Effects of Cultivation and Alternative Vineyard Management Practices on Soil Carbon Storage in Diverse Mediterranean Landscapes: A Review of the Literature
Effects of Cultivation and Alternative Vineyard Management Practices on Soil Carbon Storage in Diverse Mediterranean Landscapes: A Review of the Literature
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DOI：
10.1080/21683565.2015.1007407
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发表时间：
2015-05-28
影响因子：
2.6
通讯作者：
Gershenson, Alexander
中科院分区：
文献类型：
--
作者：
Eldon, Jon;Gershenson, Alexander
通过减少排放和固碳来管理地貌层面的碳储存，正在成为应对人类活动造成的大气碳负荷的一种可行的地方对策。非耕地利用和土地覆被（LULC）向可耕地或多年生作物系统的转换被广泛认为是导致土壤有机碳（SOC）显著分解的原因。最大限度地减少这些耕地用途的转换和倡导替代管理已被确定为有可能最大限度地减少这种损失，并有可能螯合大气中的碳。然而，有效的景观管理需要更严格的理解，以便为当地决策提供信息。对不同地中海景观中已发表的研究的回顾发现，耕地面积约占未耕地LULC SOC的一半，葡萄园通常含有景观中观察到的最低SOC水平。通过替代管理的缓解可以导致更高的SOC水平比传统的管理，但后者可能是一小部分的C损失从最初的耕作。然而，大多数相关研究依赖于浅的标准化采样深度和其他协议，已被证明会导致现有SOC储量的错误计算。新的采样技术和新兴的研究机会有可能彻底改变我们对这个问题的理解，并支持科学合理的碳基景观管理。
Managing carbon storage at the landscape level through emission reduction and carbon sequestration is emerging as a viable local response to atmospheric carbon loading from anthropogenic activities. The conversion of uncultivated land uses and land covers (LULCs) to arable or perennial cropping systems is widely recognized as resulting in significant decomposition of soil organic carbon (SOC). Minimizing conversion and advocating alternative management of these cultivated land uses have been identified as having the potential to minimize this loss and potentially sequester atmospheric carbon. However, effective landscape management requires a more rigorous understanding to inform local decision-making. This review of published studies within diverse Mediterranean landscapes found that cultivated areas contained roughly half of the SOC of uncultivated LULCs, with vineyards often containing the lowest observed SOC levels in a landscape. Mitigation through alternative management can result in higher SOC levels than conventional management, but the latter is likely to be a fraction of the C loss from initial cultivation. However, the majority of relevant studies relied on shallow standardized sampling depths and other protocols that have been demonstrated to lead to miscalculations of existing SOC stocks. Novel sampling techniques and emerging research opportunities have the potential to revolutionize our understanding of this question and support scientifically sound carbon-based landscape management.