Tillage practice greatly influence the temporal variation in magnetic susceptibility in karst depression over the past 60 years
Tillage practices can greatly influence the temporal variation in soil erosion, deposition, and redistribution, and thus soil magnetic susceptibility (MS). In-depth investigation of the distribution characteristics of soil magnetic susceptibility (MS) is helpful to understand the dynamic process of...
Ausführliche Beschreibung
Gespeichert in:
| Autor*in: |
Li, Chengfang [verfasserIn] Duan, Liangxia [verfasserIn] Li, Zhenwei [verfasserIn] Xu, Xianli [verfasserIn] Wang, Kelin [verfasserIn] |
|---|
| Format: |
E-Artikel |
|---|---|
| Sprache: |
Englisch |
| Erschienen: |
2024 |
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| Schlagwörter: |
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| Übergeordnetes Werk: |
Enthalten in: Geoderma - Amsterdam [u.a.] : Elsevier Science, 1967, 442 |
|---|---|
| Übergeordnetes Werk: |
volume:442 |
| DOI / URN: |
10.1016/j.geoderma.2024.116797 |
|---|
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ELV067022030 |
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| 520 | |a Tillage practices can greatly influence the temporal variation in soil erosion, deposition, and redistribution, and thus soil magnetic susceptibility (MS). In-depth investigation of the distribution characteristics of soil magnetic susceptibility (MS) is helpful to understand the dynamic process of soil redistribution and environmental changes. With the aid of the 137Cs and 210Pbex deposition chronologies, the objective of this study is to investigate the historical changing pattern of MS in a karst depression, and to further evaluate the effects of soil properties, tillage practice, and soil erosion on the temporal variation in soil MS. With collecting representative soil profile samples from cropland and undisturbed bamboo forest land in the karst depression, the MS, soil particle distribution, nutrients, radionuclides and heavy metals were measured. The results showed that mass-specific low-frequency MS (χlf) was positively correlated with percentage frequency-dependent MS (χfd%) (P < 0.001), and the corrected χfd% was close to the saturation value (11 %) after removing the influence of the initial aeolian signal. The relationship between MS and soil properties is different under cropland and bamboo forest land. For undisturbed forestland, χlf and χfd% were both positively related to nutrients concentration (P < 0.001), but negatively related to heavy metal concentrations (P < 0.001). For the cropland with frequent tillage practices, χlf was positively related to total phosphorus (TP) and heavy metals concentration. Based on the identified MS deposition history, from 1949 to 2015, χlf and χfd% showed a significant increase at first and then tended to be stable, and were negatively related to sediment deposition rate (P < 0.001). This study emphasizes the pronounced influence of tillage practices and soil erosion on the temporal variation of soil MS, is helpful for targeted land management strategies in these environmentally vulnerable karst regions. | ||
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10.1016/j.geoderma.2024.116797 doi (DE-627)ELV067022030 (ELSEVIER)S0016-7061(24)00026-0 DE-627 ger DE-627 rda eng 550 910 VZ 38.60 bkl Li, Chengfang verfasserin aut Tillage practice greatly influence the temporal variation in magnetic susceptibility in karst depression over the past 60 years 2024 nicht spezifiziert zzz rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Tillage practices can greatly influence the temporal variation in soil erosion, deposition, and redistribution, and thus soil magnetic susceptibility (MS). In-depth investigation of the distribution characteristics of soil magnetic susceptibility (MS) is helpful to understand the dynamic process of soil redistribution and environmental changes. With the aid of the 137Cs and 210Pbex deposition chronologies, the objective of this study is to investigate the historical changing pattern of MS in a karst depression, and to further evaluate the effects of soil properties, tillage practice, and soil erosion on the temporal variation in soil MS. With collecting representative soil profile samples from cropland and undisturbed bamboo forest land in the karst depression, the MS, soil particle distribution, nutrients, radionuclides and heavy metals were measured. The results showed that mass-specific low-frequency MS (χlf) was positively correlated with percentage frequency-dependent MS (χfd%) (P < 0.001), and the corrected χfd% was close to the saturation value (11 %) after removing the influence of the initial aeolian signal. The relationship between MS and soil properties is different under cropland and bamboo