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首页> 外文期刊>Ecological management & restoration >Challenges in applying scientific evidence to width recommendations for riparian management in agricultural Australia
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Challenges in applying scientific evidence to width recommendations for riparian management in agricultural Australia

机译：将科学证据应用于澳大利亚农业河岸管理宽度建议的挑战

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Intact riparian zones maintain aquatic-terrestrial ecosystem function and ultimately, waterway health. Effective riparian management is a major step towards improving the condition of waterways and usually involves the creation of a 'buffer' by fencing off the stream and planting vegetation. Determination of buffer widths often reflects logistical constraints Ce.g. private land ownership, existing infrastructure) of riparian and adjacent areas, rather than relying on rigorous science. We used published information to support riparian width recommendations for waterways in agricultural Victoria, Australia. We focused on different ecological management objectives (e.g. nutrient reduction or erosion control) and scrutinised the applicability of data across different environmental contexts (e.g. adjacent land use or geomorphology). Not surprisingly, the evidence supported variable 'effective' riparian widths, depending on the objective and environmental context. We used this information to develop a framework for determining riparian buffer widths to meet a variety of ecological objectives in south-east Australia. Widths for reducing nutrient inputs to waterways were most strongly supported with quantitative evidence and varied between 20 and 38 m depending on environmental context. The environmental context wa's inconsistently reported, making it difficult to recommend appropriate widths, under different land-use and physiographic scenarios. The evidence to guide width determination generally had high levels of uncertainty. Despite the considerable amount of published riparian research, there was insufficient evidence to demonstrate that implemented widths achieved ecological objectives. We emphasise the need for managers to clearly articulate the objectives of proposed riparian management and carefully consider the environmental context. Monitoring ecological responses associated with different riparian buffer widths is essential to support future management decisions.
机译：完整的河岸带维持水陆生态系统功能，并最终维持水路健康。有效的河岸管理是改善水路状况的重要一步，通常涉及通过围栏溪流和种植植被来创建“缓冲区”。缓冲区宽度的确定通常反映后勤约束。沿岸地区和邻近地区的私有土地所有权，现有基础设施），而不是依赖严格的科学。我们使用已发布的信息来支持澳大利亚维多利亚州农业水道的河岸宽度建议。我们专注于不同的生态管理目标（例如减少养分或控制侵蚀），并仔细研究了数据在不同环境背景下（例如相邻土地利用或地貌）的适用性。不足为奇的是，证据支持可变的“有效”河岸宽度，这取决于目标和环境。我们使用此信息开发了一个框架，用于确定河岸缓冲带宽度，以满足澳大利亚东南部的各种生态目标。减少营养物输入水道的宽度受到定量证据的最有力支持，其宽度在20至38 m之间，视环境而定。报告的环境背景不一致，因此在不同的土地利用和自然地理情景下，很难建议合适的宽度。指导宽度确定的证据通常具有很高的不确定性。尽管已发表了大量关于河岸的研究，但没有足够的证据表明已实施的河道宽度已达到生态目标。我们强调，管理人员必须清楚阐明拟议的河岸管理目标并仔细考虑环境情况。监测与不同河岸缓冲区宽度相关的生态响应对于支持未来的管理决策至关重要。

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