Quantitative evaluation of soil ion content using an imaginary part model of soil dielectric constant
ABSTRACT: An imaginary part model of soil dielectric constant for predicting the soil salinity status was developed based on a series of relations between dielectric imaginary part and soil bulk conductivity, soil bulk conductivity and soil solution electrical conductivity, and soil solution electri...
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| Autor*in: |
Wei Hu [verfasserIn] Lei Zhang [verfasserIn] Binglin Chen [verfasserIn] Zhiguo Zhou [verfasserIn] |
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| Format: |
E-Artikel |
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| Sprache: |
Englisch ; Spanisch ; Portugiesisch |
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In: Scientia Agricola - Universidade de São Paulo, 2004 |
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| Links: |
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| DOI / URN: |
10.1590/1678-992x-2017-0431 |
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| Katalog-ID: |
DOAJ048457574 |
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| 520 | |a ABSTRACT: An imaginary part model of soil dielectric constant for predicting the soil salinity status was developed based on a series of relations between dielectric imaginary part and soil bulk conductivity, soil bulk conductivity and soil solution electrical conductivity, and soil solution electrical conductivity and ion contents in soil using pot trials with different soil salinity levels in the 2008 growing season. This model was calibrated and tested with data from the 2009 growing season. The results showed that the inverted values of the total concentration of salt (Sc), Cl−, and Ca2+ at low frequencies (P-band of microwave observations) from the imaginary part model fitted well with the observed values, since root mean square errors (RMSEs) were 0.34 g kg−1, 0.09 g kg−1 and 0.13 g kg−1, respectively, but the inversion effect of Na+ was relatively poor. Moreover, the Sc, Cl−, and Na+ could be well inverted at high frequencies (C-band of microwave observations), since RMSEs were minor, with values of 0.25 g kg−1, 0.02 g kg−1, and 0.15 g kg−1, respectively. The close fit between the observed and inverted values indicated that the present models could be used to estimate soil ion content quickly and reliably under different saline conditions, which, when suitable measures are taken, can be used to reduce the effects of soil salinity on crop growth. | ||
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| 700 | 0 | |a Zhiguo Zhou |e verfasserin |4 aut | |
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10.1590/1678-992x-2017-0431 doi (DE-627)DOAJ048457574 (DE-599)DOAJe9b359ba6dd64ec881c91a96edd19f9e DE-627 ger DE-627 rakwb eng spa por S1-972 Wei Hu verfasserin aut Quantitative evaluation of soil ion content using an imaginary part model of soil dielectric constant Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier ABSTRACT: An imaginary part model of soil dielectric constant for predicting the soil salinity status was developed based on a series of relations between dielectric imaginary part and soil bulk conductivity, soil bulk conductivity and soil solution electrical conductivity, and soil solution electrical conductivity and ion contents in soil using pot trials with different soil salinity levels in the 2008 growing season. This model was calibrated and tested with data from the 2009 growing season. The results showed that the inverted values of the total concentration of salt (Sc), Cl−, and Ca2+ at low frequencies (P-band of microwave observations) from the imaginary part model fitted well with the observed values, since root mean square errors (RMSEs) were 0.34 g kg−1, 0.09 g kg−1 and 0.13 g kg−1, respectively, but the inversion effect of Na+ was relatively poor. Moreover, the Sc, Cl−, and Na+ could be well inverted at high frequencies (C-band of microwave observations), since RMSEs were minor, with values of 0.25 g kg−1, 0.02 g kg−1, and 0.15 g kg−1, respectively. The close fit between the observed and inverted values indicated that the present models could be used to estimate soil ion content quickly and reliably under different saline conditions, which, when suitable measures are taken, can be used to reduce the effects of soil salinity on crop growth. microwave sensing prediction soil salinity Agriculture (General) Lei Zhang verfasserin aut Binglin Chen verfasserin aut Zhiguo Zhou verfasserin aut In Scientia Agricola Universidade de São Paulo, 2004 (DE-627)320569705 (DE-600)2016347-2 1678992X nnns https://doi.org/10.1590/1678-992x-2017-0431 kostenfrei https://doaj.org/article/e9b359ba6dd64ec881c91a96edd19f9e kostenfrei http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162019001400299&lng=en&tlng=en kostenfrei https://doaj.org/toc/1678-992X Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ AR |
