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| 1 | Tree-ring based PDSI reconstruction since AD 1842 in the Ortindag Sand Land,east Inner Mongolia显示文摘epartment of Wood Science, University of Hamburg, Hamburg D-21031, GermanyBased on three Chinese pine (Pinus tabulaeformis Carr.) and one Meyer spruce (Picea meyeri Rehd. et Wils.) ring-width chronologies, a 163-year drought history was reconstructed in the eastern Ortindag Sand Land. All tree-ring chronologies show large inter-annual variations and strong common signals and fairly consistent variation between different chronologies, indicating that they are excellent proxy of regional climate. A regional chronology (RC) was established by averaging the four standard chronologies and further employed for the analysis and climatic reconstruction. The analysis revealed that tree growth is primarily limited by low precipitation in February-March and June-July and high temperature in May-July. In addition, RC has high correlations with the monthly Palmer drought severity index (PDSI) prior to and during the growing season because the PDSI considers the accumulation of the droughts. Response function analysis revealed that RC only exhibits significant correlations with the PDSI in June and July (close to the 95% significance level in May). Because May―July is a critical period for tree growth, the average May-July PDSI (PDSI5-7) was reconstructed back to 1842 using RC in the Ortindag Sand Land. The reconstruction can explain 52% of the PDSI variance and the equation was rather stable over time. It agrees well with the variation of the average dryness/wetness indices in North China,and captures the decline process of the East Asian summer monsoon since the mid-1960s. It is worth noting that the Ortindag Sand Land has experienced the most severe drought in the recent 40 years based on the 163-year drought reconstruction. Like summer precipitation in North China the reconstructed PDSI5-7 also displays a 20-year oscillation. | LIANG ErYuan SHAO XueMei LIU HongYan ECKSTEIN Dieter | 2007 | Chinese Science Bulletin2007，52，19： | 37 |
| 2 | Millennial temperature reconstruction based on tree-ring widths of Qilian juniper from Wulan,Qinghai Province,China显示文摘The climate of the past 1000 years is an important context for evaluating the recent climate warming.However,there are few 1000-year-long climate reconstructions with annual resolution in the Qing-hai-Tibet Plateau.In this paper,a dendroclimatic analysis was conducted for the radial growth of Qilian juniper from the upper forest limit in Wulan,Qinghai Province.The results of correlation analysis between the tree-ring widths and the climate variables indicate that the growth of junipers at the upper forest limit is mainly limited by low temperatures of September,November and February of the pregrowth season,and July of the current growth season.There is no significant correlation between the tree-ring widths and precipitation.A mean temperature from the previous year's September to the current year's April was reconstructed for the Wulan area since A.D.1000.The reconstruction can explain 40.8% of the instrumental variance in the calibration period(1856―2002).The reconstruction shows that the 20th century is the warmest 100 years,and the 1990s is the warmest decade during the past 1000 years,while the coldest 100 years and decade occur at 1600―1699 and 1642―1651,respectively.The variations are verified well by the temperature reconstruction of the middle Qilian Mountain(QL) and the total organic carbon(TOC) in the Qinghai Lake sediments.The comparison of our reconstruction with the annual temperature reconstruction of extra-tropical Northern Hemisphere suggests that the climate of Wulan during the Medieval Warm Period is of obvious regional specialty,but there was a good response to the climate of hemispheric scales during the recent 400 years. | ZHU HaiFeng ZHENG YongHong SHAO XueMei LIU XiaoHong XU Yan LIANG ErYuan | 2008 | Chinese Science Bulletin2008，53，24： | 40 |
