Publications by authors named "Yunshan Meng"
Article Synopsis
- * Machine learning techniques, including support vector regression, random forest regression, and extreme gradient boosting, were assessed for their ability to estimate subsurface DO, with random forest showing the best performance overall.
- * Accuracy in estimating DO varies with depth, peaking just above 700 dbar, where sea surface temperature is more impactful than other surface parameters, and random forest outperforms the PISCES model particularly in the equatorial region.
Article Synopsis
- - Soil salinization threatens global soil quality, making the evaluation of reclamation efforts in saline-sodic wastelands essential, especially considering factors like microbial limitations and ecosystem multifunctionality (EMF).
- - A decade-long study identified key predictors, revealing that certain soil quality factors, like β-glucosidase and saturated hydraulic conductivity, significantly drive EMF, with a converted paddy field system showing a 275.35% improvement in EMF over monoculture methods.
- - Reclamation efforts improved the soil quality index (SQI), but the combined approach of altering systems and reducing microbial limitations was more effective in enhancing EMF than SQI alone, highlighting the need to avoid monoculture systems for better reclamation
Soil acidification is a major threat to agricultural sustainability in tropical and subtropical regions. Biodegradable and environmentally friendly materials, such as calcium lignosulfonate (CaLS), calcium poly(aspartic acid) (PASP-Ca), and calcium poly γ-glutamic acid (γ-PGA-Ca), are known to effectively ameliorate soil acidity. However, their effectiveness in inhibiting soil acidification has not been studied.
View Article and Find Full Text PDFChitosan is widely used in reactive oxygen species (ROS)-responsive films but remains great challenges owing to its weak mechanical strength and strong hydrophilicity. Herein, we synthesized novel hydrophobic crosslinked CS films with ROS-responsive properties and excellent physicochemical properties. A novel crosslinker, 2-((10-carboxydecyl)thio)succinic acid, with long-chain alkanes, three carboxyl groups, and sulfhydryl groups was synthesized and then used to produce thioether-containing crosslinked CS membranes.
View Article and Find Full Text PDFOrganic-inorganic calcium lignosulfonate compounds for soil acidity amelioration.
Environ Sci Pollut Res Int
October 2022
Soil acidification is a problem widely occurring worldwide, which severely threaten food security and agricultural sustainability. Calcium lignosulfonate (CaLS), a cheap and ecofriendly compound, is used for the first time to amend acid soil by utilizing its unique organic and inorganic functional moieties simultaneously. Both column leaching and incubation experiments were conducted to investigate the comparative effects of CaLS (four rates at 5, 10, 15, 20 g kg) and compared with conventional amendments, including gypsum (5 g kg), lignin (5 g kg), L + G (each at 5 g kg), and control.
View Article and Find Full Text PDFIn this study, an improved Data INterpolating Empirical Orthogonal Functions (DINEOF) algorithm for determination of missing values in a spatio-temporal dataset is presented. Compared with the ordinary DINEOF algorithm, the iterative reconstruction procedure until convergence based on every fixed EOF to determine the optimal EOF mode is not necessary and the convergence criterion is only reached once in the improved DINEOF algorithm. Moreover, in the ordinary DINEOF algorithm, after optimal EOF mode determination, the initial matrix with missing data will be iteratively reconstructed based on the optimal EOF mode until the reconstruction is convergent.
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