Effect of reclamation on C, N, and P stoichiometry in soil and soil aggregates of a coastal wetland in eastern China

Xu, Caiyao; Liu, Pu; Li, Jianguo; Zhu, Ming

doi:10.1007/s11368-018-2131-z

Cited by 49 publications

(19 citation statements)

References 62 publications

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“…Many recent studies have reported increases in the N:P ratio in the soil, water, and plants of terrestrial and aquatic ecosystems (Blanes, Viñegla, Merino, & Carreira, ; Crowley et al, ; Hessen, ; Huang, Liu, et al, ; Jirousek, Hajek, & Bragazza, ; Lepori & Keck, ; Xu, Pu, Li, & Zhu, ; Yu et al, ; Zivkovic, Disney, & Moore, ) in response to “high levels of atmospheric N deposition” (Table ).…”

Section: Shifts In N:p Ratios Mediated By Anthropogenic Drivers Of Glmentioning

confidence: 99%

Anthropogenic global shifts in biospheric N and P concentrations and ratios and their impacts on biodiversity, ecosystem productivity, food security, and human health

Peñuelas

Janssens

Ciais

et al. 2020

Global Change Biology

172

119

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The availability of carbon (C) from high levels of atmospheric carbon dioxide (CO2) and anthropogenic release of nitrogen (N) is increasing, but these increases are not paralleled by increases in levels of phosphorus (P). The current unstoppable changes in the stoichiometries of C and N relative to P have no historical precedent. We describe changes in P and N fluxes over the last five decades that have led to asymmetrical increases in P and N inputs to the biosphere. We identified widespread and rapid changes in N:P ratios in air, soil, water, and organisms and important consequences to the structure, function, and biodiversity of ecosystems. A mass‐balance approach found that the combined limited availability of P and N was likely to reduce C storage by natural ecosystems during the remainder of the 21st Century, and projected crop yields of the Millennium Ecosystem Assessment indicated an increase in nutrient deficiency in developing regions if access to P fertilizer is limited. Imbalances of the N:P ratio would likely negatively affect human health, food security, and global economic and geopolitical stability, with feedbacks and synergistic effects on drivers of global environmental change, such as increasing levels of CO2, climatic warming, and increasing pollution. We summarize potential solutions for avoiding the negative impacts of global imbalances of N:P ratios on the environment, biodiversity, climate change, food security, and human health.

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Section: Shifts In N:p Ratios Mediated By Anthropogenic Drivers Of Glmentioning

confidence: 99%

Anthropogenic global shifts in biospheric N and P concentrations and ratios and their impacts on biodiversity, ecosystem productivity, food security, and human health

Peñuelas

Janssens

Ciais

et al. 2020

Global Change Biology

172

119

View full text Add to dashboard Cite

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“…The SOM concentration in the topsoil was significantly higher than that in the deeper layers in both the natural soils and reclaimed soils, which may have been attributable to the conversion from leaf litter fall to humus in the topsoil [46]. It has been found that reclamation activities could help to increase the proportion of soil aggregates and could reduce the loss of soil nutrients from tillage practices and irrigation [47], which may be one reason why P and K increased throughout the soil profile after reclamation [48]. The C/N ratio is a good indicator that can be used to characterize the decomposition degree of organic matter and the quality of soil organic matter and to identify the terrestrial-based or marine-based sources of soil organic matter and nitrogen limitation of plants in terrestrial ecosystems [49].…”

Section: Discussionmentioning

confidence: 96%

The Amelioration of Reclamation on Physical and Chemical Properties of Coastal Saline-Sodic Soils

Shi¹,

Zhu²,

Li³

et al. 2021

Pol. J. Environ. Stud.

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Poor soil quality caused by salinity and sodicity is the main limitation on plant growth and crop production worldwide. This study focused on the change in the physicochemical properties of the coastal saline-sodic soils of Yellow River Delta with different histories of reclamation. Soil samples representing six different reclamation times (RTs) were collected in two soil profiles (0-20 cm and 20-40 cm). The results showed that soil soluble salts (SSs) significantly decreased with increasing reclamation time, and the change were 32.9%-67.6% in the 0-20 cm layer and 39.0%-73.2% in the 20-40 cm layer, respectively. Based on non-liner fitting, the change regulation of SS with RT was expressed by the following functions:(R 2 = 0.93, p<0.01) in the 0-20 cm layer and SS = (R = 0.97, p<0.01) in the 20-40 cm layer, respectively. The other soil properties, such as bulk density, total carbon, total nitrogen, the ratio of carbon and nitrogen, soil organic matter, available phosphorus, and available potassium significantly improved with increasing RT, but EC and pH had the opposite trend. The change in the physical and chemical properties of saline-sodic soil was higher at 0-20 cm soil depth than at the 20-40 cm soil depth, indicating that the effect of reclamation on salinesodic soils occurs mainly in topsoil. In conclusion, reclamation has been shown to be an effective human activity in terms of improving fertilizer and inhibiting the salinity of saline-sodic soils.

