气候变化领域集成服务门户(CCPortal): Assessing drought variability since 1650 AD from tree-rings on the Jade Dragon Snow Mountain, southwest China

CCPortal

DOI	10.1002/joc.4264
	Assessing drought variability since 1650 AD from tree-rings on the Jade Dragon Snow Mountain, southwest China
	Bi, Yingfeng; Xu, Jianchu; Gebrekirstos, Aster; Guo, Liang; Zhao, Mingxu; Liang, Eryuan; Yang, Xuefei
通讯作者	Yang, XF (通讯作者)
发表日期	2015
ISSN	0899-8418
EISSN	1097-0088
起始页码	4057
结束页码	4065
卷号	35 期号:14
英文摘要	Southwest China has experienced significant drought during the past few years. To better understand the tendency of drought changes over time, this study applies dendroclimatological techniques to assess drought variations in Lijiang Prefecture, southwest China. So far, the longest chronology (387 years) of Picea likiangensis on the Jade Dragon Snow Mountain was constructed, and the relationships between the tree-ring width and climate variables were analysed. The spring season Palmer Drought Severity Index (PDSI) was reconstructed based on a standard chronology. Tree-ring width is positively related to precipitation and relative humidity from February to March and the PDSI from January to May. Conversely, tree-ring width is also negatively related with mean temperature from January to May, suggesting that growth of P. likiangensis is affected both by temperature and precipitation. The reconstructed PDSI showed that the Jade Dragon Snow Mountain has experienced considerable variations in spring drought conditions during the past 361 years. Four distinct periods were recognized: (1) 1650-1730, a relatively humid period with an average PDSI value above zero; (2) 1730-1860, a period with greatly fluctuating PDSI and intermittent wet periods (1746-1755, 1782-1800, and 1820-1830) and several dry periods (1735-1745, 1756-1780, 1810-1820, and 1830-1860); (3) 1870-1945, a humid period, with the highest PDSI value during 1930-1945; and (4) 1945-2011, a period with decreasing humidity. The results are consistent with hydrological studies in nearby regions and related species, as well as historical records of natural disasters. The recently observed spring drought follows a trend of decreasing humidity over the past 60 years, suggesting that a sound strategy for management and land-use planning is required to secure ecosystem and human well-being.
关键词	CENTRAL HENGDUAN MOUNTAINS CLIMATE-CHANGE PRECIPITATION RECONSTRUCTION REGION YUNNAN DENDROCLIMATOLOGY BIODIVERSITY TEMPERATURE PLATEAU
英文关键词	drought; Hengduan Mountains; PDSI; tree-ring width; Picea likiangensis
语种	英语
WOS研究方向	Meteorology & Atmospheric Sciences
WOS类目	Meteorology & Atmospheric Sciences
WOS记录号	WOS:000365518600001
来源期刊	INTERNATIONAL JOURNAL OF CLIMATOLOGY
来源机构	中国科学院青藏高原研究所
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/258569
推荐引用方式 GB/T 7714	Bi, Yingfeng,Xu, Jianchu,Gebrekirstos, Aster,et al. Assessing drought variability since 1650 AD from tree-rings on the Jade Dragon Snow Mountain, southwest China[J]. 中国科学院青藏高原研究所,2015,35(14).
APA	Bi, Yingfeng.,Xu, Jianchu.,Gebrekirstos, Aster.,Guo, Liang.,Zhao, Mingxu.,...&Yang, Xuefei.(2015).Assessing drought variability since 1650 AD from tree-rings on the Jade Dragon Snow Mountain, southwest China.INTERNATIONAL JOURNAL OF CLIMATOLOGY,35(14).
MLA	Bi, Yingfeng,et al."Assessing drought variability since 1650 AD from tree-rings on the Jade Dragon Snow Mountain, southwest China".INTERNATIONAL JOURNAL OF CLIMATOLOGY 35.14(2015).