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首页> 外文期刊>Climatic Change >Changes in vascular plant biodiversity in the Netherlands in the 20th century explained by their climatic and other environmental characteristics
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Changes in vascular plant biodiversity in the Netherlands in the 20th century explained by their climatic and other environmental characteristics

机译：气候和其他环境特征解释了20世纪荷兰维管植物生物多样性的变化

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In the Netherlands nation-wide databases are available with about 10 million records of occurrences of vascular plant species in the 20th century on a scale of approximately 1 km(2) stop. These data were analysed with a view to identifying relationships between changes in botanical biodiversity and climatic and other environmental factors. Prior to analysis the data were corrected for several major forms of survey bias. The records were broken down into three periods: 1902-1949, 1975-1984 and 1985-1999. Using multiple regression analysis, differences between successive periods were related to plant functional characteristics as explanatory variables. Between the periods 1902-1949 and 1975-1984 there were small but significant increases in the presence of both thermophilic ('warm') and psychrophilic ('cold') species. However, in the final decades of the 20th century there was a marked increase in thermophilic species only, coinciding with the marked increase in ambient temperature observed during this period, evidence at least of a rapid response of Dutch flora to climate change. Urbanisation was also examined as an alternative explanation for the increase in thermophilic plant species and was found to explain only 50% of the increased presence of such species in the final decades of the 20th century. Besides temperature-related effects, the most important change during the 20th century was a strong decline in oligotrophic and a marked increase in eutrophic plant species.
机译：在荷兰，可以使用全国范围的数据库，其中包含20世纪大约1千万条维管植物物种的发生记录，范围约为1 km（2）。对这些数据进行了分析，以查明植物生物多样性的变化与气候和其他环境因素之间的关系。在分析之前，对数据进行了几种主要形式的调查偏差校正。记录分为三个时期：1902-1949、1975-1984和1985-1999。使用多元回归分析，连续期间之间的差异与作为解释变量的植物功能特征有关。在1902-1949年和1975-1984年之间，嗜热（“温暖”）和嗜冷（“冷”）物种的存在都有微小但显着的增加。但是，在20世纪的最后几十年中，仅嗜热菌种才出现显着增加，这与这段时期内观察到的环境温度显着增加相吻合，至少证明了荷兰植物对气候变化的快速反应。还研究了城市化作为嗜热植物物种增加的另一种解释，并发现该现象仅解释了20世纪最后几十年此类物种增加的50％。除了与温度有关的影响外，20世纪最重要的变化是贫营养的急剧下降和富营养的植物种类的显着增加。

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