北美东部8种温带树种向北分布的限制气候因子(英文)

doi:10.3321/j.issn:1672-9072.2002.02.014

CORC > 北京大学 > 城市与环境学院

	北美东部8种温带树种向北分布的限制气候因子(英文); Climatic factors for limiting northward distribution of eight temperate tree species in Eastern North America
	方精云 ; 李莹
刊名	植物学报
	2002
关键词	北美东部分布北界气候指数积温降水标准差 eastern North America northward limit of distribution climatic index growing season temperature precipitation standard deviation
DOI	10.3321/j.issn:1672-9072.2002.02.014
英文摘要	利用分布于北美东部的 8种温带落叶树种为研究材料 ,应用反映热量和降水状况的 11个变量为气候指标 ,用标准差分析方法分析了这 8个树种的分布北界与气候因子之间的关系。结果表明 ,在所使用的气候指标中 ,同一树种不同地点的温暖指数或年生物温度的标准差最小 ,说明积温是限制这些树种向北分布的主要气候因子 ;温暖指数和寒冷指数随着年降水量的增大而减小 ,寒冷指数随着年较差的增加而增加 ,温暖指数随着水热综合指数的增加表现出减小的趋势。表明 ,除了生长季节的积温之外 ,降水和大陆性等气候条件对温带树种向北分布也起着重要作用; Eight temperate deciduous tree species, Acer rubrum L., A. saccharinum L., A. saccharum Marsh., Belluta alleghaniensis Britton., Fraxinus nigra Marsh., Quercus rubra L., Titia americana L., and Ulmus americana L. in eastern North America, were selected to explore relationship between the northward distribution of temperate tree species and climatic factors. For each species, more than 30 sites at their north limits of distribution were obtained from their distribution maps, and 11 climatic indices at the north limits were computed. The standardized standard deviation (SD) method, which compares the magnitude of variance of climatic indices, was used to detect which climatic parameter was the most important for explaining northward distribution of these species. We presume that the climatic parameter that has the smallest variance at the north limit would be assigned as the dominant climatic factor for limiting the distribution of this species. The results derived from the standardized SD method indicated that the SD value of warmth index (WI) and/or annual biotemperature (ABT) were the smallest among the I I climatic indices. Since both WI and ABT represent growing season temperature, it suggested that growing season temperature was the most important climatic factor for explaining the northward distribution of these temperate tree species. The relationships between several climatic indices, WI, coldness index (CI), annual precipitation (AP), annual range of temperature (ART) and humid/arid index were also analyzed. As a result, at the north limits of all these species, both WI and CI decreased with an increase of AP, and CI increased with an increase of ART. Besides growing season temperature, precipitation and climatic continentality also have influence on the northward distribution of the temperate trees in eastern North America.; http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000174339100015&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=8e1609b174ce4e31116a60747a720701 ; SCI(E); 中国科学引文数据库(CSCD); 3; 02; 199-203; 44
语种	中文
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/69998]
专题	城市与环境学院
推荐引用方式 GB/T 7714	方精云,李莹. 北美东部8种温带树种向北分布的限制气候因子(英文), Climatic factors for limiting northward distribution of eight temperate tree species in Eastern North America[J]. 植物学报,2002.
APA	方精云,&李莹.(2002).北美东部8种温带树种向北分布的限制气候因子(英文).植物学报.
MLA	方精云,et al."北美东部8种温带树种向北分布的限制气候因子(英文)".植物学报 (2002).