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首页> 外文期刊>Regional Environmental Change >Analyzing climate change and surface-subsurface interactions using the Postojna Planina Cave System (Slovenia) as a model system
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Analyzing climate change and surface-subsurface interactions using the Postojna Planina Cave System (Slovenia) as a model system

机译：使用Postojna Planina洞穴系统（斯洛文尼亚）作为模型系统来分析气候变化和地表下相互作用

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摘要

Worldwide, there are at least 12 ILTER sites with an emphasis on karst, landforms arising from the combination of high rock solubility and well-developed solutional channel porosity underground, but the study of cave ecosystems has been largely neglected. Only two ILTER sites, both in Slovenia, are primarily caves. Caves are under-represented for several reasons, but especially because of the overall difficulty of access and the lack of a clear research agenda for cave ecosystem studies. We review several aspects of long-term studies in Postojna Planina Cave System (PPCS), proposing our approach as a model for ILTER research in caves. In PPCS, analysis of short-term temperature data shows a muted daily cycle and seasonality, and analysis of long-term temperature data shows an increase, largely the result of climate change. Changes in drip rate of epikarst aquifers above the cave are correlated with rainfall but with lags and complications resulting from differences in longer term rainfall patterns. Analysis of discharge rates indicates a rapid response to precipitation not only in the Pivka River at its sinking, but also at Unica Spring, where discharge is augmented from other parts of the aquifer, including epikarst. Quantitative analysis of the obligate epikarst-dwelling copepod community shows that, unlike most cave communities, complete sampling of the fauna is possible. Finally, organic carbon levels in PPCS indicate likely carbon limitation in the system. These five factors (temperature, drip rate, river discharge, epikarst copepod fauna, and organic carbon) are the appropriate variables for capturing the essential long-term trends in cave ecosystems and their causes.
机译：在世界范围内，至少有12个ILTER站点，重点是岩溶，高岩石溶解度和发达的地下溶液河道孔隙度相结合而形成的地貌，但对洞穴生态系统的研究一直被忽略。仅在斯洛文尼亚的两个ILTER地点主要是洞穴。洞穴的代表性不足有几个原因，特别是由于进入的总体困难以及缺乏对洞穴生态系统研究的明确研究议程。我们回顾了Postojna Planina洞穴系统（PPCS）的长期研究的几个方面，提出了我们作为洞穴ILTER研究模型的方法。在PPCS中，对短期温度数据的分析显示出无规律的每日周期和季节性，而对长期温度数据的分析则显示出上升，这很大程度上是气候变化的结果。洞穴上方表层岩溶含水层的滴水率变化与降雨相关，但与长期降雨模式的差异导致的滞后和复杂性有关。对流量的分析表明，不仅在Pivka河下沉时，而且在尤尼卡斯普林河（Unica Spring）对降水都有快速响应，那里的含水层其他部分（包括表岩溶）增加了流量。对专性喀斯特喀斯特喀斯特co足类群落的定量分析表明，与大多数洞穴群落不同，可以对动物区系进行完整采样。最后，PPCS中的有机碳水平表明系统中可能存在碳限制。这五个因素（温度，滴水率，河流量，岩溶co足动物群和有机碳）是捕获洞穴生态系统中基本的长期趋势及其成因的合适变量。

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