欢迎您！东篱公司
退出
-
申报数据库
-
立项数据库
-
成果数据库
-
项目获奖数据库
中文摘要：
利用采自青藏高原东南部横断山地区的冷杉树轮样本建立了一个近500年的树轮宽度年表.与气候要素进行相关分析发现,该地区树木生长主要受干旱限制,树轮年表与多个月份的PDSI和降水相关显著,其中与前一年9月至当年6月（P9C6）降水的相关值最高（r=0.738,P〈0.01）.在此相关关系基础上,利用该年表重建了横断山地区过去457年来的降水变化历史,重建方程的方差解释量高达54.4%（R2adj=53.5%,N=49,F=56.12）.重建可靠时段（1549～2006年）结果显示,重建的降水序列中包含了较多的低频变化信息,并显示近20多年该区域有显著变湿趋势.在过去的457年中该地区降水存在6个明显的干旱时期和5个湿润时期,其中17世纪的干旱持续时间最长.与邻近地区其他基于树轮资料的湿度重建结果对比发现,该地区树轮记录的干湿变化时段比较一致.面域空间相关分析结果进一步表明,本文重建的降水变化序列对整个青藏高原东南部横断山地区都具有较好的空间代表性.多窗谱分析结果显示该地区降水变化存在显著的3～5,60和79～85a左右变化周期（P〈0.01）.
同期刊论文项目
同项目期刊论文
Individual and time-varying tree-ring growth to climate sensitivity of Pinus tabuliformis Carr. andS
Climate-growth analysis of Qilian juniper across an altitudinal gradient in the central Qilian Mount
Influence of non-climatic factors on the relationships between tree growth and climate over the Chin
Assessing the influences of tree species, elevation and climate on tree-ring growth in the Qilian Mo
An 850-year tree-ring based reconstruction of drought history in the western Qilian Mountains of nor
A 457-year reconstruction of precipitation in the southeastern Qinghai-Tibet Plateau,China using tre
A 457-year reconstruction of precipitation in the southeast of the Qinghai-Tibet Plateau using tree-
Millennium tree-ring reconstruction of drought variability in the eastern Qilian Mountains, northwes
Forward modeling analyses of Qilian Juniper (Sabina przewalskii) growth in response to climate facto
An 850-year tree-ring-based reconstruction of drought history in the western Qilian Mountains of nor
Early-summer temperature variations over the past 563 yr inferred from tree rings in the Shaluli Mou
A method to separate temperature and precipitation signals encoded in tree-ring widths for the weste
Dendroclimatic response of Picea crassifolia along an altitudinal gradient in the eastern Qilian Mou
Late Quaternary (30.7-9.0 cal ka BP) vegetation history in Central Asia inferred from pollen records
A high-resolution record of Holocene environmental and climatic changes from Lake Balikun (Xinjiang,
Spatial and temporal variety of prehistoric sites and its influencing factors in the upper Yellow Ri
Glacier changes from 1966-2009 in the in the Gongga Mountains, on the south-eastern margin of the Qi
A 16-ka lake-level record inferred from macrofossils in a sediment core from Genggahai Lake, northea
Influence of household biogas digester use on household energy consumption in a semi-arid rural regi
A comparative study of radiocarbon dating charcoal and charred seeds from the same flotation samples
Precipitation variations and possible forcing factors on the Northeastern Tibetan Plateau during the
Glacier variations in response to climate change from 1972 to 2007 in the western Lenglongling mount
Comparison of topsoil magnetic properties between the loess region in Tianshan Mountains and Loess P
Interannual precipitation variations in the mid-latitude Asia and their association with large-scale
Process of paleofloods in Guanting basin, Qinghai Province, China and possible relation to monsoon s
Soil Microbial and Enzymatic Activities Across a Chronosequence of Chinese Pine Plantation Developme
A 457-year reconstruction of precipitation in the southeastern Qinghai-Tibet Plateau, China using tr
Patterns and dynamics of tree-line response to climate change in the eastern of Qilian Mountains, no
Compound-specific hydrogen isotopes of long-chain n-alkanes extracted from topsoil under a grassland
Magnetostratigraphy and palaeoenvironmental records for a Late Cenozoic sedimentary sequence from La
Late Cenozoic orogenic history of Western Qinling inferred from sedimentation of Tianshui basin, nor
Cenozoic tectonic uplift history of Western Qinling: Evidence from sedimentary and fission-track dat
Stable carbon and oxygen isotopic study of carbonate along a loess/paleosol section located in south
Conifer stomata analysis in paleoecological studies on the Loess Plateau: an example from Tianchi La
Annual precipitation reconstruction since AD 775 based on tree rings from the Qilian Mountains, nort
The ultrafine component in Chinese loess and its variation over the past 7.6 Ma: implications for th
Holocene vegetation and climate histories in the eastern Tibetan Plateau: controls by insolation-dri
Eocene to Pliocene exhumation history of the Tianshui-Huicheng region determined by Apatite fission-
Amplitudes, rates, periodicities and causes of temperature variations in the past 2485 years and fut
Summer mean temperature variation from 1710-2005 inferred from tree-ring data of the Baimang Snow Mo
Annual precipitation in Liancheng, China, since 1777AD derived from tree rings of Chinese pine (Pinu
Spatiotemporal drought variability for central and eastern Asia over the past seven centuries derive
Is the maximum carbon number of long-chain n-alkanes an indicator of grassland or forest? Evidence f
Variation and paleoclimatic significance of organic carbon isotopes of Ili loess in arid Central Asi
A high-resolution multi-proxy record of late Cenozoic environment change from central Taklimakan Des
期刊信息
位置：