| 2 | Mapping forest age using National Forest Inventory,airborne laser scanning,and Sentinel-2 data显示文摘Background:The age of forest stands is critical information for forest management and conservation,for example for growth modelling,timing of management activities and harvesting,or decisions about protection areas.However,area-wide information about forest stand age often does not exist.In this study,we developed regression models for large-scale area-wide prediction of age in Norwegian forests.For model development we used more than 4800 plots of the Norwegian National Forest Inventory(NFI)distributed over Norway between latitudes 58°and 65°N in an 18.2 Mha study area.Predictor variables were based on airborne laser scanning(ALS),Sentinel-2,and existing public map data.We performed model validation on an independent data set consisting of 63 spruce stands with known age.Results:The best modelling strategy was to fit independent linear regression models to each observed site index(SI)level and using a SI prediction map in the application of the models.The most important predictor variable was an upper percentile of the ALS heights,and root mean squared errors(RMSEs)ranged between 3 and 31 years(6%to 26%)for SI-specific models,and 21 years(25%)on average.Mean deviance(MD)ranged between^(−1) and 3 years.The models improved with increasing SI and the RMSEs were largest for low SI stands older than 100 years.Using a mapped SI,which is required for practical applications,RMSE and MD on plot level ranged from 19 to 56 years(29%to 53%),and 5 to 37 years(5%to 31%),respectively.For the validation stands,the RMSE and MD were 12(22%)and 2 years(3%),respectively.Conclusions:Tree height estimated from airborne laser scanning and predicted site index were the most important variables in the models describing age.Overall,we obtained good results,especially for stands with high SI.The models could be considered for practical applications,although we see considerable potential for improvements if better SI maps were available. | Johannes Schumacher Marius Hauglin Rasmus Astrup Johannes Breidenbach | 2020 | Forest Ecosystems2020，7，4： | 3 |
| 3 | Comparison of estimators of variance for forest inventories with systematic sampling-results from artificial populations显示文摘Background:Large area forest inventories often use regular grids(with a single random start)of sample locations to ensure a uniform sampling intensity across the space of the surveyed populations.A design-unbiased estimator of variance does not exist for this design.Oftentimes,a quasi-default estimator applicable to simple random sampling(SRS)is used,even if it carries with it the likely risk of overestimating the variance by a practically important margin.To better exploit the precision of systematic sampling we assess the performance of five estimators of variance,including the quasi default.In this study,simulated systematic sampling was applied to artificial populations with contrasting covariance structures and with or without linear trends.We compared the results obtained with the SRS,Matern’s,successive difference replication,Ripley’s,and D’Orazio’s variance estimators.Results:The variances obtained with the four alternatives to the SRS estimator of variance were strongly correlated,and in all study settings consistently closer to the target design variance than the estimator for SRS.The latter always produced the greatest overestimation.In populations with a near zero spatial autocorrelation,all estimators,performed equally,and delivered estimates close to the actual design variance.Conclusion:Without a linear trend,the SDR and DOR estimators were best with variance estimates more narrowly distributed around the benchmark;yet in terms of the least average absolute deviation,Matern’s estimator held a narrow lead.With a strong or moderate linear trend,Matern’s estimator is choice.In large populations,and a low sampling intensity,the performance of the investigated estimators becomes more similar. | Steen Magnussen Ronald EMcRoberts Johannes Breidenbach Thomas Nord-Larsen Göran Ståhl Lutz Fehrmann Sebastian Schnell | 2020 | Forest Ecosystems2020，7，2： | 2 |
| 4 | Indibidualized long-term chemotherapy for recurrent ovarian cancer after failing high-dose treatment 显示文摘 | Breidenbach M Rrin DT Mallmann P | 1998 | Anticancer Drugs1998，9，1： | 1 |
| 5 | Quantitative culture technique an infection in complex wounds of the extremities closedwith free flaps显示文摘 | Breidenbach WC Trager S | 1995 | Plast Reconstr Surg1995，95，5： | 1 |
| 6 | Weekly carboplatin and docetaxel for locally advanced primary and recurrent cervical cancer:a phase Ⅰ study显示文摘 | Rein DT Kurbacher CM Breidenbach M | 2002 | Gynecol Oncol2002，87，1： | 1 |
| 7 | Weekly carbo-platin and docetaxel for locally advanced primary and recurrentcervical cancer:a phase I study显示文摘 | Rein D T Kurbacher C M Breidenbach M | 2002 | Gynecol Oncol2002，87，1： | 1 |
