高寒草地物候对气候变化响应的研究进展

Review of the Respond of Alpine Grassland Phenology to Climate Change

植物物候是植物适应其生长环境而呈现的规律性变化,被认为是最敏感和最容易观察到的自然现象之一。植物物候及其变化是多个环境因子综合影响的结果,其中气候是最重要、最活跃的环境因子。为了了解青藏高原高寒草地植物物候与气候因素之间的相互作用机制,更好地模拟和预测高寒草地生态系统对气候变化的响应。本文对国内外高寒草地植物对气候变化的响应研究进行了回顾。分析了以温度、降水、光照和积雪为主的气候因子对高寒草地植被物候的影响,阐述了高寒草地物候观测的方法,总结了气候变化对高寒草地植被物候研究现状和发展趋势。已有研究表明了物候变化能在一定程度上反映出气候变化的趋势,且气候因素作为物候的主要驱动力在不同的时期发挥着重要的作用。本文旨在结合高寒草地植物物候已有的研究方法为青藏高原高寒草甸区的研究提供一些参考和借鉴。

Plant phenology is one of the most sensitive and easily observed natural phenomena that plants adapt to their growth environment.Plant phenology and its changes are the result of the comprehensive influence of many environmental factors,among which climate is the most important and active environmental factor.In order to understand the interaction mechanism between plant phenology and climate factors in Alpine Grassland of Qinghai Tibet Plateau,and better simulate and predict the response of alpine grassland ecosystem to climate change.?The response of alpine grassland plants to climate change was reviewed in this paper.?This paper analyzes the influence of climate mainly including temperature,precipitation,sunshine and snow on vegetation phenology of alpine grassland,expounds the observation methods of alpine grassland phenology,and summarizes the research status and development trend of climate change on vegetation phenology of alpine grassland.?Previous studies have shown that phenological change can reflect the trend of climate change to a certain extent,and climate factors,as the main driving force of phenology,play an important role in different periods.?The purpose of this report is to provide some reference for the future study of alpine meadow in Southeast Tibet.