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Semi-natural grasslands phenological evolution in western Switzerland over 21 years

机译：西瑞士西部的半天然草原挥发性21年

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Producing a sufficient amount of high quality fodder has become a challenge in grassland-based livestock agriculture especially in the context of climate change, due to grass growth responsiveness to climate anomalies. Phenology is therefore a usefulindicator as it describes grasslands development linked to climate evolution. The aim of this study is to analyse trends in grassland phenology for different climate conditions. It is based on 21 years of grassland phenological records. Realisation datesof grass full heading stage, considered as first growth key point, have been analysed in order to evaluate inter-annual variation of spring precocity and trends in grassland earliness. Main findings arc that phenological inter-annual variation has increased, revealing a higher frequency of early or late springs and that there are trends toward an earlier spring development (one to three days earlier every ten years) for temperate thermal levels. These ongoing changes underline the importance of using indicators such as phenology in grassland management.
机译：产生足够的高质量饲料已经成为基于草原的牲畜农业的挑战，尤其是在气候变化的背景下，由于气候变化对气候异常的影响。因此，候选是有用的机器，因为它描述了与气候进化相关的草原发展。本研究的目的是分析不同气候条件的草地候选的趋势。它基于21年的草原职业记录。已经分析了草的完全标题阶段的阶段，被视为第一个增长关键点，以便评估早期春季预先幂和趋势的年间变化。主要调查结果赋予年度年间变化的弧度增加，揭示了早期或后期春季的频率较高，并且有趋势迈向早期的春季发展（每十年前一到三天）为温带热水位。这些正在进行的变化强调使用草地管理中诸如诸如诸如候选的指标的重要性。

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