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“…SOC is a key factor to adjust soil C/N and C/P changes under different reclamation treatments, whereas soil N/P changes are mainly controlled by TN in this study. Generally, the soil C/N ratio is inversely proportional to its decomposition rate, and soil with a lower C/N ratio has faster mineralization [23]. The soil C/P ratio is considered an important indicator for assessing the mineralization ability of soil phosphorus, which can measure the potential of soil organic matter mineralization to release phosphorus or absorb and retain phosphorus [22,23].…”

Section: Redundancy Analysismentioning

confidence: 99%

“…Generally, the soil C/N ratio is inversely proportional to its decomposition rate, and soil with a lower C/N ratio has faster mineralization [23]. The soil C/P ratio is considered an important indicator for assessing the mineralization ability of soil phosphorus, which can measure the potential of soil organic matter mineralization to release phosphorus or absorb and retain phosphorus [22,23]. In this experiment, soil C/N and C/P of each soil layer under different treatments generally increased first and then decreased, which might be due to the relatively high temperature in the seedling, filling, and maturation stages, and enhanced the soil microbial activities and accelerated the decomposition of organic matter, resulting from the decrease of SOC [42].…”

Section: Redundancy Analysismentioning

confidence: 99%

“…Soil nutrient directly affects the growth and productivity of plant communities, and soil C/N/P stoichiometry is considered an important indicator of soil nutrient characteristics [21]. Therefore, the study of soil C/N/P stoichiometry can indicate soil nutrient status, which is conducive to a better understanding of soil limiting elements, and scientifically adjusts the fertilization type, so as to promote plant growth and improve crop productivity [22,23]. Large numbers of studies have demonstrated that land reclamation can affect the soil C/N/P stoichiometry.…”

Section: Introductionmentioning

confidence: 99%

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Impacts of Agricultural Land Reclamation on Soil Nutrient Contents, Pools, Stoichiometry, and Their Relationship to Oat Growth on the East China Coast

Xie

Xiang

et al. 2021

Land

Self Cite

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Agricultural land reclamation of coastal tidal land (CTL) with organic amendments may modulate the soil properties, and therefore promote crop growth. However, the linkages between soil nutrient contents, pools, stoichiometry, and crop growth under the supplement of organic amendments in CTL is limited. In this study, six treatments including the control (CK), organic manure (OM), polyacrylamide plus organic manure (PAM + OM), straw mulching plus organic manure (SM + OM), buried straw plus organic manure (BS + OM), and bio-organic manure plus organic manure (BM + OM) were conducted to explore these linkages in newly reclaimed CTL in Jiangsu Province, eastern China. The results showed that the application of different soil reclamation treatments increased soil nutrient contents, pools, and modulated their stoichiometric ratio, which thus promoted the growth of oat. Soil under all reclamation treatments increased the contents of surface soil organic carbon (SOC), total nitrogen (TN), and total phosphorus (TP), and the BM + OM treatment had the highest increase, which increased by 11.7–182.4%, 24.3–85.7%, 3.2–29.4%, respectively. The highest soil C pools were observed in the oat heading stage (36.67–41.34 Mg C ha−1), whereas the soil N and P pools were more stable during the oat growth period. Similarly, the highest surface soil C/N and C/P were observed in the oat heading stage (11.23–14.67 and 8.97–14.21), whereas the N/P in surface soil increased compared with the CK treatment during the oat growth period, with the exception of the filling stage. Land reclamation treatments significantly promoted oat growth by changing soil C, N, and P contents, pools, and stoichiometry, among which soil SOC, TN, TP, C/P, and N/P are more closely related to oat growth (p < 0.05).

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Effect of reclamation on C, N, and P stoichiometry in soil and soil aggregates of a coastal wetland in eastern China

Cited by 49 publications

References 62 publications

Anthropogenic global shifts in biospheric N and P concentrations and ratios and their impacts on biodiversity, ecosystem productivity, food security, and human health

Anthropogenic global shifts in biospheric N and P concentrations and ratios and their impacts on biodiversity, ecosystem productivity, food security, and human health

The Amelioration of Reclamation on Physical and Chemical Properties of Coastal Saline-Sodic Soils

Impacts of Agricultural Land Reclamation on Soil Nutrient Contents, Pools, Stoichiometry, and Their Relationship to Oat Growth on the East China Coast

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