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生态学杂志 ›› 2010, Vol. 29 ›› Issue (04): 624-629.

• 研究报告 • 上一篇    下一篇

典型高寒植物生长繁殖特征对模拟气候变化的短期响应

李英年1,4**,薛晓娟1,2,王建雷1,2,朱志红3,张法伟1,李婧梅1,2,汪诗平1,周华坤1   

  1. 1中国科学院西北高原生物研究所,西宁 810001;2中国科学院研究生院,北京 100039;3陕西师范大学,西安 710062;4中国科学院高原生物适应与进化重点实验室,西宁 810001
  • 出版日期:2010-04-09 发布日期:2010-04-09

Short-term responses of typical alpine plant species growth and reproductive characteristics to simulated climate change.

LI Ying-nian1,4,XUE Xiao-juan1,2,WANG Jian-lei1,2,ZHU Zhi-hong3,ZHANG Fa-wei1,LI Jing-mei1,2,WANG Shi-ping1,ZHOU Hua-kun1   

  1. 1Northwest Institute of Plateau Biology,Chinese Academy of Sciences,Xining 810001,China;2Graduate University of the Chinese Academy of Sciences,Beijing 100039,China;3College of Life Science,Shannxi Normal University,Xi’an 710062,China|4Key Laboratory of Adaptation and Evolution of Plateau Biota,Northwest Institute of Plateau Biology,Chinese Academy of Sciences,Xining 810001,China
  • Online:2010-04-09 Published:2010-04-09

摘要: 高寒植物的生长繁殖策略对气候变化的响应十分敏感但研究较少。在青藏高原东北的祁连山南麓坡地,于2007年沿3200~3800 m海拔进行了植被的等距双向移栽实验并研究了典型高寒植物的生长繁殖策略对模拟气候变化的响应。结果表明,移栽样线年平均气温随海拔升高的递减率为0.51℃/100m。高寒植物移栽到高海拔后,其株高、基叶数、最大(小)叶面积等生长性状指标均发生显著变化,呈现出在3400 m海拔处最高,其余3海拔处较低的趋势;而生殖枝数、花数和有性繁殖投入等生殖策略的响应则不明显,但具有随海拔升高而降低,最后在3800 m处升高的变化。结果印证了气候变化对高寒植物生长性状的影响比生殖策略快速的假说。

关键词: 中国对虾, 温度, 生长, 能量收支

Abstract: Alpine plant species are very sensitive to the climate change in their growth and reproductive characteristics,but few studies are made on it. In this paper,a reciprocal transplanted experiment was conducted along an altitude gradient from 3200 m to 3800 m at the south slope of Qilian Mountains in the northeast of Qinghai-Tibetan Plateau,aimed to understand the responses of typical alpine plant species growth and reproductive characteristics to simulated climate change. With the increase of the altitude,the mean annual air temperature decreased at a rate of 0.51 ℃/100 m,and the plant height,base leaf number,and maximum (minimum) leaf area had the peak values at 3400 m but lowered at other three altitudes. The responses of reproductive strategies such as reproductive branch number,flower number,and reproductive input were not obvious,but had a decreasing trend with increasing altitude. The results confirmed the hypothesis that climate change had more obvious effects on plant growth than on its reproductive characteristics.

Key words: Fenneropenaeu chinensis, Temperature, Growth, Energy budget