| 3 | Critical minimum temperature limits xylogenesis and maintains treelines on the southeastern Tibetan Plateau显示文摘Physiological and ecological mechanisms that define treelines are still debated.It has been suggested that the absence of trees above the treeline is caused by low temperatures that limit growth.Thus,we hypothesized that there is a critical minimum temperature(CTmin) preventing xylogenesis at treeline.We tested this hypothesis by examining weekly xylogenesis across three and four growing seasons in two natural Smith fir(Abies georgei var.smithii) treeline sites on the southeastern Tibetan Plateau.Despite differences in the timing of cell differentiation among years,minimum air temperature was the dominant climatic variable associated with xylem growth;the critical minimum temperature(CTmin) for the onset and end of xylogenesis occurred at 0.7 ± 0.4 °C.A process-based modelling chronology of tree-ring formation using this CTminwas consistent with actual tree-ring data.This extremely low CTminpermits Smith fir growing at treeline to complete annual xylem production and maturation and provides both support and a mechanism for treeline formation. | Xiaoxia Li Eryuan Liang Jozica Gricar Sergio Rossi Katarina Cufar Aaron M. Ellison | 2017 | Science Bulletin2017，62，11： | 17 |
| 4 | Strong link between large tropical volcanic eruptions and severe droughts prior to monsoon in the central Himalayas revealed by tree-ring records显示文摘Large tropical volcanic eruptions can cause short-term global cooling. However, little is known whether large tropical volcanic eruptions, like the one in Tambora/Indonesia in 1815, cause regional hydroclimatic anomalies. Using a tree-ring network of precisely dated Himalayan birch in the central Himalayas, we reconstructed variations in the regional pre-monsoon precipitation back to 1650 CE. A superposed epoch analysis indicates that the pre-monsoon regional droughts are associated with large tropical volcanic eruptions, appearing to have a strong influence on hydroclimatic conditions in the central Himalayas. In fact, the most severe drought since 1650 CE occurred after the Tambora eruption. These results suggest that dry conditions prior to monsoon in the central Himalayas were associated with explosive tropical volcanism. Prolonged La Ni?a events also correspond with persistent pre-monsoon droughts in the central Himalayas. Our results provide evidence that large tropical volcanic eruptions most likely induced severe droughts prior to monsoon in the central Himalayas. | Eryuan Liang Binod Dawadi Neil Pederson Shilong Piao Haifeng Zhu Shalik Ram Sigdel Deliang Chen | 2019 | Science Bulletin2019，64，14： | 8 |
| 5 | Temperature variability in northern Iran during the past 700 years显示文摘Warming is significantly affecting ecosystems in dry-warm areas,such as the Middle East[1],but long-term climatic records are often scarce in these regions.One important proxy source of climate data is tree rings,which have contributed to understanding climate changes over the past millennium[1].Under the PAGES2K framework[2],a tree-ring network of the Eurasian continent | Vilma Bayramzadeh Haifeng Zhu Xiaoming Lu Pedram Attarod Hui Zhang Xiaoxia Li Fayaz Asad Eryuan Hang | 2018 | Science Bulletin2018，63，8： | 3 |
| 6 | Effects of genistein on vertebral trabecular bone microstructure, bone mineral density, microcracks, osteocyte density, and bone strength in ovariectomized rats显示文摘 | Ruchun Dai Yulin Ma Zhifeng Sheng Yan Jin Yuhai Zhang Lingna Fang Huijie Fan Eryuan Liao | 2008 | Journal of Bone and Mineral Metabolism2008，，4： | 1 |
| 7 | Relationships of serum lipid profiles and bone mineral density in postmenopausal Chinese women显示文摘 | Shuang Li Hongbing Guo Youshuo Liu Feng Wu Hongbing Zhang Zhimin Zhang Zhongjian Xie Zhifeng Sheng Eryuan Liao | 2015 | Clin Endocrinol2015，，1： | 1 |
