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<p>Enhancing soil quality in the marshland of the coastal region in Bangladesh, it is essential to gain a deeper understanding of how soil series and the timing of sampling affect soil properties. This study involved analyzing topsoil samples (0–20&#xa0;cm depth) collected at different times throughout the year to evaluate soil quality indices. Physico-chemical parameters such as soil texture, density, porosity, infiltration rate, organic carbon (OC), pH, electrical conductivity (EC), phosphorus (P), nitrogen (N), calcium (Ca), potassium (K), magnesium (Mg), sulfur (S), sodium (Na), and trace elements i.e., iron (Fe), manganese (Mn), zinc (Zn), chromium (Cr), nickel (Ni), copper (Cu), lead (Pb), arsenic (As), and cadmium (Cd) were analyzed to evaluate the overall soil quality in the coastal regions of Amtali and Kalapara Upazila, Bangladesh. Soil from the Jhalokathi series was sandy loam, whereas Ramgati and Barisal soil series fall in the clay loam texture. The mean concentrations of P, N, S, K, Ca, Na, and Mg were 0.006–0.009%, 0.071–0.086%, 0.014–0.036%, 4.10–6.23 Cmol kg<sup>−1</sup>, 3.80–6.60 Cmol kg<sup>−1</sup>, 5.54–10.8 Cmol kg<sup>−1</sup>, and 7.72–10.3 Cmol kg<sup>−1</sup>, respectively. Distinct variations were observed among the soil series for P, S, K, Ca, Na, and Mg. The average value of trace elements was observed as 39,024, 321.3, 92.9, 48.7, 28.9, 22.6, 13.7, 4.78, and 1.93&#xa0;mg kg<sup>−1</sup>, respectively, for Fe, Mn, Zn, Cr, Ni, Cu, Pb, As, and Cd. Principal component analysis (PCA) suggested that OC, EC, pH, N, P, K, Na, As, Cd, Pb, and Ni were the key soil health indicators for the study’s soil quality index (SQI) assessment. The Barisal soil series had the highest SQI. The study highlighted that the seasonal variations had a potential influence on soil properties. These insights pave the way for developing targeted management and mitigation strategies to improve soil quality in the future.</p>

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Marshland soil quality assessment in a developing country: a preliminary study

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2026年7月28日

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  • Tusar Kanti Roy,
  • Md. Saiful Islam,
  • Zulhilmi Ismail,
  • Abubakr M. Idris

摘要

Enhancing soil quality in the marshland of the coastal region in Bangladesh, it is essential to gain a deeper understanding of how soil series and the timing of sampling affect soil properties. This study involved analyzing topsoil samples (0–20 cm depth) collected at different times throughout the year to evaluate soil quality indices. Physico-chemical parameters such as soil texture, density, porosity, infiltration rate, organic carbon (OC), pH, electrical conductivity (EC), phosphorus (P), nitrogen (N), calcium (Ca), potassium (K), magnesium (Mg), sulfur (S), sodium (Na), and trace elements i.e., iron (Fe), manganese (Mn), zinc (Zn), chromium (Cr), nickel (Ni), copper (Cu), lead (Pb), arsenic (As), and cadmium (Cd) were analyzed to evaluate the overall soil quality in the coastal regions of Amtali and Kalapara Upazila, Bangladesh. Soil from the Jhalokathi series was sandy loam, whereas Ramgati and Barisal soil series fall in the clay loam texture. The mean concentrations of P, N, S, K, Ca, Na, and Mg were 0.006–0.009%, 0.071–0.086%, 0.014–0.036%, 4.10–6.23 Cmol kg−1, 3.80–6.60 Cmol kg−1, 5.54–10.8 Cmol kg−1, and 7.72–10.3 Cmol kg−1, respectively. Distinct variations were observed among the soil series for P, S, K, Ca, Na, and Mg. The average value of trace elements was observed as 39,024, 321.3, 92.9, 48.7, 28.9, 22.6, 13.7, 4.78, and 1.93 mg kg−1, respectively, for Fe, Mn, Zn, Cr, Ni, Cu, Pb, As, and Cd. Principal component analysis (PCA) suggested that OC, EC, pH, N, P, K, Na, As, Cd, Pb, and Ni were the key soil health indicators for the study’s soil quality index (SQI) assessment. The Barisal soil series had the highest SQI. The study highlighted that the seasonal variations had a potential influence on soil properties. These insights pave the way for developing targeted management and mitigation strategies to improve soil quality in the future.