forest land. For undisturbed forestland, χlf and χfd% were both positively related to nutrients concentration (P < 0.001), but negatively related to heavy metal concentrations (P < 0.001). For the cropland with frequent tillage practices, χlf was positively related to total phosphorus (TP) and heavy metals concentration. Based on the identified MS deposition history, from 1949 to 2015, χlf and χfd% showed a significant increase at first and then tended to be stable, and were negatively related to sediment deposition rate (P < 0.001). This study emphasizes the pronounced influence of tillage practices and soil erosion on the temporal variation of soil MS, is helpful for targeted land management strategies in these environmentally vulnerable karst regions. Soil erosion Magnetic susceptibility Tillage practice Sedimentation Karst ecosystems Duan, Liangxia verfasserin aut Li, Zhenwei verfasserin aut Xu, Xianli verfasserin aut Wang, Kelin verfasserin (orcid)0000-0001-8218-5368 aut Enthalten in Geoderma Amsterdam [u.a.] : Elsevier Science, 1967 442 Online-Ressource (DE-627)320414493 (DE-600)2001729-7 (DE-576)099603853 1872-6259 nnns volume:442 GBV_USEFLAG_U GBV_ELV SYSFLAG_U SSG-OPC-GGO GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_150 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_2004 GBV_ILN_2014 GBV_ILN_2336 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 38.60 Bodenkunde: Allgemeines Geowissenschaften VZ AR 442 |
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10.1016/j.geoderma.2024.116797 doi (DE-627)ELV067022030 (ELSEVIER)S0016-7061(24)00026-0 DE-627 ger DE-627 rda eng 550 910 VZ 38.60 bkl Li, Chengfang verfasserin aut Tillage practice greatly influence the temporal variation in magnetic susceptibility in karst depression over the past 60 years 2024 nicht spezifiziert zzz rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Tillage practices can greatly influence the temporal variation in soil erosion, deposition, and redistribution, and thus soil magnetic susceptibility (MS). In-depth investigation of the distribution characteristics of soil magnetic susceptibility (MS) is helpful to understand the dynamic process of soil redistribution and environmental changes. With the aid of the 137Cs and 210Pbex deposition chronologies, the objective of this study is to investigate the historical changing pattern of MS in a karst depression, and to further evaluate the effects of soil properties, tillage practice, and soil erosion on the temporal variation in soil MS. With collecting representative soil profile samples from cropland and undisturbed bamboo forest land in the karst depression, the MS, soil particle distribution, nutrients, radionuclides and heavy metals were measured. The results showed that mass-specific low-frequency MS (χlf) was positively correlated with percentage frequency-dependent MS (χfd%) (P < 0.001), and the corrected χfd% was close to the saturation value (11 %) after removing the influence of the initial aeolian signal. The relationship between MS and soil properties is different under cropland and bamboo forest land. For undisturbed forestland, χlf and χfd% were both positively related to nutrients concentration (P < 0.001), but negatively related to heavy metal concentrations (P < 0.001). For the cropland with frequent tillage practices, χlf was positively related to total phosphorus (TP) and heavy metals concentration. Based on the identified MS deposition history, from 1949 to 2015, χlf and χfd% showed a significant increase at first and then tended to be stable, and were negatively related to sediment deposition rate (P < 0.001). This study emphasizes the pronounced influence of tillage practices and soil erosion on the temporal variation of soil MS, is helpful for targeted land management strategies in these environmentally vulnerable karst regions. Soil erosion Magnetic susceptibility Tillage practice Sedimentation Karst ecosystems Duan, Liangxia verfasserin aut Li, Zhenwei verfasserin aut Xu, Xianli verfasserin aut Wang, Kelin verfasserin (orcid)0000-0001-8218-5368 aut Enthalten in Geoderma Amsterdam [u.a.] : Elsevier Science, 1967 442 Online-Ressource (DE-627)320414493 (DE-600)2001729-7 (DE-576)099603853 1872-6259 nnns volume:442 GBV_USEFLAG_U GBV_ELV SYSFLAG_U SSG-OPC-GGO GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_150 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_2004 GBV_ILN_2014 GBV_ILN_2336 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 38.60 Bodenkunde: Allgemeines Geowissenschaften VZ AR 442 |