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10.1590/1678-992x-2017-0431 doi (DE-627)DOAJ048457574 (DE-599)DOAJe9b359ba6dd64ec881c91a96edd19f9e DE-627 ger DE-627 rakwb eng spa por S1-972 Wei Hu verfasserin aut Quantitative evaluation of soil ion content using an imaginary part model of soil dielectric constant Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier ABSTRACT: An imaginary part model of soil dielectric constant for predicting the soil salinity status was developed based on a series of relations between dielectric imaginary part and soil bulk conductivity, soil bulk conductivity and soil solution electrical conductivity, and soil solution electrical conductivity and ion contents in soil using pot trials with different soil salinity levels in the 2008 growing season. This model was calibrated and tested with data from the 2009 growing season. The results showed that the inverted values of the total concentration of salt (Sc), Cl−, and Ca2+ at low frequencies (P-band of microwave observations) from the imaginary part model fitted well with the observed values, since root mean square errors (RMSEs) were 0.34 g kg−1, 0.09 g kg−1 and 0.13 g kg−1, respectively, but the inversion effect of Na+ was relatively poor. Moreover, the Sc, Cl−, and Na+ could be well inverted at high frequencies (C-band of microwave observations), since RMSEs were minor, with values of 0.25 g kg−1, 0.02 g kg−1, and 0.15 g kg−1, respectively. The close fit between the observed and inverted values indicated that the present models could be used to estimate soil ion content quickly and reliably under different saline conditions, which, when suitable measures are taken, can be used to reduce the effects of soil salinity on crop growth. microwave sensing prediction soil salinity Agriculture (General) Lei Zhang verfasserin aut Binglin Chen verfasserin aut Zhiguo Zhou verfasserin aut In Scientia Agricola Universidade de São Paulo, 2004 (DE-627)320569705 (DE-600)2016347-2 1678992X nnns https://doi.org/10.1590/1678-992x-2017-0431 kostenfrei https://doaj.org/article/e9b359ba6dd64ec881c91a96edd19f9e kostenfrei http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162019001400299&lng=en&tlng=en kostenfrei https://doaj.org/toc/1678-992X Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ AR |
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10.1590/1678-992x-2017-0431 doi (DE-627)DOAJ048457574 (DE-599)DOAJe9b359ba6dd64ec881c91a96edd19f9e DE-627 ger DE-627 rakwb eng spa por S1-972 Wei Hu verfasserin aut Quantitative evaluation of soil ion content using an imaginary part model of soil dielectric constant Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier ABSTRACT: An imaginary part model of soil dielectric constant for predicting the soil salinity status was developed based on a series of relations between dielectric imaginary part and soil bulk conductivity, soil bulk conductivity and soil solution electrical conductivity, and soil solution electrical conductivity and ion contents in soil using pot trials with different soil salinity levels in the 2008 growing season. This model was calibrated and tested with data from the 2009 growing season. The results showed that the inverted values of the total concentration of salt (Sc), Cl−, and Ca2+ at low frequencies (P-band of microwave observations) from the imaginary part model fitted well with the observed values, since root mean square errors (RMSEs) were 0.34 g kg−1, 0.09 g kg−1 and 0.13 g kg−1, respectively, but the inversion effect of Na+ was relatively poor. Moreover, the Sc, Cl−, and Na+ could be well inverted at high frequencies (C-band of microwave observations), since RMSEs were minor, with values of 0.25 g kg−1, 0.02 g kg−1, and 0.15 g kg−1, respectively. The close fit between the observed and inverted values indicated that the present models could be used to estimate soil ion content quickly and reliably under different saline conditions, which, when suitable measures are taken, can be used to reduce the effects of soil salinity on crop growth. microwave sensing prediction soil salinity Agriculture (General) Lei Zhang verfasserin aut Binglin Chen verfasserin aut Zhiguo Zhou verfasserin aut In Scientia Agricola Universidade de São Paulo, 2004 (DE-627)320569705 (DE-600)2016347-2 1678992X nnns https://doi.org/10.1590/1678-992x-2017-0431 kostenfrei https://doaj.org/article/e9b359ba6dd64ec881c91a96edd19f9e kostenfrei http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162019001400299&lng=en&tlng=en kostenfrei https://doaj.org/toc/1678-992X Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ AR |