| 8 | The 1920S Drought Recorded by Tree Rings and Historical Documents in the Semi-Arid and Arid Areas of Northern China显示文摘 | Eryuan Liang Xiaohong Liu Yujiang Yuan Ningsheng Qin Xiuqi Fang Lei Huang Haifeng Zhu Lily Wang Xuemei Shao | 2006 | Climatic Change (-)2006，，3： | 1 |
| 9 | Dendroclimatic evaluation of climate-growth relationships of Meyer spruce (Picea meyeri) on a sandy substrate in semi-arid grassland, north China显示文摘 | Eryuan Liang Xuemei Shao Yuxi Hu Jinxing Lin | 2001 | Trees2001，，4： | 1 |
| 10 | Growth variation in Abies georgei var. smithii along altitudinal gradients in the Sygera Mountains, southeastern Tibetan Plateau显示文摘 | Eryuan Liang Yafeng Wang Yan Xu Bo Liu Xuemei Shao | 2010 | Trees2010，，2： | 1 |
| 11 | The 1920S Drought Recorded by Tree Rings and Historical Documents in the Semi-Arid and Arid Areas of Northern China显示文摘 | Eryuan Liang Xiaohong Liu Yujiang Yuan Ningsheng Qin Xiuqi Fang Lei Huang Haifeng Zhu Lily Wang Xuemei Shao | 2006 | Climatic Change (-)2006，，3： | 1 |
| 12 | Topography- and species-dependent growth responses of Sabina przewalskii and Picea crassifolia to climate on the northeast Tibetan Plateau显示文摘 | Eryuan Liang Xuemei Shao Dieter Eckstein Lei Huang Xiaohong Liu | 2006 | Forest Ecology and Management2006，，2： | 1 |
| 13 | Bone mineral density differences at the femoral neck and ward triangle:a comparison study on the reference data between Chinese and Caucasian womman显示文摘 | Xiaoge D Eryuan L Xianping W | 2000 | Calcif Tissue Int2000，67，： | 1 |
| 14 | Dendroclimatic e- valuation of climate-growth relationships of Meyer spruce ( Picea meyeri) on a sandy substrate in semi-arid grassland, north China 显示文摘 | Liang Eryuan Shao Xuemei Hu Yuxi | 2001 | Trees2001，15，4： | 1 |
| 15 | Establishment of OPG Transgenic Mice and the Effect of OPG on Bone Microarchitecture显示文摘 | Ying Wu Jianghua Liu Hui Guo Qiong Luo Ziying Yu Eryuan Liao Xuyu Zu Guang-Da Xiang | 2013 | International Journal of Endocrinology2013，，： | 1 |
| 16 | Tree-ring based summer temperature reconstruction for the source region of the Yangtze River on the Tibetan Platea 显示文摘 | Eryuan Liang Xuemei Shao Ningsheng Qin | 2008 | Global and Planetary Change2008，61，： | 1 |
| 17 | Tree-ring based summer temperature reconstruction for the source region of the Yangtze River on the Tibetan Plateau显示文摘 | Eryuan Liang Xuemei Shao Ningsheng Qin | 2007 | Global and Planetary Change2007，，3： | 1 |
| 18 | Effects of genistein on vertebral trabecular bone microstructure, bone mineral density, microcracks, osteocyte density, and bone strength in ovariectomized rats显示文摘 | Ruchun Dai Yulin Ma Zhifeng Sheng Yan Jin Yuhai Zhang Lingna Fang Huijie Fan Eryuan Liao | 2008 | Journal of Bone and Mineral Metabolism2008，，4： | 1 |
| 19 | Wavelet Packets Analysis Based on IIR Two-channel Bi-orthogonal Filter Banks显示文摘A framework of IIR two-channel bi-orthogonal filter banks is presented. The design of the analysis/synthesis systems reduces to the design of a single transfer function. The wavelet bases corresponding to the IIR maximally flat filters are generated. Use the wavelet bases in wavelet packets analysis, take information entropy function as information cost function, adjust the best bases dynamically, and the section of signal’s spectramfits its characteristics well. A lot of audio signals are processed. Compared to that of the wavelet transform and the wavelet packet transform using the Daubechies’ wavelet which has the same order with our IIR wavelet, the properties of our system are | Yan Guixia and Zhao Eryuan (Institute of Telecommunication Engineering, Beijing University of Posts and Telecomm., Beijing, 100876.P.R. China) | 1998 | The Journal of China Universities of Posts and Telecommunications1998，5，2： | 1 |
| 20 | Dendroclimatic e- valuation of climate-growth relationships of Meyer spruce ( Picea meyeri) on a sandy substrate in semi-arld grassland, north China 显示文摘 | Liang Eryuan Shao Xuemei Hu Yuxi | 2001 | Trees Structure and Function2001，15，4： | 1 |
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