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10.1016/j.geoderma.2024.116797 doi (DE-627)ELV067022030 (ELSEVIER)S0016-7061(24)00026-0 DE-627 ger DE-627 rda eng 550 910 VZ 38.60 bkl Li, Chengfang verfasserin aut Tillage practice greatly influence the temporal variation in magnetic susceptibility in karst depression over the past 60 years 2024 nicht spezifiziert zzz rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Tillage practices can greatly influence the temporal variation in soil erosion, deposition, and redistribution, and thus soil magnetic susceptibility (MS). In-depth investigation of the distribution characteristics of soil magnetic susceptibility (MS) is helpful to understand the dynamic process of soil redistribution and environmental changes. With the aid of the 137Cs and 210Pbex deposition chronologies, the objective of this study is to investigate the historical changing pattern of MS in a karst depression, and to further evaluate the effects of soil properties, tillage practice, and soil erosion on the temporal variation in soil MS. With collecting representative soil profile samples from cropland and undisturbed bamboo forest land in the karst depression, the MS, soil particle distribution, nutrients, radionuclides and heavy metals were measured. The results showed that mass-specific low-frequency MS (χlf) was positively correlated with percentage frequency-dependent MS (χfd%) (P < 0.001), and the corrected χfd% was close to the saturation value (11 %) after removing the influence of the initial aeolian signal. The relationship between MS and soil properties is different under cropland and bamboo forest land. For undisturbed forestland, χlf and χfd% were both positively related to nutrients concentration (P < 0.001), but negatively related to heavy metal concentrations (P < 0.001). For the cropland with frequent tillage practices, χlf was positively related to total phosphorus (TP) and heavy metals concentration. Based on the identified MS deposition history, from 1949 to 2015, χlf and χfd% showed a significant increase at first and then tended to be stable, and were negatively related to sediment deposition rate (P < 0.001). This study emphasizes the pronounced influence of tillage practices and soil erosion on the temporal variation of soil MS, is helpful for targeted land management strategies in these environmentally vulnerable karst regions. Soil erosion Magnetic susceptibility Tillage practice Sedimentation Karst ecosystems Duan, Liangxia verfasserin aut Li, Zhenwei verfasserin aut Xu, Xianli verfasserin aut Wang, Kelin verfasserin (orcid)0000-0001-8218-5368 aut Enthalten in Geoderma Amsterdam [u.a.] : Elsevier Science, 1967 442 Online-Ressource (DE-627)320414493 (DE-600)2001729-7 (DE-576)099603853 1872-6259 nnns volume:442 GBV_USEFLAG_U GBV_ELV SYSFLAG_U SSG-OPC-GGO GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_150 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_2004 GBV_ILN_2014 GBV_ILN_2336 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 38.60 Bodenkunde: Allgemeines Geowissenschaften VZ AR 442 |
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10.1016/j.geoderma.2024.116797 doi (DE-627)ELV067022030 (ELSEVIER)S0016-7061(24)00026-0 DE-627 ger DE-627 rda eng 550 910 VZ 38.60 bkl Li, Chengfang verfasserin aut Tillage practice greatly influence the temporal variation in magnetic susceptibility in karst depression over the past 60 years 2024 nicht spezifiziert zzz rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Tillage practices can greatly influence the temporal variation in soil erosion, deposition, and redistribution, and thus soil magnetic susceptibility (MS). In-depth investigation of the distribution characteristics of soil magnetic susceptibility (MS) is helpful to understand the dynamic process of soil redistribution and environmental changes. With the aid of the 137Cs and 210Pbex deposition chronologies, the objective of this study is to investigate the historical changing pattern of MS in a karst depression, and to further evaluate the effects of soil properties, tillage practice, and soil erosion on the temporal variation in soil MS. With collecting representative soil profile samples from cropland and undisturbed bamboo forest land in the karst depression, the MS, soil particle distribution, nutrients, radionuclides and heavy metals were measured. The results showed that mass-specific low-frequency MS (χlf) was positively correlated with percentage frequency-dependent MS (χfd%) (P < 0.001), and the corrected χfd% was close to the saturation value (11 %) after removing the influence of the initial aeolian signal. The relationship between MS and soil properties is different under cropland and bamboo forest land. For undisturbed forestland, χlf and χfd% were both positively related to nutrients concentration (P < 0.001), but negatively related to heavy metal concentrations (P < 0.001). For the cropland with frequent tillage practices, χlf was positively related to total phosphorus (TP) and heavy metals concentration. Based on the identified MS deposition history, from 1949 to 2015, χlf and χfd% showed a significant increase at first and then tended to be stable, and were negatively related to sediment deposition rate (P < 0.001). This study emphasizes the pronounced influence of tillage practices and soil erosion on the temporal variation of soil MS, is helpful for targeted land management strategies in these environmentally vulnerable karst regions. Soil erosion Magnetic susceptibility Tillage practice Sedimentation Karst ecosystems Duan, Liangxia verfasserin aut Li, Zhenwei verfasserin aut Xu, Xianli verfasserin aut Wang, Kelin verfasserin (orcid)0000-0001-8218-5368 aut Enthalten in Geoderma Amsterdam [u.a.] : Elsevier Science, 1967 442 Online-Ressource (DE-627)320414493 (DE-600)2001729-7 (DE-576)099603853 1872-6259 nnns volume:442 GBV_USEFLAG_U GBV_ELV SYSFLAG_U SSG-OPC-GGO GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_150 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_2004 GBV_ILN_2014 GBV_ILN_2336 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 38.60 Bodenkunde: Allgemeines Geowissenschaften VZ AR 442 |
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10.1016/j.geoderma.2024.116797 doi (DE-627)ELV067022030 (ELSEVIER)S0016-7061(24)00026-0 DE-627 ger DE-627 rda eng 550 910 VZ 38.60 bkl Li, Chengfang verfasserin aut Tillage practice greatly influence the temporal variation in magnetic susceptibility in karst depression over the past 60 years 2024 nicht spezifiziert zzz rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Tillage practices can greatly influence the temporal variation in soil erosion, deposition, and redistribution, and thus soil magnetic susceptibility (MS). In-depth investigation of the distribution characteristics of soil magnetic susceptibility (MS) is helpful to understand the dynamic process of soil redistribution and environmental changes. With the aid of the 137Cs and 210Pbex deposition chronologies, the objective of this study is to investigate the historical changing pattern of MS in a karst depression, and to further evaluate the effects of soil properties, tillage practice, and soil erosion on the temporal variation in soil MS. With collecting representative soil profile samples from cropland and undisturbed bamboo forest land in the karst depression, the MS, soil particle distribution, nutrients, radionuclides and heavy metals were measured. The results showed that mass-specific low-frequency MS (χlf) was positively correlated with percentage frequency-dependent MS (χfd%) (P < 0.001), and the corrected χfd% was close to the saturation value (11 %) after removing the influence of the initial aeolian signal. The relationship between MS and soil properties is different under cropland and bamboo forest land. For undisturbed forestland, χlf and χfd% were both positively related to nutrients concentration (P < 0.001), but negatively related to heavy metal concentrations (P < 0.001). For the cropland with frequent tillage practices, χlf was positively related to total phosphorus (TP) and heavy metals concentration. Based on the identified MS deposition history, from 1949 to 2015, χlf and χfd% showed a significant increase at first and then tended to be stable, and were negatively related to sediment deposition rate (P < 0.001). This study emphasizes the pronounced influence of tillage practices and soil erosion on the temporal variation of soil MS, is helpful for targeted land management strategies in these environmentally vulnerable karst regions. Soil erosion Magnetic susceptibility Tillage practice Sedimentation Karst ecosystems Duan, Liangxia verfasserin aut Li, Zhenwei verfasserin aut Xu, Xianli verfasserin aut Wang, Kelin verfasserin (orcid)0000-0001-8218-5368 aut Enthalten in Geoderma Amsterdam [u.a.] : Elsevier Science, 1967 442 Online-Ressource (DE-627)320414493 (DE-600)2001729-7 (DE-576)099603853 1872-6259 nnns volume:442 GBV_USEFLAG_U GBV_ELV SYSFLAG_U SSG-OPC-GGO GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_150 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_2004 GBV_ILN_2014 GBV_ILN_2336 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 38.60 Bodenkunde: Allgemeines Geowissenschaften VZ AR 442 |
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Li, Chengfang |
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Li, Chengfang ddc 550 bkl 38.60 misc Soil erosion misc Magnetic susceptibility misc Tillage practice misc Sedimentation misc Karst ecosystems Tillage practice greatly influence the temporal variation in magnetic susceptibility in karst depression over the past 60 years |