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10.1590/1678-992x-2017-0431 doi (DE-627)DOAJ048457574 (DE-599)DOAJe9b359ba6dd64ec881c91a96edd19f9e DE-627 ger DE-627 rakwb eng spa por S1-972 Wei Hu verfasserin aut Quantitative evaluation of soil ion content using an imaginary part model of soil dielectric constant Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier ABSTRACT: An imaginary part model of soil dielectric constant for predicting the soil salinity status was developed based on a series of relations between dielectric imaginary part and soil bulk conductivity, soil bulk conductivity and soil solution electrical conductivity, and soil solution electrical conductivity and ion contents in soil using pot trials with different soil salinity levels in the 2008 growing season. This model was calibrated and tested with data from the 2009 growing season. The results showed that the inverted values of the total concentration of salt (Sc), Cl−, and Ca2+ at low frequencies (P-band of microwave observations) from the imaginary part model fitted well with the observed values, since root mean square errors (RMSEs) were 0.34 g kg−1, 0.09 g kg−1 and 0.13 g kg−1, respectively, but the inversion effect of Na+ was relatively poor. Moreover, the Sc, Cl−, and Na+ could be well inverted at high frequencies (C-band of microwave observations), since RMSEs were minor, with values of 0.25 g kg−1, 0.02 g kg−1, and 0.15 g kg−1, respectively. The close fit between the observed and inverted values indicated that the present models could be used to estimate soil ion content quickly and reliably under different saline conditions, which, when suitable measures are taken, can be used to reduce the effects of soil salinity on crop growth. microwave sensing prediction soil salinity Agriculture (General) Lei Zhang verfasserin aut Binglin Chen verfasserin aut Zhiguo Zhou verfasserin aut In Scientia Agricola Universidade de São Paulo, 2004 (DE-627)320569705 (DE-600)2016347-2 1678992X nnns https://doi.org/10.1590/1678-992x-2017-0431 kostenfrei https://doaj.org/article/e9b359ba6dd64ec881c91a96edd19f9e kostenfrei http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162019001400299&lng=en&tlng=en kostenfrei https://doaj.org/toc/1678-992X Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ AR |
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10.1590/1678-992x-2017-0431 doi (DE-627)DOAJ048457574 (DE-599)DOAJe9b359ba6dd64ec881c91a96edd19f9e DE-627 ger DE-627 rakwb eng spa por S1-972 Wei Hu verfasserin aut Quantitative evaluation of soil ion content using an imaginary part model of soil dielectric constant Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier ABSTRACT: An imaginary part model of soil dielectric constant for predicting the soil salinity status was developed based on a series of relations between dielectric imaginary part and soil bulk conductivity, soil bulk conductivity and soil solution electrical conductivity, and soil solution electrical conductivity and ion contents in soil using pot trials with different soil salinity levels in the 2008 growing season. This model was calibrated and tested with data from the 2009 growing season. The results showed that the inverted values of the total concentration of salt (Sc), Cl−, and Ca2+ at low frequencies (P-band of microwave observations) from the imaginary part model fitted well with the observed values, since root mean square errors (RMSEs) were 0.34 g kg−1, 0.09 g kg−1 and 0.13 g kg−1, respectively, but the inversion effect of Na+ was relatively poor. Moreover, the Sc, Cl−, and Na+ could be well inverted at high frequencies (C-band of microwave observations), since RMSEs were minor, with values of 0.25 g kg−1, 0.02 g kg−1, and 0.15 g kg−1, respectively. The close fit between the observed and inverted values indicated that the present models could be used to estimate soil ion content quickly and reliably under different saline conditions, which, when suitable measures are taken, can be used to reduce the effects of soil salinity on crop growth. microwave sensing prediction soil salinity Agriculture (General) Lei Zhang verfasserin aut Binglin Chen verfasserin aut Zhiguo Zhou verfasserin aut In Scientia Agricola Universidade de São Paulo, 2004 (DE-627)320569705 (DE-600)2016347-2 1678992X nnns https://doi.org/10.1590/1678-992x-2017-0431 kostenfrei https://doaj.org/article/e9b359ba6dd64ec881c91a96edd19f9e kostenfrei http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162019001400299&lng=en&tlng=en kostenfrei https://doaj.org/toc/1678-992X Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ AR |
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Quantitative evaluation of soil ion content using an imaginary part model of soil dielectric constant |
