A REVIEW OF PHOSPHORUS AND SEDIMENT RELEASE FROM IRISH TILLAGE SOILS, THE METHODS USED TO QUANTIFY LOSSES AND THE CURRENT STATE OF MITIGATION PRACTICE
A REVIEW OF PHOSPHORUS AND SEDIMENT RELEASE FROM IRISH TILLAGE SOILS, THE METHODS USED TO QUANTIFY LOSSES AND THE CURRENT STATE OF MITIGATION PRACTICE
复制标题
对爱尔兰耕作土壤的磷和沉积物释放、量化损失的方法以及缓解实践的现状进行回顾
DOI：
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发表时间：
2022
期刊：
影响因子：
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通讯作者：
M. Healy
中科院分区：
文献类型：
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作者：
J. T. Regan;O. Fenton;M. Healy
翻译后摘要：在整个欧洲联盟（EU），农业土壤高磷（P）的地位，由于过剩的化肥投入已被确定为景观压力对水质的影响。在爱尔兰共和国，大约80%的农业用地用于牧草，11%用于粗放牧，9%用于可耕地谷物和作物生产。因此，大多数侵蚀研究都集中在量化草地的养分和泥沙流失。耕作土壤，但是，更容易受到侵蚀比草地土壤，在一般情况下，有较高的土壤磷。本文综述了目前的研究状况和监管制度有关的扩散磷和泥沙流失的耕作土壤。它确定了与耕作土壤相关的土壤质量的主要威胁，并提出了针对性和补救的关键来源地区，有效减轻耕作土壤中的磷流失。一个多尺度的方法，其中集水区和现场规模的监测是补充控制实验室和小地块规模的降雨模拟实验，以确定地区的磷流失和土壤侵蚀处于临界水平，并可能对水质构成威胁。流域尺度的研究将有助于将沉积物和磷流失的关键源区与流域地表沃茨的水文路径联系起来。然后，这些地区可以作为河流流域管理计划的补救目标。
Abstract:Throughout the European Union (EU), agricultural soils with high phosphorus (P) status due to surplus fertiliser input have been identified as a landscape pressure impacting on water quality. In Republic of Ireland, approximately 80% of agricultural land is devoted to grass, 11% to rough grazing, and 9% to arable cereal and crop production. Consequently, the majority of erosion research has focused on quantifying nutrient and sediment losses from grassland. Tillage soils are, however, more susceptible to erosion than grassland soils and, in general, have higher levels of soil P. This paper reviews the current state of research and the regulatory regime relating to diffuse P and sediment loss for tillage soils. It identifies the key threats to soil quality associated with cultivated soils, and proposes the targeting and remediation of critical source areas for effective mitigation of P losses from tillage soils. A multiscaled approach is recommended, in which catchment and field-scale monitoring is complemented with controlled laboratory and small plot-scale rainfall simulation experiments to identify areas where P loss and soil erosion are at critical levels and may pose a threat to water quality. Catchment scale research will help to link critical source areas of sediment and P loss with hydrological pathways to surface waters in the catchment area. These areas can then be targeted for remediation in the river basin management plans.