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550 910 VZ 38.60 bkl Tillage practice greatly influence the temporal variation in magnetic susceptibility in karst depression over the past 60 years Soil erosion Magnetic susceptibility Tillage practice Sedimentation Karst ecosystems |
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ddc 550 bkl 38.60 misc Soil erosion misc Magnetic susceptibility misc Tillage practice misc Sedimentation misc Karst ecosystems |
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ddc 550 bkl 38.60 misc Soil erosion misc Magnetic susceptibility misc Tillage practice misc Sedimentation misc Karst ecosystems |
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tillage practice greatly influence the temporal variation in magnetic susceptibility in karst depression over the past 60 years |
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Tillage practice greatly influence the temporal variation in magnetic susceptibility in karst depression over the past 60 years |
| abstract |
Tillage practices can greatly influence the temporal variation in soil erosion, deposition, and redistribution, and thus soil magnetic susceptibility (MS). In-depth investigation of the distribution characteristics of soil magnetic susceptibility (MS) is helpful to understand the dynamic process of soil redistribution and environmental changes. With the aid of the 137Cs and 210Pbex deposition chronologies, the objective of this study is to investigate the historical changing pattern of MS in a karst depression, and to further evaluate the effects of soil properties, tillage practice, and soil erosion on the temporal variation in soil MS. With collecting representative soil profile samples from cropland and undisturbed bamboo forest land in the karst depression, the MS, soil particle distribution, nutrients, radionuclides and heavy metals were measured. The results showed that mass-specific low-frequency MS (χlf) was positively correlated with percentage frequency-dependent MS (χfd%) (P < 0.001), and the corrected χfd% was close to the saturation value (11 %) after removing the influence of the initial aeolian signal. The relationship between MS and soil properties is different under cropland and bamboo forest land. For undisturbed forestland, χlf and χfd% were both positively related to nutrients concentration (P < 0.001), but negatively related to heavy metal concentrations (P < 0.001). For the cropland with frequent tillage practices, χlf was positively related to total phosphorus (TP) and heavy metals concentration. Based on the identified MS deposition history, from 1949 to 2015, χlf and χfd% showed a significant increase at first and then tended to be stable, and were negatively related to sediment deposition rate (P < 0.001). This study emphasizes the pronounced influence of tillage practices and soil erosion on the temporal variation of soil MS, is helpful for targeted land management strategies in these environmentally vulnerable karst regions. |
| abstractGer |
Tillage practices can greatly influence the temporal variation in soil erosion, deposition, and redistribution, and thus soil magnetic susceptibility (MS). In-depth investigation of the distribution characteristics of soil magnetic susceptibility (MS) is helpful to understand the dynamic process of soil redistribution and environmental changes. With the aid of the 137Cs and 210Pbex deposition chronologies, the objective of this study is to investigate the historical changing pattern of MS in a karst depression, and to further evaluate the effects of soil properties, tillage practice, and soil erosion on the temporal variation in soil MS. With collecting representative soil profile samples from cropland and undisturbed bamboo forest land in the karst depression, the MS, soil particle distribution, nutrients, radionuclides and heavy metals were measured. The results showed that mass-specific low-frequency MS (χlf) was positively correlated with percentage frequency-dependent MS (χfd%) (P < 0.001), and the corrected χfd% was close to the saturation value (11 %) after removing the influence of the initial aeolian signal. The relationship between MS and soil properties is different under cropland and bamboo forest land. For undisturbed forestland, χlf and χfd% were both positively related to nutrients concentration (P < 0.001), but negatively related to heavy metal concentrations (P < 0.001). For the cropland with frequent tillage practices, χlf was positively related to total phosphorus (TP) and heavy metals concentration. Based on the identified MS deposition history, from 1949 to 2015, χlf and χfd% showed a significant increase at first and then tended to be stable, and were negatively related to sediment deposition rate (P < 0.001). This study emphasizes the pronounced influence of tillage practices and soil erosion on the temporal variation of soil MS, is helpful for targeted land management strategies in these environmentally vulnerable karst regions. |
