Soil health cluster analysis based on national monitoring of soil indicators
Soil health cluster analysis based on national monitoring of soil indicators
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基于国家土壤指标监测的土壤健康聚类分析
DOI：
10.1111/ejss.12958
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发表时间：
2020
影响因子：
4.2
通讯作者：
Seaton F
中科院分区：
文献类型：
--
作者：
Seaton F
土壤科学的一个主要挑战是在国家范围内监测和了解土壤的状态和变化，为决策和政策提供信息。为了解决这个问题，需要确定土壤健康和功能的关键参数，并确定它们与其他参数（包括传统土壤调查）的关系。在这里，我们提出了一个全国范围的表土样本数据集，作为英国威尔士更广泛的农业环境监测计划的一部分。在广泛的生境中取样了1350多个表层土壤（0-15 cm），并测量了一系列物理、化学和生物土壤质量指标。结果表明，不同生境类型的土壤理化性质存在一致的差异，从沼泽到林地、草地再到可耕地，在生境生产力梯度上，土壤的碳含量减少，pH值增加。我们数据集中的土壤基本上在支持栖息地功能的重要范围内，除了中营养化草地中磷酸盐水平过高。聚类检测方法根据测量的表层土壤性质识别出4个土壤功能类别，这些功能类别与生境类型的关系比土壤图中基于成因的土壤分类更密切。这些土壤功能分类可以被解释为传统土壤分类中发现的土壤基因型中的表现型。这表明土地利用管理在确定土壤健康和土壤功能能力方面的重要性。我们的工作提供了威尔士土壤健康现状的说明，它与土壤功能的关系，以及未来监测的基线，以跟踪农业环境和其他政策目标的变化。我们测量了不同温带生境约1350个地点的土壤物理化学性质。土壤碳和pH值有很强的梯度，其他变量与这些相关。土壤营养草地地点的磷酸盐水平高于良好功能的确定限度。表层土壤性质的土壤类别与土地利用的关系比土壤地图分类更大
A major challenge in soil science is to monitor and understand the state and change of soils at a national scale to inform decision making and policy. To address this, there is a need to identify key parameters for soil health and function and determine how they relate to other parameters, including traditional soil surveys. Here we present a national‐scale dataset of topsoil sampled as part of a wider agri‐environment monitoring scheme in Wales, UK. Over 1,350 topsoils (0–15 cm) were sampled across a very wide range of habitats and a range of physical, chemical and biological soil quality indicators were measured. We show consistent differences in soil physicochemical properties across habitat types, with carbon decreasing and pH increasing across the habitat productivity gradient from bogs through woodlands and grasslands to arable systems. The soils within our dataset are largely within the limits identified as important for supporting habitat function, with the exception of excessive phosphate levels in mesotrophic grassland. Cluster detection methods identified four soil functional classes based on measured topsoil properties, which were more related to habitat type than the genesis‐based soil classification from soil maps. These soil functional classes can be interpreted as phenoforms within the soil genoforms found by traditional soil classification. This shows the importance of land‐use management in determining the soil health and functional capacity of soils. Our work provides an account of the current state of soil health in Wales, its relationship to soil function and a baseline for future monitoring to track changes against agri‐environment and other policy targets.HighlightsWe measured soil physicochemical properties in ~1,350 sites in a variety of temperate habitatsThere was a strong gradient in soil carbon and pH, with other variables being correlated with theseMesotrophic grassland sites had phosphate levels above the identified limit for good functioningSoil classes from topsoil properties were more related to land use than soil map classifications
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DOI：
10.5194/se-2016-153
发表时间：
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期刊：
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影响因子：
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