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024 7 _ |a 10.1002/esp.5133
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024 7 _ |a 0197-9337
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024 7 _ |a 0360-1269
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024 7 _ |a 1096-9837
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024 7 _ |a 1931-8065
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024 7 _ |a 2128/29243
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037 _ _ |a FZJ-2021-04707
082 _ _ |a 910
100 1 _ |a Mohseni, Neda
|0 0000-0003-0691-9408
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|e Corresponding author
245 _ _ |a Variation in the rate of land subsidence induced by groundwater extraction and its effect on the response pattern of soil microbial communities
260 _ _ |a New York, NY [u.a.]
|c 2021
|b Wiley
336 7 _ |a article
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336 7 _ |a ARTICLE
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520 _ _ |a Excessive extraction of groundwater leads to (irreversible) changes in the physical soil properties, causing land subsidence associated with soil compaction to occur. Using a combined image processing and field approach, we examined: (1) how variation in the land subsidence rate induces different soil compaction degrees; and (2) the response patterns of microbial communities to such variations. By using Sentinel Synthetic Aperture Radar image processing, we selected three locations that exhibited different land subsidence rates, including high (HSR), moderate (MSR), and low (LSR). Then, soil sampling was undertaken within these representative locations. Indicators of soil compaction, including total porosity, air-filled porosity, water-filled porosity, and bulk density, were measured. The soil microbial community was determined using qPCR and sequencing. The highest and lowest values for bulk density were observed in the HSR–MSR and LSR zones, respectively. The greatest values of total porosity and macropore volume were displayed in the LSR zone compared to other zones. Bacterial abundance in the LSR zone was significantly greater than that in the HSR and MSR zones. The relative abundances of bacterial taxa indirectly demonstrated that the anaerobic phyla were significantly increased (by 10–13%), and the aerobic phyla decreased (by 30–40%) in the HSR zone compared to the LSR zone. This result demonstrates that the aerobes declined as larger volumes of the soil became more anaerobic. Indeed, the increased abundance of anaerobes was not able to compensate for the larger decrease in the abundance of aerobes. Our work showed that at the increased rates of land subsidence, the abundance distribution of the microbial community critically declined. These findings highlight the critical impacts of increasing the land subsidence rate on the emergence of high soil compaction degrees, which can significantly affect the resilience thresholds of the microbial communities in dryland soils.
536 _ _ |a 2173 - Agro-biogeosystems: controls, feedbacks and impact (POF4-217)
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588 _ _ |a Dataset connected to CrossRef, Journals: juser.fz-juelich.de
700 1 _ |a Bol, Roland
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773 _ _ |a 10.1002/esp.5133
|g Vol. 46, no. 10, p. 1898 - 1908
|0 PERI:(DE-600)1479188-2
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|p 1898 - 1908
|t Earth surface processes and landforms
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|y 2021
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856 4 _ |y Published on 2021-04-14. Available in OpenAccess from 2022-04-14.
|u https://juser.fz-juelich.de/record/902961/files/NedaESSRBmaintext.pdf
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|u https://juser.fz-juelich.de/record/902961/files/esp.5133.pdf
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