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DOI | 10.1007/s10661-019-7435-y |
Twenty-five years of observations of soil organic carbon in Swiss croplands showing stability overall but with some divergent trends | |
Gubler, Andreas; Waechter, Daniel; Schwab, Peter; Mueller, Michael; Keller, Armin | |
发表日期 | 2019 |
ISSN | 0167-6369 |
EISSN | 1573-2959 |
卷号 | 191期号:5 |
英文摘要 | The temporal evolution of soil organic carbon (SOC) is of major importance given its status as a key parameter in many soil functions. Furthermore, soils constitute an important reservoir of carbon in our environment. In light of climate change, consistent SOC data over extended periods in combination with information on agricultural management are much required, but still scarce. We report SOC changes in the topsoil (0-20 cm) of Swiss cropland measured at well-defined monitoring sites resampled every 5 years from 1990 to 2014 by the Swiss Soil Monitoring Network NABO using consistent sampling protocols and quality assurance. Data on agricultural management practices were retrieved from farmers. Overall, SOC remained stable for the ensemble of monitoring sites, although increasing and decreasing trends were observed for individual sites, ranging from -11 to +16% relative change per decade. Changes in the agricultural management of cropland triggered substantial changes in SOC contents for some sites. Moreover, sites with a low ratio of SOC/clay (< 0.1) generally showed more positive trends than sites with higher ratios. We presume that SOC was either at or near steady state, given the consistency of management practices over the last few decades. Finally, our study provides insights into the uncertainties related to (real-world) SOC monitoring and underlines the relevance of short-term SOC variations that could hamper the detection of long-term trends. The minimum detectable change (MDC) by the applied monitoring scheme is estimated at 0.35% per year, in relative terms. |
WOS研究方向 | Environmental Sciences & Ecology |
来源期刊 | ENVIRONMENTAL MONITORING AND ASSESSMENT |
文献类型 | 期刊论文 |
条目标识符 | http://gcip.llas.ac.cn/handle/2XKMVOVA/97397 |
作者单位 | Agroscope, Swiss Soil Monitoring Network NABO, Reckenholzstr 191, CH-8046 Zurich, Switzerland |
推荐引用方式 GB/T 7714 | Gubler, Andreas,Waechter, Daniel,Schwab, Peter,et al. Twenty-five years of observations of soil organic carbon in Swiss croplands showing stability overall but with some divergent trends[J],2019,191(5). |
APA | Gubler, Andreas,Waechter, Daniel,Schwab, Peter,Mueller, Michael,&Keller, Armin.(2019).Twenty-five years of observations of soil organic carbon in Swiss croplands showing stability overall but with some divergent trends.ENVIRONMENTAL MONITORING AND ASSESSMENT,191(5). |
MLA | Gubler, Andreas,et al."Twenty-five years of observations of soil organic carbon in Swiss croplands showing stability overall but with some divergent trends".ENVIRONMENTAL MONITORING AND ASSESSMENT 191.5(2019). |
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