Phenological changes reflect climate change in Wisconsin

被引：378

作者：

Bradley, NL

Leopold, AC

Ross, J

Huffaker, W

机构：

[1] Cornell Univ, Boyce Thompson Inst Plant Res, Ithaca, NY 14853 USA

[2] Aldo Leopold Fdn, Baraboo, WI 53919 USA

[3] Univ Wisconsin, Dept Agr Journalism, Madison, WI 53706 USA

来源：

PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA | 1999年 / 96卷 / 17期

关键词：

climate warming; phenology; flowering; bird migration; photoperiod;

D O I：

10.1073/pnas.96.17.9701

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

A phenological study of springtime events was made over a 61-year period at one site in southern Wisconsin. The records over this long period show that several phenological events have been increasing in earliness; we discuss evidence indicating that these changes reflect climate change. The mean of regressions for the 55 phenophases studied was -0.12 day per year, an overall increase in phenological earliness at this site during the period. Some phenophases have not increased in earliness, as would be expected for phenophases that are regulated by photoperiod or by a physiological signal other than local temperature.

引用

页码：9701 / 9704

页数：4