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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 | Spatio-temporal Variability of Soil Water at Three Seasonal Floodplain Sites: A Case Study in Tarim Basin,Northwest China显示文摘The floodplain vegetation of the Tarim River in Northwest China is strongly influenced by irrigated agriculture. The abstraction of river water disturbs the natural dynamics of the floodplain ecosystem. The human impact on the hydrological system by bank dams and the irrigation of cotton plantings have caused adverse changes of the Tarim River and its floodplains, so the current stocks of the typical Tugai vegetation show significant signs of degradation. Field studies of soils and statistical analysis of soil moisture data have shown that the vitality of the Tugai vegetation is primarily determined by its position to the riverbank and the groundwater. There exist complex interactions between soil hydrological conditions and the vitality of the vegetation. But the availability of water is not only influenced by the groundwater level and seasonal flood events. The spatial distribution of stocks at different states of vitality seems also to be decisively influenced by physical soil properties. Our results show that the water supply of plant communities is strongly influenced by the soil texture. Spatial differences of soil moisture and corresponding soil water tensions may be the decisive factors for the zonation of vegetation. Physical soil properties control the water retention and rising of capillary water from deeper soil layers and the phreatic zone and may supply the root systems of the phreatophytic vegetation with water. | Sven GRASHEY-JANSEN Martin KUBA Bernd CYFFKA müt HALIK Tayierjiang AISHAN | 2014 | Chinese Geographical Science2014，24，6： | 3 |
| 3 | Antisense therapy in oncology:new hope for an old idea显示文摘 | INGO T BERND D GUNTHER H | 2001 | Lancet2001，358，9280： | 1 |
| 4 | In vitro and in vivo studies on blends of isotactic and atactic poly (3-hydroxybutyrate) for development of a dura substitute material显示文摘 | Kunze C Edgar Bernd H Androsch R Nischan C Freier T Kramer S | 2006 | Biomaterials2006，27，： | 1 |
| 5 | A thermal model for high speed motorized spindles显示文摘 | JAY F T | 1999 | International Journal of Machine Tools & Manufacture1999，39，： | 1 |
| 6 | The feasibility of largescale lignocellulose-based bioenergy production 显示文摘 | Berndes G Azar C Kaberger T | 2001 | Biomass Bioenerg2001，20，： | 1 |
| 7 | Biomass burning-a review of organic tracers for smoke from incomplete combustion 显示文摘 | Simoneit Bernd R T | 2002 | Applied Geochemistry2002，17，3： | 1 |
| 8 | Supercritical fluid extracts from brown coal lithotypes and their group components-molecular composition of non-polar compounds显示文摘 | Franciszek Czechowski Marek Stolarski Bernd R T Simoneit | 2002 | Fuel2002，81，： | 1 |
| 9 | Topoisomerase degradation,DSB repair,p53 and IAPs in cancer cell resistance to camptothecin-like topoisomerase Ⅰ inhibitors显示文摘 | Tomicic M T Bernd K B | 2013 | Biochimica et Biophysica Acta2013，1835，： | 1 |
| 10 | A review of current applications of mass spectrometry for biomarker/ molecular tracer elucidations显示文摘 | SIMONEIT BERND R T | 2005 | Mass Spectrom Rev2005，24，5： | 1 |
| 11 | New chemical tools for investigating human mitotic kinesin Eg5显示文摘 | Emmanuel K Salvatore D Bernd T | 2007 | Bioorganic & Medicinal ChemistD2007，15，： | 1 |
| 12 | Physicochemical structural characterization of ambers from deposits in Poland显示文摘 | Franciszek Czechowski Bernd R T Simoneit Michat Sachanbinski | 1996 | Applied Gcochemistry1996，11，6： | 1 |
| 13 | Antisense therapy in oncology: new hope for an old idea显示文摘 | Ingo T Bernd D Gunther H | 2001 | Lancet2001，358，： | 1 |
| 14 | A thermal model for high speed motorized spindles 显示文摘 | Bernd B Jay F T | 1999 | International Journal Machine Tools & Manufacture1999，9，39： | 1 |
| 15 | Molybdenite Re -Os and Albite 40 Ar/39 Ar Dating of Cu - Au - Mo andMagnetite Porphyry Systems in the Yangtze RiverValley and Metalogenic Implications显示文摘 | Mao J W Wang Y T Bernd L | 2006 | Ore GeologyReviews?2006，29，： | 1 |
| 16 | Analysis of sugars in environ- mental samples by gas chromatography - mass spectrometry 显示文摘 | Patricia M M Bernd R T S | 2007 | Journal of Chromatography A2007，1141，2： | 1 |
| 17 | Local and remote visualization techniques for interactive direct volume rendering in neuroradiology显示文摘 | Bernd F T Peter H Christof R S | 2001 | RadioGraphics2001，21，6： | 1 |
| 18 | Gas Chromatography Coupled to Mass Spectrometry for Analyses of Organic Compounds and Biomarkers as Tracers for Geological,Environmental,and Forensic Research显示文摘 | Patricia M M Bernd R T | 2007 | Journal of Gas Chromatography2007，30，： | 1 |
| 19 | Thermal spray processing of nanoscale materials extended abstracts显示文摘 | BERND T C | | Therm Spray Technol0，7，3： | 1 |
| 20 | Phe-nylnaphthalenes and polyphenyls in Palaeozoic source rocks ofthe Holy Cross Moimtains,Poland显示文摘 | Leszek Marynowski Franciszek Czechowski Bernd R T | 2001 | Organic Geochemis-try2001，32，1： | 1 |
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