全球变化下植物物候研究的关键问题  

The key issues on plant phenology under global change

作　　者：莫非[1] 赵鸿[1,2] 王建永[1] 强生才[1,3] 周宏[1,3] 王绍明[4] 熊友才[1,4] 

机构地区：[1]兰州大学干旱与草地生态教育部重点实验室,甘肃兰州730000 [2]中国气象局兰州干旱气象研究所,甘肃省干旱气候变化与减灾重点实验室,中国气象局干旱气候变化与减灾重点开放实验室,甘肃兰州730020 [3]甘肃农业大学工学院,甘肃兰州730070 [4]石河子大学生命科学学院,新疆石河子832003

出　　处：《生态学报》2011年第9期2593-2601,共9页Acta Ecologica Sinica

基　　金：国家公益性行业(气象)科研专项子课题(GYHY200806021-06,GYHY201106029);国家自然科学基金项目(31070372,30970447);国家重点基础研究发展计划资助项目(973项目)(2009CB825101);兰州大学人才引进专项项目(582449)

摘　　要：总结了全球变化下植物物候研究的主要进展,针对该领域国内外的几个热点问题进行了讨论。植物物候研究的重心从以前的野外观测和初步统计分析逐步过渡到以揭示物候周期的调控机制和环境效应为主,研究手段从植物物候对环境变化做出反应的表象描述转移到多尺度、多要素耦合关系的综合分析。随着学科交叉研究的不断深入,植物物候研究从植物个体及居群适应性研究转向植物物候变化对生态系统、气候演变、农业生产乃至人类健康等方面影响的系统评估。并且在该转变过程中出现了几个关键性问题,如不同温度带大气温度与光周期对植物物候期贡献力问题、植物物候变化对气候变暖的非线性响应特征、群落水平上植物物候研究的复杂性、以及农业生态系统中作物物候研究的重要性等。对我国植物物候研究现状和管理体系中亟待解决的问题提出了建议。Plant phenology is an indicator of climate change.Both global warming and extreme climate lead to a critical change in plant phenological characteristics.It is of great importance to elucidate the evolution and mechanism of plant phenology in response to climate change.Natural plant phenological system contains the most direct and effective eco-physiological evidences as a product of global environmental change,which acts as an important complement to instrumental records.Plant phenological performance is extensively considered as a series of life history strategies for plants in a changing environment,which is in general closely related to reproduction of plant population and maintenance of biological diversity.It is highly sensitive to climate change and displays fine adaptability to the change as well.The combination of current phenological database with historical phenological records provides a facility to reveal the coupling relationship between climate change and plant phenological cycle.Previous studies showed that long-term located observation and relevant integrated analysis on plant phenological performance would help reveal the ecological adaptive characteristics of plant phonology,and assess the positive and negative feedbacks between plant phenology and climate change.With the rise of global change ecology in recent years,great efforts have been made on quantitatively assessing material production and carbon cycle in ecosystem in field of plant phenology,particularly underlying that interaction between plant phenological cycle and carbon cycle in ecosystem has become a hot issue.This paper summarizes major progresses in plant phenology under global change and proposes a few domestic and international hot issues in this field.The research interest of plant phenology has gradually shifted the focus from previous field observations and preliminary statistical analysis to current environmental outcome assessement and regulatory mechanism investigation of phenological cycle.The methodology of plant pheno

关 键 词：全球变化 植物物候 关键问题 综述 

分 类 号：Q948[生物学—植物学]