A5091576706- Tree-ring climate responses
- Plant Water Relations and Carbon Dynamics
- Environmental Changes in China
- Environmental and Agricultural Sciences
- Remote Sensing and Land Use
- Climate variability and models
- Geology and Paleoclimatology Research
- Ecology and Vegetation Dynamics Studies
- Hydrology and Sediment Transport Processes
- Hydrology and Drought Analysis
- Environmental Quality and Pollution
- Hydrology and Watershed Management Studies
- Advanced Decision-Making Techniques
- Rice Cultivation and Yield Improvement
- Forest, Soil, and Plant Ecology in China
- Research studies in Vietnam
- Soil, Finite Element Methods
- Landslides and related hazards
- Climate change impacts on agriculture
- Cryospheric studies and observations
- Plant responses to water stress
China Meteorological Administration
2009-2024
National Institute of Meteorology
2010
Climate Central
2009
Sichuan University
2009
Qinghai Meteorological Bureau
2003-2007
Daily and monthly maximum minimum surface air temperatures at 66 weather stations over the eastern central Tibetan Plateau with elevations above 2000 m were analyzed for temporal trends spatial variation patterns during period 1961–2003. Statistically significant warming identified in various measures of temperature regime, such as extreme events diurnal range. The winter nighttime among highest when compared other regions. We also confirmed asymmetric pattern greater or to daytime...
Abstract Tree‐ring widths have been used widely in studies of environmental changes and reconstructions past climate. Eleven tree‐ring chronologies approximately 800–1500 years long were developed from Qilian junipers ( Sabina przewalskii Kom. ) for northeastern Qaidam Basin, along the margin Qinghai–Tibetan Plateau. Previous revealed that water usage stress is most limiting factor tree growth study region. To evaluate impact combined effects temperature precipitation over time, we performed...
Abstract Ongoing global warming has a strong influence on regional hydrological cycles. The upper reaches of the Yangtze River (UYR) are highly vulnerable to extreme droughts and floods, but lack long‐term streamflow observations limited our understanding influences. Here, we establish an annually resolved absolutely dated tree‐ring oxygen ( δ 18 O) isotope chronology use it reconstruct summer history UYR between 1260 2017. experienced 79 floods 107 over this period. We found trend toward...
It is very important that making full use of the regional precipitation resources, evaluating comprehensive risks overall and choosing drought-resisting disaster-avoiding cropping system reasonably. Based on meteorological data from 1961 to 2017 crop growth period 1981 in Sichuan Province, Province was divided into seven agro-ecological zones one non-agricultural zone according their interregional differences similarities aspects nature, social economy current agricultural infrastructures....
Abstract Global warming has a significant impact on the ecosystem of high‐altitude areas Tibetan Plateau, such as land degradation and rapid retreat glaciers. It is important to understand effects global occurring over hundreds or thousands years. However, long‐term reconstruction temperature still lacking for region Western Sichuan Plateau (WSP). In this study, we reconstructed summer (June–July) temperatures back 1383 WSP based positive correlation between standard chronology temperature....
Abstract Although many temperature time-series reconstructions, constructed on the basis of tree-ring widths, with lengths centuries to millennia have been published for parts southeastern Tibetan Plateau (SETP), field reconstruction has unaddressed date. Here, we present a network comprising 53 chronologies (one δ13C chronology, one regional maximum latewood density and 51 width chronologies). Using modified point-by-point method, consisting data from 28 meteorological stations in SETP over...
Three tree-ring STD chronologies of Abies faxoniana were developed from Songpan region Sichuan Province, and a regional chronology(RC) was established based on the three chronologies. The calculation shows that width significantly correlated with temperature, RC had highest correlation( r =0.576, P R adj2=32%, N =59, F =28.33). In past 310 years, there 8 warm periods 7 cool periods. According to analysis temporal spatial correlation, it indicated reconstructed series good representation. Our...
Variations in vegetation are closely related to climate change, but understanding of their characteristics and causes remains limited. As a typical semi-humid semi-arid cold plateau region, it is important understand the knowledge long term Normalized Difference Vegetation Index (NDVI) variations find potential source region Yangtze River. Based on four tree-ring width chronologies, regional mean NDVI for July August spanning period 1665–2013 was reconstructed using regression model,...
根据采自青海湖流域天峻地区树木年轮样本,建立了该地1061a树木年轮年表序列.通过响应函数计算得出,该年表对青海湖区前一年年降水量反映敏感,由其重建了该地的年降水量序列,并应用交叉检验方法对校准方程进行了检验,证明重建方程稳定,重建的年降水变化比较可靠,具有一定的代表性.在10a时间尺度上年降水经历了11个偏多和偏少时段,其中6(7)个显著的偏少(多)时段分别是1001-1060、1131-1320、1411-1510、1691-1740、1811-1850年和1911-1940年(961-1000、1061-1110、1321-1410、1511-1650、1741-1790、1881-1910年和1941-2000年).平均约53a发生一次突变,13-14世纪是年降水的多变时期,12、17和20世纪是年降水的相对稳定时段.;Tree-ring width chronologies of Sabina Tibetica were constructed based on tree-rings 1061-year sampled in Tianjun county Lake...
We constructed standard tree-ring-width chronology of Picea likiangensis var. rubescens for the Larima sampling site in Ganzi Prefecture, Sichuan Province, by single-free detren-ding method. The results showed that there was significant and positive correlation between tree-ring March-August 1-month scale standardized precipitation evapotranspiration index (SPEI1) Yajiang region. variation SPEI1 sequence 1942-2008 reconstructed based on current last year sequences chronology, with an...
Abstract Tree-ring width standard chronologies were created from Juniperus przewalskii Kom data collected in the southern Three-River Headwaters (TRH) region. Statistical analysis results showed high correlation between first primary component (PC1) of four and instrumental precipitation records during annual September–August interval. Precipitation region was reconstructed for past 461 years. It verified that reconstruction model stable by split-sample calibration-verification statistics....