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ABSTRACT: An imaginary part model of soil dielectric constant for predicting the soil salinity status was developed based on a series of relations between dielectric imaginary part and soil bulk conductivity, soil bulk conductivity and soil solution electrical conductivity, and soil solution electrical conductivity and ion contents in soil using pot trials with different soil salinity levels in the 2008 growing season. This model was calibrated and tested with data from the 2009 growing season. The results showed that the inverted values of the total concentration of salt (Sc), Cl−, and Ca2+ at low frequencies (P-band of microwave observations) from the imaginary part model fitted well with the observed values, since root mean square errors (RMSEs) were 0.34 g kg−1, 0.09 g kg−1 and 0.13 g kg−1, respectively, but the inversion effect of Na+ was relatively poor. Moreover, the Sc, Cl−, and Na+ could be well inverted at high frequencies (C-band of microwave observations), since RMSEs were minor, with values of 0.25 g kg−1, 0.02 g kg−1, and 0.15 g kg−1, respectively. The close fit between the observed and inverted values indicated that the present models could be used to estimate soil ion content quickly and reliably under different saline conditions, which, when suitable measures are taken, can be used to reduce the effects of soil salinity on crop growth. |
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ABSTRACT: An imaginary part model of soil dielectric constant for predicting the soil salinity status was developed based on a series of relations between dielectric imaginary part and soil bulk conductivity, soil bulk conductivity and soil solution electrical conductivity, and soil solution electrical conductivity and ion contents in soil using pot trials with different soil salinity levels in the 2008 growing season. This model was calibrated and tested with data from the 2009 growing season. The results showed that the inverted values of the total concentration of salt (Sc), Cl−, and Ca2+ at low frequencies (P-band of microwave observations) from the imaginary part model fitted well with the observed values, since root mean square errors (RMSEs) were 0.34 g kg−1, 0.09 g kg−1 and 0.13 g kg−1, respectively, but the inversion effect of Na+ was relatively poor. Moreover, the Sc, Cl−, and Na+ could be well inverted at high frequencies (C-band of microwave observations), since RMSEs were minor, with values of 0.25 g kg−1, 0.02 g kg−1, and 0.15 g kg−1, respectively. The close fit between the observed and inverted values indicated that the present models could be used to estimate soil ion content quickly and reliably under different saline conditions, which, when suitable measures are taken, can be used to reduce the effects of soil salinity on crop growth. |
| abstract_unstemmed |
ABSTRACT: An imaginary part model of soil dielectric constant for predicting the soil salinity status was developed based on a series of relations between dielectric imaginary part and soil bulk conductivity, soil bulk conductivity and soil solution electrical conductivity, and soil solution electrical conductivity and ion contents in soil using pot trials with different soil salinity levels in the 2008 growing season. This model was calibrated and tested with data from the 2009 growing season. The results showed that the inverted values of the total concentration of salt (Sc), Cl−, and Ca2+ at low frequencies (P-band of microwave observations) from the imaginary part model fitted well with the observed values, since root mean square errors (RMSEs) were 0.34 g kg−1, 0.09 g kg−1 and 0.13 g kg−1, respectively, but the inversion effect of Na+ was relatively poor. Moreover, the Sc, Cl−, and Na+ could be well inverted at high frequencies (C-band of microwave observations), since RMSEs were minor, with values of 0.25 g kg−1, 0.02 g kg−1, and 0.15 g kg−1, respectively. The close fit between the observed and inverted values indicated that the present models could be used to estimate soil ion content quickly and reliably under different saline conditions, which, when suitable measures are taken, can be used to reduce the effects of soil salinity on crop growth. |
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https://doi.org/10.1590/1678-992x-2017-0431 https://doaj.org/article/e9b359ba6dd64ec881c91a96edd19f9e http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162019001400299&lng=en&tlng=en https://doaj.org/toc/1678-992X |
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Lei Zhang Binglin Chen Zhiguo Zhou |
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2024-07-03T17:53:27.543Z |
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