@article{jiang_yu_mickler_tang_liang_zhang_song_wang_2023, title={Forest Phenology under Differing Topographic Conditions: A Case Study of Changbai Mountain in Northeast China}, volume={14}, ISSN={["1999-4907"]}, DOI={10.3390/f14071466}, abstractNote={Forest phenology is sensitive to climate change, and its responses affect many land surface processes, resulting in a feedback effect on climate change. Human activities have been the main driver of climate change’s long-term shifts in temperature and weather patterns. Forest phenology, understood as the timing of the annual cycles of plants, is extremely sensitive to changes in climate. Quantifying the responses of temperate forest phenology under an elevational range of topographic conditions that mimic climate change is essential for making effective adaptive forest ecosystem management decisions. Our study utilized the Google Earth Engine (GEE), gap filling, and the Savitzky–Golay (GF-SG) algorithm to develop a long-time series spatio-temporal remote sensing data fusion. The forest phenology characteristics on the north slope of Changbai Mountain were extracted and analyzed annually from 2013 to 2022. Our study found that the average start of the growing season (SOS) on the north slope of Changbai Mountain occurred between the 120th–150th day during the study period. The end of the growing season (EOS) occurred between the 270th–300th day, and the length of the growing season (LOS) ranged from the 110th–190th day. A transect from the northeast to southwest of the study area for a 10-year study period found that SOS was delayed by 39 d, the EOS advanced by 32 d, and the LOS was gradually shortened by 63 d. The forest phenology on the north slope of Changbai Mountain showed significant topographic differentiations. With an increase of 100 m in altitude, the mean SOS was delayed by 1.71 d (R2 = 0.93, p < 0.01). There were no obvious trends in EOS variation within the study area altitude gradient. LOS decreased by 1.23 d for each 100 m increase in elevation (R2 = 0.90, p < 0.01). Forests on steep slopes had an earlier SOS, a later EOS, and a longer LOS than forests on gentle slopes. For each degree increase in slope, SOS advanced by 0.12 d (R2 = 0.53, p = 0.04), EOS was delayed by 0.18 d (R2 = 0.82, p = 0.002), and the LOS increased by 0.28 d (R2 = 0.78, p = 0.004). The slope aspect had effects on the EOS and the LOS but had no effect on the SOS. The forest EOS of the south aspect was 3.15 d later than that of the north aspect, and the LOS was 6.47 d longer. Over the 10-year study period, the phenology differences between the north and south aspects showed that the LOS difference decreased by 0.85 d, the SOS difference decreased by 0.34 d, and the EOS difference decreased by 0.53 d per year. Our study illustrates the significance of the coupling mechanism between mountain topography and forest phenology, which will assist our future understanding of the response of mountain forest phenology to climate change, and provide a scientific basis for further research on temperate forest phenology.}, number={7}, journal={FORESTS}, author={Jiang, Jie and Yu, Quanzhou and Mickler, Robert A. A. and Tang, Qingxin and Liang, Tianquan and Zhang, Hongli and Song, Kaishan and Wang, Shaoqiang}, year={2023}, month={Jul} } @article{jiang_turnbull_lu_boguslawski_bernholc_2012, title={Theory of nitrogen doping of carbon nanoribbons: Edge effects}, volume={136}, number={1}, journal={Journal of Chemical Physics}, author={Jiang, J. and Turnbull, J. and Lu, W. C. and Boguslawski, P. and Bernholc, J.