Simultaneous Loss of Soil Biodiversity and Functions along a Copper Contamination Gradient: When Soil Goes to Sleep
Simultaneous Loss of Soil Biodiversity and Functions along a Copper Contamination Gradient: When Soil Goes to Sleep
复制标题
土壤生物多样性和功能沿着铜污染梯度同时丧失：当土壤进入休眠状态时
DOI：
10.2136/sssaj2014.02.0052
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发表时间：
2014
影响因子：
2.9
通讯作者：
L. W. Jonge
中科院分区：
文献类型：
--
作者：
M. Naveed;P. Møldrup;E. Arthur;M. Holmstrup;M. Nicolaisen;M. Tuller;Lasantha Herath;S. Hamamoto;K. Kawamoto;T. Komatsu;H. Vogel;L. W. Jonge
生物多样性丧失对土壤功能的影响是通过实验室实验确定的，这些实验通常认为土壤生物群相互隔离，这种情况很少出现在田间土壤中。因此，我们对生物多样性和相关土壤功能的变化的了解是有限的。我们量化了一系列的土壤生物成分（植物，蚯蚓，线虫，细菌和真菌），以探索它们之间的相互作用，并表征它们对各种土壤功能（土壤生物的栖息地，空气和水的调节，以及养分和有机废物的回收利用）沿着一个传统的铜污染梯度的影响。增加铜浓度对植物生长和物种丰富度都有不利影响。地下土壤生物对Cu浓度的敏感性依次为蚯蚓>细菌>线虫>真菌。所观察到的土壤生物区系的损失对自然土壤生物扰动、团聚体形成和稳定、分解和矿化过程产生不利影响，因此导致土壤压实，孔隙分布窄，孔隙总体较小，空气和水的储存和流动受到限制，C、N和P循环受阻。土壤生物多样性和功能沿着Cu梯度的同步演化强调了土壤生命在控制生态系统服务中的关键作用。此外，结果表明，在110至800 mg总Cu kg−1的Cu浓度范围内，不同的土壤生物多样性和功能指标开始下降（损失10%）。
The impact of biodiversity loss on soil functions is well established via laboratory experiments that generally consider soil biota groups in isolation from each other, a condition rarely present in field soils. As a result, our knowledge about anthropogenic-induced changes in biodiversity and associated soil functions is limited. We quantified an array of soil biological constituents (plants, earthworms, nematodes, bacteria, and fungi) to explore their interactions and to characterize their influence on various soil functions (habitat for soil organisms, air and water regulation, and recycling of nutrients and organic waste) along a legacy Cu pollution gradient. Increasing Cu concentrations had a detrimental impact on both plant growth and species richness. Belowground soil biota showed similar responses, with their sensitivity to elevated Cu concentrations decreasing in the order: earthworms > bacteria > nematodes > fungi. The observed loss of soil biota adversely affected natural soil bioturbation, aggregate formation and stabilization, and decomposition and mineralization processes and therefore resulted in compacted soil with narrow pore size distributions and overall smaller pores, restricted air and water storage and flow, and impeded C, N, and P cycling. The simultaneous evolution of soil biodiversity and functions along the Cu gradient emphasized the key role of soil life in controlling ecosystem services. Furthermore, results indicated that different soil biodiversity and functional indicators started to decline (10% loss) within a Cu concentration range of 110 to 800 mg total Cu kg−1.
影响因子：
4
作者：
Miltner, Anja;Bombach, Petra;Kaestner, Matthias
通讯作者：
Kaestner, Matthias