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| 1 | Modeling height–diameter relationship for Populus euphratica in the Tarim riparian forest ecosystem, Northwest China显示文摘Modeling height–diameter relationships is an important component in estimating and predicting forest development under different forest management scenarios. In this paper, ten widely used candidate height–diameter models were fitted to tree height and diameter at breast height(DBH)data for Populus euphratica Oliv. within a 100 ha permanent plots at Arghan Village in the lower reaches of the Tarim River, Xinjiang Uyghur Autonomous Region of China. Data from 4781 trees were used and split randomly into two sets:75 % of the data were used to estimate model parameters(model calibration), and the remaining data(25 %) were reserved for model validation. All model performances were evaluated and compared by means of multiple model performance criteria such as asymptotic t-statistics of model parameters, standardized residuals against predicted height,root mean square error(RMSE), Akaike's informationcriterion(AIC), mean prediction error(ME) and mean absolute error(MAE). The estimated parameter a for model(6) was not statistically significant at a level of a = 0.05. RMSE and AIC test result for all models showed that exponential models(1),(2),(3) and(4) performed significantly better than others. All ten models had very small MEs and MAEs. Nearly all models underestimated tree heights except for model(6). Comparing the MEs and MAEs of models, model(1) produced smaller MEs(0.0059) and MAEs(1.3754) than other models. To assess the predictive performance of models, we also calculated MEs by dividing the model validation data set into 10-cm DBH classes. This suggested that all models were likely to create higher mean prediction errors for tree DBH classes[20 cm. However, no clear trend was found among models.Model(6) generated significantly smaller mean prediction errors across all tree DBH classes. Considering all the aforementioned criteria, model(1): TH ? 1:3 t a= e1 t b?eàc?DBHT and model(6): TH ? 1:3 t DBH2= ea t b?DBH t c ? DBH2T are recommended as suitable models for describing the height–diameter relationship of P. euphratica. The limitations of other models showing poor performance in predicting tree height are discussed. We provide explanations for these shortcomings. | Tayierjiang Aishan Umüt Halik Florian Betz Philipp Gartner Bernd Cyffka | 2016 | Journal of Forestry Research2016,27,4: | 9 |
| 2 | Functional characterization of the adrenoleukodystrophy protein(ALDP)and disease pathogenesis显示文摘 | Gartner J Dehmel T Klusmann A | 2002 | Endocr Res2002,28,4: | 1 |
| 3 | Microstructural and Macroscopic Properties of Cold Sprayed Copper Coatings 显示文摘 | Borchers C Gartner F Stohenhoff T | 2003 | Journal of Applied Physicis2003,93,10: | 1 |
| 4 | Bonding mechanism in cold gas spraying显示文摘 | Assadi H Gartner F Stoltenhoff T | 2003 | Acta Materialia2003,51,: | 1 |
| 5 | Bonding Mechanism in Cold Gas Spraying显示文摘 | Assadi H Gartner F Stoltenhoff T | | 0,,: | 1 |
| 6 | Decomposition dynamics in mixed-species leaf litter显示文摘 | Gartner T B Cardon Z G | 2004 | Oikos2004,104,2: | 1 |
| 7 | Development of a generalized parameter window for cold spray deposition显示文摘 | T Schmidt F Gartner H Assadi | 2005 | Acta Mater2005,54,3: | 1 |
| 8 | Provenance and accumulation rates of opaline silica, Al, Ti, Fe, Mn, Cu, Ni, and Co in Pacific pelagic sediment 显示文摘 | Bostrom K Kracer T Gartner S | 1973 | Chemical Geology1973,11,12: | 1 |
| 9 | Microstructural Bonding Features of Cold Sprayed Face Centered Cubic Metals 显示文摘 | Borchers C Gartner F Stohenhoff T | 2004 | Journal of Applied Physics2004,96,8: | 1 |
| 10 | Estimates of bottom rough- ness length and bottom shear stress in South San Francisco Bay Cali- fornia显示文摘 | Ralph T C Ling C H Gartner J W | 1999 | Journal of Geophysical Research1999,104,7: | 1 |
| 11 | Provenance and accumulation rates of opaline silica, Ti, Fe, Mn, Cu, Ni, and Co in Pacific pelagic sediments 显示文摘 | Bostrom K Kraaemer T Gartner S | 1973 | Chemical Geology1973,11,2: | 1 |
| 12 | Tidal, Residual, Intertidal Mudflat (TRIM) model and its applications to San Francisco Bay 显示文摘 | Chang R T Casulli V Gartner J W | 1993 | California Estuarine Coastal Shelf Science1993,36,: | 1 |
| 13 | Microstructural and macroscopic properties of cold sprayed copper coatings 显示文摘 | Gartner F Stoltenhoff T | 2003 | Journal of Applied Physics2003,93,10: | 1 |
| 14 | Bonding Mechanism in Cold Gas Spraying 显示文摘 | Assadi H Gartner F Stoltenhoff T | 2003 | Acta Materialia2003,51,15: | 1 |
| 15 | Nitrogen alters carbon dy-namics during early succession in boreal forest显示文摘 | Allison S D Gartner T B Mack M C | 2010 | Soil Biology Bio-chemistry2010,42,7: | 1 |
| 16 | Decomposition dynamics in mixed- species leaf litter显示文摘 | Gartner T B Cardon Z G | 2004 | Oikos2004,104,2: | 1 |
| 17 | A newly identified RET proto-oncogene polymorphism is found in a high number of endocrine tumor patients 显示文摘 | Gartner W Mineva I Daneva T | 2005 | Hum Genet2005,117,23: | 1 |
| 18 | Bonding mechanism in cold gas spraying 显示文摘 | Gartner F Stoltenhoff T | 2003 | Acta Materialia2003,51,15: | 1 |
| 19 | Development of a Gen-eralized Parameter Window for Cold Spray Deposition显示文摘 | Schmidt T Gartner F Assadi H | 2005 | Ac-ta Mater2005,54,3: | 1 |
| 20 | Provenance and accumulation rates of opaline silica:A1,Fe,Ti,Mn,Cu,Ni,and Co in pacific pelagic sediment显示文摘 | Bostrom K Kraemer T Gartner Sl | 1973 | Chemical Geology1973,11,: | 1 |