| abstract_unstemmed |
Tillage practices can greatly influence the temporal variation in soil erosion, deposition, and redistribution, and thus soil magnetic susceptibility (MS). In-depth investigation of the distribution characteristics of soil magnetic susceptibility (MS) is helpful to understand the dynamic process of soil redistribution and environmental changes. With the aid of the 137Cs and 210Pbex deposition chronologies, the objective of this study is to investigate the historical changing pattern of MS in a karst depression, and to further evaluate the effects of soil properties, tillage practice, and soil erosion on the temporal variation in soil MS. With collecting representative soil profile samples from cropland and undisturbed bamboo forest land in the karst depression, the MS, soil particle distribution, nutrients, radionuclides and heavy metals were measured. The results showed that mass-specific low-frequency MS (χlf) was positively correlated with percentage frequency-dependent MS (χfd%) (P < 0.001), and the corrected χfd% was close to the saturation value (11 %) after removing the influence of the initial aeolian signal. The relationship between MS and soil properties is different under cropland and bamboo forest land. For undisturbed forestland, χlf and χfd% were both positively related to nutrients concentration (P < 0.001), but negatively related to heavy metal concentrations (P < 0.001). For the cropland with frequent tillage practices, χlf was positively related to total phosphorus (TP) and heavy metals concentration. Based on the identified MS deposition history, from 1949 to 2015, χlf and χfd% showed a significant increase at first and then tended to be stable, and were negatively related to sediment deposition rate (P < 0.001). This study emphasizes the pronounced influence of tillage practices and soil erosion on the temporal variation of soil MS, is helpful for targeted land management strategies in these environmentally vulnerable karst regions. |
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In-depth investigation of the distribution characteristics of soil magnetic susceptibility (MS) is helpful to understand the dynamic process of soil redistribution and environmental changes. With the aid of the 137Cs and 210Pbex deposition chronologies, the objective of this study is to investigate the historical changing pattern of MS in a karst depression, and to further evaluate the effects of soil properties, tillage practice, and soil erosion on the temporal variation in soil MS. With collecting representative soil profile samples from cropland and undisturbed bamboo forest land in the karst depression, the MS, soil particle distribution, nutrients, radionuclides and heavy metals were measured. The results showed that mass-specific low-frequency MS (χlf) was positively correlated with percentage frequency-dependent MS (χfd%) (P < 0.001), and the corrected χfd% was close to the saturation value (11 %) after removing the influence of the initial aeolian signal. The relationship between MS and soil properties is different under cropland and bamboo forest land. For undisturbed forestland, χlf and χfd% were both positively related to nutrients concentration (P < 0.001), but negatively related to heavy metal concentrations (P < 0.001). For the cropland with frequent tillage practices, χlf was positively related to total phosphorus (TP) and heavy metals concentration. Based on the identified MS deposition history, from 1949 to 2015, χlf and χfd% showed a significant increase at first and then tended to be stable, and were negatively related to sediment deposition rate (P < 0.001). This study emphasizes the pronounced influence of tillage practices and soil erosion on the temporal variation of soil MS, is helpful for targeted land management strategies in these environmentally vulnerable karst regions.</subfield></datafield><datafield tag="650" ind1=" " ind2="4"><subfield code="a">Soil erosion</subfield></datafield><datafield tag="650" ind1=" " ind2="4"><subfield code="a">Magnetic susceptibility</subfield></datafield><datafield tag="650" ind1=" " ind2="4"><subfield code="a">Tillage practice</subfield></datafield><datafield tag="650" ind1=" " ind2="4"><subfield code="a">Sedimentation</subfield></datafield><datafield tag="650" ind1=" " ind2="4"><subfield code="a">Karst ecosystems</subfield></datafield><datafield tag="700" ind1="1" ind2=" "><subfield code="a">Duan, Liangxia</subfield><subfield code="e">verfasserin</subfield><subfield code="4">aut</subfield></datafield><datafield tag="700" ind1="1" ind2=" "><subfield code="a">Li, Zhenwei</subfield><subfield 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