| 8 | Longitudinal height-diameter curves for Norway spruce, Scots pine and silver birch in Norway based on shape constraint additive regression models显示文摘Background: Generalized height-diameter curves based on a re-parameterized version of the Korf function for Norway spruce(Picea abies(L.) Karst.), Scots pine(Pinus sylvestris L.) and silver birch(Betula pendula Roth) in Norway are presented. The Norwegian National Forest Inventory(NFI) is used as data base for estimating the model parameters. The derived models are developed to enable spatially explicit and site sensitive tree height imputation in forest inventories as well as future tree height predictions in growth and yield scenario simulations.Methods: Generalized additive mixed models(gamm) are employed to detect and quantify potentially non-linear effects of predictor variables. In doing so the quadratic mean diameter serves as longitudinal covariate since stand age,as measured in the NFI, shows only a weak correlation with a stands developmental status in Norwegian forests.Additionally the models can be locally calibrated by predicting random effects if measured height-diameter pairs are available. Based on the model selection of non-constraint models, shape constraint additive models(scam) were fit to incorporate expert knowledge and intrinsic relationships by enforcing certain effect patterns like monotonicity.Results: Model comparisons demonstrate that the shape constraints lead to only marginal differences in statistical characteristics but ensure reasonable model predictions. Under constant constraints the developed models predict increasing tree heights with decreasing altitude, increasing soil depth and increasing competition pressure of a tree. A two-dimensional spatially structured effect of UTM-coordinates accounts for the potential effects of large scale spatially correlated covariates, which were not at our disposal. The main result of modelling the spatially structured effect is lower tree height prediction for coastal sites and with increasing latitude. The quadratic mean diameter affects both the level and the slope of the height-diameter curve and both effects are positive.Conclusions: In this investigation it is assumed that model effects in additive modelling of height-diameter curves which are unfeasible and too wiggly from an expert point of view are a result of quantitatively or qualitatively limited data bases. However, this problem can be regarded not to be specific to our investigation but more general since growth and yield data that are balanced over the whole data range with respect to all combinations of predictor variables are exceptional cases. Hence, scam may provide methodological improvements in several applications by combining the flexibility of additive models with expert knowledge. | Matthias Schmidt Johannes Breidenbach Rasmus Astrup | 2018 | Forest Ecosystems2018，5，2： | 1 |
| 9 | Medial arm flap revisited显示文摘 | ADAMSON W TERZIS J K | 1987 | Ann Plast Surg1987，18，2： | 1 |
| 10 | Genetic replacement of the adenoviros shaft fiber reduces liver tropism in ovaran cancer gene therapy显示文摘 | Breidenbach M Rein DT Wang M | 2004 | Hum Gene Ther2004，15，： | 1 |
| 11 | Reductive dechlorination of tetrachloroethene to cis-1,2-dichloroethene by a thermophilic anaerobic enrichment culture显示文摘 | Kengen SWM Breidenbach CG Felske A | | 0，，： | 1 |
| 12 | A randomized prospective study of polyglyeolic acid conduits for digital nerve reconstruction in humans 显示文摘 | Weber RA Breidenbach WC Brown RE | 2000 | Plast Reconstr Surg2000，106，5： | 1 |
| 13 | Mixed-effects models for estimating stand volume by means of small footprint airborne laser scanner data显示文摘 | BREIDENBACH J KUBLIN E MCGAUGHEY R | 2008 | The Photogrammetric Journal of Finland2008，21，1： | 1 |
| 14 | Weekly carboplatin and docetaxel for locally advanced primary and recurrent cervical cancer: a phase I study显示文摘 | Rein DT Kurbacher CM Breidenbach M | 2002 | Gynecol Oncol2002，87，1： | 1 |
| 15 | Quantitative culture technique:an infection in complex wounds of the extremities closed with free flaps 显示文摘 | BREIDENBACH WC | 1995 | Plast Reconstr Surg1995，95，： | 1 |
| 16 | Xenon purity analysis for exo-200 via mass spectrometry 显示文摘 | Dobi A Hall C Slutsky S Yen Y R Aharmin B Auger M Barbeau P S Benitez-Medina C Breidenbach M Cleveland B Conley R Cook J Cook S Counts I Craddock W Daniels T Davis C G Davis J Devoe R Dixit M Dolinski M J Donato K Fairbank Jr W Farine J Fierlinger P Franco D Giroux G Gornea R Graham K Gratta G Green C Hagemann C Hall K Hallman D Hargrove C Herrin S Hughes M Hodgson J Juget F Karelin A Kaufman L J Kuchenkov A Kumar K Leonard D S Lutter G Mackay D Maclellan R Marino M Mong B Montero Diez M Morgan P MUller A R Neilson R Odian A Oullivan K Piepke A Pocar A Prescott C Y Pushkin K Rivas A Rollin E Rowson P C Sabourov A Sinclair D Skarpaas K Stekhanov V Strickland V Swift M Twelker K Vuilleumier J L Vuilleumier J M Weber M Wichoski U Wodin J Wright J D Yang L | 2012 | Nuclear Instruments and Methods in Physics Research Section A: Accelerators Spectrometers Detectors and Associated Equipment2012，675，： | 1 |
| 17 | The WSR-88D rainfall algorithm显示文摘 | FULTON R A BREIDENBACH J P SEO D J | 1998 | Wen Forec1998，13，2： | 1 |
| 18 | Quantitation of estrogens in ground water and swine lagoon samples using solid-phase extraction, pentatluorobenzyl/trimethylsilyl derivatizations and gas chromatagraphy- negative ion chemical ionization tandem mass spectrometry显示文摘 | Fine D D Breidenbach G P Price L T | 2003 | Journal of Chromatography A2003，1017，12： | 1 |
| 19 | A fiber-modified, secretory leukoprotease inhibitor promoter-based conditionally replicating adenovirus for treatment of ovarian cancer显示文摘 | Rein DT Breidenbach M Kirby TO | 2005 | Clin Cancer Res2005，11，3： | 1 |
| 20 | Evaluation of tissue-speclfic promoters in carcinomas of the cervix uteri 显示文摘 | Rein D T Breidenbach M Nettelbeck D M | 2004 | J Gene Med2004，6，11： | 1 |
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