气候变化领域集成服务门户(CCPortal): Climate-growth relationships of relict Pinus tabulaeformis at the northern limit of its natural distribution in northern China

CCPortal

DOI	10.3170/2008-8-18379
	Climate-growth relationships of relict Pinus tabulaeformis at the northern limit of its natural distribution in northern China
	Liang, Eryuan; Eckstein, Dieter; Liu, Hongyon
通讯作者	Liang, E (通讯作者)
发表日期	2008
ISSN	1100-9233
EISSN	1654-1103
起始页码	393
结束页码	406
卷号	19 期号:3
英文摘要	Questions: Sand storms from east Inner Mongolia are a major threat to the ecological safety of North China and actions are desirable to control further desertification. Small patches of relict Pinus tabulaeformis could play a major role in this. The climate signal recorded in the tree-ring widths and the dates of past regeneration episodes of these trees growing at the northern border of their natural distribution are considered here. Location: Ortindag Sand Land in North China. Methods: We collected increment cores from relict P. tabulaeformis trees at five sites, built a standard tree-ring chronology for each site and a regional tree- ring chronology from the three longest site chronologies, analysed the tree growth/climate relationships and determined the germination years of the trees to recognize past regeneration dynamics. Results: Monthly precipitation and relative air humidity in the previous and current growing seasons are the major limiting factors for the radial growth of P. tabulaeformis. Years with a high frequency of absent tree rings are characterized by particularly extreme dry conditions. These results are supported by negative correlations between radial growth and monthly maximum temperature and evaporation during the growing season. In a 163-year time series of precipitation from previous July to current June reconstructed from the tree rings, cycles with wave lengths of 2-3, 17.4 and 20.5 years are significant. Conclusion: P. tabulaeformis trees are reliable recorders of high and low frequency variations of dry/wet environmental conditions in the Ortindag Sand Land. Their age structures within the forest patches prove that they regenerate preferen-they regenerate preferen-preferentially in less dry periods.
关键词	INNER-MONGOLIA TREE-RINGS PRECIPITATION VARIATION TIBETAN PLATEAU ABIES-ALBA DROUGHT FOREST TEMPERATURE SYLVESTRIS WOODLAND
英文关键词	degradation; drought; Pinus tabulaeformis; reconstruction; semi-arid land; tree ring
语种	英语
WOS研究方向	Plant Sciences ; Environmental Sciences & Ecology ; Forestry
WOS类目	Plant Sciences ; Ecology ; Forestry
WOS记录号	WOS:000255199100011
来源期刊	JOURNAL OF VEGETATION SCIENCE
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/257583
推荐引用方式 GB/T 7714	Liang, Eryuan,Eckstein, Dieter,Liu, Hongyon. Climate-growth relationships of relict Pinus tabulaeformis at the northern limit of its natural distribution in northern China[J]. 中国科学院青藏高原研究所,2008,19(3).
APA	Liang, Eryuan,Eckstein, Dieter,&Liu, Hongyon.(2008).Climate-growth relationships of relict Pinus tabulaeformis at the northern limit of its natural distribution in northern China.JOURNAL OF VEGETATION SCIENCE,19(3).
MLA	Liang, Eryuan,et al."Climate-growth relationships of relict Pinus tabulaeformis at the northern limit of its natural distribution in northern China".JOURNAL OF VEGETATION SCIENCE 19.3(2008).