}, year={2012} } @article{jiang_lu_bernholc_2008, title={Edge States and Optical Transition Energies in Carbon Nanoribbons}, volume={101}, ISSN={0031-9007 1079-7114}, url={http://dx.doi.org/10.1103/PhysRevLett.101.246803}, DOI={10.1103/physrevlett.101.246803}, abstractNote={The edge states and optical transition energies in carbon nanoribbons are investigated with density-functional calculations. While the ground state of zigzag ribbons is spin polarized, defects at the edges destroy spin polarization and lead to a nonmagnetic ground state. Scanning tunneling spectroscopy will thus show different features depending on edge quality. Optical transition energies in nanoribbons Eii are strongly affected by the edges and confinement, which introduce a term inversely proportional to their width. After removing that term, the scaling of Eii is quantitatively similar to that in carbon nanotubes.}, number={24}, journal={Physical Review Letters}, publisher={American Physical Society (APS)}, author={Jiang, J. and Lu, W. and Bernholc, J.}, year={2008}, month={Dec} } @misc{saito_fantini_jiang_2008, title={Excitonic states and resonance Raman Spectroscopy of single-wall carbon nanotubes}, volume={111}, journal={Carbon nanotubes}, author={Saito, R. and Fantini, C. and Jiang, J.}, year={2008}, pages={251–286} } @misc{roche_jiang_torres_saito_2007, title={Charge transport in carbon nanotubes: quantum effects of electron-phonon coupling}, volume={19}, number={18}, journal={Journal of Physics. Condensed Matter}, author={Roche, S. and Jiang, J. and Torres, Luis E. F. Foa and Saito, R.}, year={2007} } @article{sato_saito_jiang_dresselhaus_dresselhaus_2007, title={Chirality dependence of many body effects of single wall carbon nanotubes}, volume={45}, ISSN={["0924-2031"]}, DOI={10.1016/j.vibspec.2007.05.001}, abstractNote={The higher lying exciton energies (E33S and E44S) of single wall carbon nanotubes (SWNTs) are calculated by solving the Bethe–Salpeter equation within an extended tight binding method. For E11S and E22S transitions, the chirality dependence of the exciton binding energy for each (n,m) SWNT is almost cancelled by that of the self energy. Thus the origin of the family pattern for E11S and E22S can be understood by the chirality dependence of the single particle energies. However, for E33S and E44S transitions, since the self energy becomes larger than the exciton binding energy, the chirality dependence of many body effects becomes important to analyze the transition energies.}, number={2}, journal={VIBRATIONAL SPECTROSCOPY}, author={Sato, K. and Saito, R. and Jiang, J. and Dresselhaus, G. and Dresselhaus, M. S.}, year={2007}, month={Nov}, pages={89–94} } @article{sato_saito_jiang_dresselhaus_dresselhaus_2007, title={Discontinuity in the family pattern of single-wall carbon nanotubes}, volume={76}, ISSN={["2469-9969"]}, DOI={10.1103/physrevb.76.195446}, abstractNote={The higher lying bright exciton energies $({E}_{11}^{M},{E}_{33}^{S},{E}_{44}^{S},{E}_{22}^{M},{E}_{55}^{S},{E}_{66}^{S},{E}_{33}^{M})$ of single-wall carbon nanotubes are calculated by solving the Bethe-Salpeter equation within an extended tight binding method. For smaller diameter nanotubes, some higher ${E}_{ii}$ excitonic states are missing. In particular, some ${E}_{ii}$'s on the one-dimensional Brillouin zone (cutting line) are no longer relevant to the formation of excitons and are skipped in listing the order of the ${E}_{ii}$ values. Thus the family patterns show some discontinuities in $k$ space and this effect should be observable in Raman ${G}^{\ensuremath{'}}$ band spectroscopy. The higher exciton energies ${E}_{33}^{S}$ and ${E}_{44}^{S}$ have a large chirality dependence due to many body effects, since the self-energy becomes larger than the binding energy. Thus the chirality dependence of the higher ${E}_{ii}$ comes not only from a single particle energy but also from many-body effects.}, number={19}, journal={PHYSICAL REVIEW B}, author={Sato, K. and Saito, R. and Jiang, J. and Dresselhaus, G. and Dresselhaus, M. S.}, year={2007}, month={Nov} } @article{sasaki_jiang_saito_onari_tanaka_2007, title={Theory of superconductivity of carbon nanotubes and graphene}, volume={76}, number={3}, journal={Journal of the Physical Society of Japan}, author={Sasaki, K. and Jiang, J. and Saito, R. and Onari, S. and Tanaka, Y.}, year={2007} }