Effects of Cd addition on soil phosphorus mineralization in reclaimed coastal wetlands along a 100-year reclamation chronosequence in the Pearl River Estuary (China)

Liu, Zhe; Gao, Zhaoqin; Bai, Junhong; Zhang, Guangliang; Tang, Ruoxuan; Chen, Guozhu

doi:10.3389/fmars.2022.965197

Cited by 3 publications

(2 citation statements)

References 48 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In terms of the labile P fractions present in the soil, the NaHCO 3 -Pi fraction denotes adsorbed inorganic P forms that are relatively less labile, while the NaHCO3-Po fraction can be readily mineralized in the soil solution ( Bai et al., 2020 ; Liu et al., 2022 ). These two fractions are considered the most accessible P pools for supporting plant growth ( Gächter and Meyer, 1993 ; Ahmed et al., 2020 ).…”

Section: Discussionmentioning

confidence: 99%

Exploring biochar and fishpond sediments potential to change soil phosphorus fractions and availability

Mahmood,

Wang,

Ahmed

et al. 2023

Front. Plant Sci.

View full text Add to dashboard Cite

Phosphorus (P) availability in soil is paradoxical, with a significant portion of applied P accumulating in the soil, potentially affecting plant production. The impact of biochar (BR) and fishpond sediments (FPS) as fertilizers on P fixation remains unclear. This study aimed to determine the optimal ratio of BR, modified biochar (MBR), and FPS as fertilizer replacements. A pot experiment with maize evaluated the transformation of P into inorganic (Pi) and organic (Po) fractions and their contribution to P uptake. Different percentages of FPS, BR, and MBR were applied as treatments (T1–T7), T1 [(0.0)], T2 [FPS (25.0%)], T3 [FPS (25.0%) + BR (1%)], T [FPS (25%) +MBR (3%)], T5 [FPS (35%)], T6 [FPS (35%) +BR (1%)], and T7 [FPS (35%) + MBR (1%)]. Using the modified Hedley method and the Tiessen and Moir fractionation scheme, P fractions were determined. Results showed that various rates of MBR, BR, and FPS significantly increased labile and moderately labile P fractions (NaHCO3-Pi, NaHCO3-Po, HClD-Pi, and HClC-Pi) and residual P fractions compared with the control (T1). Positive correlations were observed between P uptake, phosphatase enzyme activity, and NaHCO3-Pi. Maximum P uptake and phosphatase activity were observed in T6 and T7 treatments. The addition of BR, MBR, and FPS increased Po fractions. Unlike the decline in NaOH-Po fraction, NaHCO3-Po and HClc-Po fractions increased. All Pi fractions, particularly apatite (HClD-Pi), increased across the T1–T7 treatments. HClD-Pi was the largest contributor to total P (40.7%) and can convert into accessible P over time. The T5 treatment showed a 0.88% rise in residual P. HClD-Pi and residual P fractions positively correlated with P uptake, phosphatase activity, NaOH-Pi, and NaOH-Po moderately available fractions. Regression analysis revealed that higher concentrations of metals such as Ca, Zn, and Cr significantly decreased labile organic and inorganic P fractions (NaHCO3-Pi, R2 = 0.13, 0.36, 0.09) and their availability (NaHCO3-Po, R2 = 0.01, 0.03, 0.25). Excessive solo BR amendments did not consistently increase P availability, but optimal simple and MBR increased residual P contents in moderately labile and labile forms (including NaOH-Pi, NaHCO3-Pi, and HClD-Pi). Overall, our findings suggest that the co-addition of BR and FPS can enhance soil P availability via increasing the activity of phosphatase enzyme, thereby enhancing plant P uptake and use efficiency, which eventually maintains the provision of ecosystem functions and services.

show abstract

Section: Discussionmentioning

confidence: 99%

Exploring biochar and fishpond sediments potential to change soil phosphorus fractions and availability

Mahmood,

Wang,

Ahmed

et al. 2023

Front. Plant Sci.

View full text Add to dashboard Cite

show abstract

“…A fixed proportion of chemical fertilizers (N > K > P) was applied to farmlands to enhance the productivity of crops during the long-term reclamation. However, crops mainly absorbed AN, with a low use of the efficiency of AP and AK, leading to large quantities of AK and AP being left in the soil [48][49][50]. The Yellow River Delta was significantly influenced by seawater immersion, and the high K + content caused the accumulation of AK in each layer of the native saline soils.…”

Section: Soil Nhmentioning

confidence: 99%

Soil Quality Improvement with Increasing Reclamation Years in the Yellow River Delta

Liu,

Li,

Zhang

et al. 2023

Agronomy

View full text Add to dashboard Cite

The saline soils in the Yellow River Delta are primarily affected by seawater intrusion resulting from the intersection of land and sea, which exhibit variations in salinity. The quality of these soils is also influenced by anthropogenic reclamation, including fertilization and irrigation. This study quantitatively evaluated the distinct soil properties and soil quality characteristics of the Yellow River Delta during different reclamation years (i.e., 0a, 1a, 5a, 10a, and 20a) using principal component analysis (PCA) and the Soil Quality Index (SQI). The findings indicated that the soil salt content (SSC) significantly decreased (p < 0.05) from 6.60 g/kg in the initial reclamation year (0a) to 1.63 g/kg in the 10th year (10a) and then slightly increased to 2.85 g/kg in the 20th year (20a). Consequently, the soil salinity level shifted from saline soil to slight salinity and then increased to medium salinity. Ammonium nitrogen (NH4+-N) notably increased by 8.31 mg/kg during the first five years of reclamation (0a to 5a) and gradually decreased by 2.56 mg/kg in the 20th year (20a). On the other hand, nitrate nitrogen (NO3−-N) experienced a significant decrease of 2–5 times after reclamation but continued to increase by 8.96 mg/kg with subsequent reclamation years. The available nitrogen (AN), available phosphorus (AP), and soil organic carbon (SOC) exhibited a significant increase of 24.87 mg/kg, 10.11 mg/kg, and 6.76 g/kg, respectively, with increasing reclamation years. However, available potassium (AK) gradually decreased after reclamation and then increased in the 20th year (20a). The values of SQI for different reclamation years were 0.307 for 0a, 0.339 for 1a, 0.320 for 5a, 0.318 for 10a, and 0.327 for 20a, indicating an increasing trend with increasing reclamation years. It was discovered that long-term reclamation significantly reduced soil salinity and improved soil quality, leading to the sustainable development of reclaimed saline soils in the Yellow River Delta.

show abstract

Deciphering bioprocess responses in organic phosphorus mineralization to different antibiotic stresses: Interaction mechanisms mediated by microbial succession and extracellular polymeric substances and regulatory patterns

Wu,

Kang,

Mao

et al. 2025

Bioresource Technology

View full text Add to dashboard Cite

Effects of Cd addition on soil phosphorus mineralization in reclaimed coastal wetlands along a 100-year reclamation chronosequence in the Pearl River Estuary (China)

Cited by 3 publications

References 48 publications

Exploring biochar and fishpond sediments potential to change soil phosphorus fractions and availability

Exploring biochar and fishpond sediments potential to change soil phosphorus fractions and availability

Soil Quality Improvement with Increasing Reclamation Years in the Yellow River Delta

Deciphering bioprocess responses in organic phosphorus mineralization to different antibiotic stresses: Interaction mechanisms mediated by microbial succession and extracellular polymeric substances and regulatory patterns

Contact Info

Product

Resources

About