New pedotransfer approaches to predict soil bulk density using WoSIS soil data and environmental covariates in Mediterranean agro-ecosystems

Schillaci, Calogero; Perego, Alessia; Валкама, Елена; Maerker, Michael; Saia, Sergio; Veronesi, Fabio; Lipani, Aldo; Lombardo, Luigi; Tadiello, Tommaso; Gamper, Hannes A.; Tedone, Luigi; Moss, Cami; Pareja-Serrano, Elena; Amato, Gabriele; Kühl, Kersten; Dămătîrcă, Claudia; Cogato, Alessia; Mzid, Nada; Eeswaran, Rasu; Rabelo, Marya; Sperandio, Giorgio; Bosino, Alberto; Bufalini, Margherita; Tunçay, Tülay; Ding, Jianqi; Fiorentini, Marco; Tiscornia, Guadalupe; Conradt, Sarah; Botta, Marco; Acutis, Marco

doi:10.1016/j.scitotenv.2021.146609

Cited by 42 publications

(17 citation statements)

References 124 publications

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“…A good example is bulk density, which can be measured in a field experiment or estimated using pedotransfer functions in order to compute SOC stocks from concentrations. The potential uncertainty which arises by applying a pedotransfer function developed in a particular area, and which is then applied on different sites (Schillaci et al, 2021) can diminish the precision of final results.…”

Section: Meta-analysis As a Methods And Application In Different Disc...mentioning

confidence: 99%

Quality Assessment of Meta-Analyses on Soil Organic Carbon

Fohrafellner

Zechmeister‐Boltenstern

Murugan

et al. 2022

Preprint

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Abstract. Soil organic carbon (SOC) plays a vital role in the global carbon cycle and is a potential sink for carbon dioxide. Agricultural management practices can support carbon sequestration and therefore offer potential removal strategies, whilst improving overall soil quality. Meta-analysis allows to summarize results from primary articles by calculating an overall effect size and hence to reveal the source of variation across studies. The number of meta-analyses published in the field of agriculture is continuously rising. At the same time, more and more articles refer to their synthesis work as a meta-analysis, despite applying less than rigorous methodologies. As a result, poor quality meta-analyses are published, which may lead to questionable conclusions and recommendations to scientists, policymakers and farmers. This study aims at quantitatively analyzing 31 meta-analyses, published between the years 2005–2020, studying the effects of different management practices on SOC. We compiled a quality criteria-set, suitable for soil and agricultural sciences, by adapting existing meta-analytical guidelines from other disciplines. The set is supported by a scoring scheme, which allows a quantitative analysis. The retrieved meta-analyses were structured according to 11 management categories, such as tillage, cover crops, residue management, biochar application etc., which allowed us to assess the state-of-knowledge on these categories. Major deficiencies were found in the use of standard metrics for effect size calculation, independence of effect sizes, standard deviation extraction for each study and weighting by the inverse of variance. Only one out of 31 SOC meta-analyses, which studied the effects of no-till/reduced tillage compared to conventional tillage, was found to be of high quality. Therefore, improved meta-analyses on the effects of e.g., organic agriculture, biochar, fertilization or crop diversification on SOC are urgently needed. We conclude that, despite the efforts over the last 15 years, the quality of meta-analyses on SOC research is still low. In order for the scientific community to provide high quality synthesis work and to make advancements in the sustainable management of agricultural soils, we need to adapt rigorous methodologies of meta-analysis as quickly as possible.

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Section: Meta-analysis As a Methods And Application In Different Disc...mentioning

confidence: 99%

Quality Assessment of Meta-Analyses on Soil Organic Carbon

Fohrafellner

Zechmeister‐Boltenstern

Murugan

et al. 2022

Preprint

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“…Finally, we reported the results of some simple models for predicting the physiological responses of two grapevine varieties under drought stress (Table 4). Simple but accurate models arouse great interest for winemakers, land management, and policy making [60]. Therefore, the results of this study may be used to support stress management on a local to global scale.…”

Section: Potential Of the Thermal And Spectral Vegetation Indices To ...mentioning

confidence: 96%

Water Stress Impacts on Grapevines (Vitis vinifera L.) in Hot Environments: Physiological and Spectral Responses

Cogato

Jewan

et al. 2022

Agronomy

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The projected increase in temperature and water scarcity represents a challenge for winegrowers due to changing climatic conditions. Although heat and drought often occur concurrently in nature, there is still little known about the effects of water stress (WS) on grapevines in hot environments. This study aimed to assess whether the grapevine’s physiological and spectral responses to WS in hot environments differ from those expected under lower temperatures. Therefore, we propose an integrated approach to assess the physiological, thermal, and spectral response of two grapevine varieties (Vitis vinifera L.), Grenache and Shiraz, to WS in a hot environment. In a controlled environment room (CER), we imposed high-temperature conditions (TMIN 30 °C–TMAX 40 °C) and compared the performance of well-watered (WW) and WS-ed potted own-rooted Shiraz and Grenache grapevines (SH_WW, SH_WS, GR_WW, and GR_WS, respectively). We monitored the vines’ physiological, spectral, and thermal trends from the stress imposition to the recovery after re-watering. Then, we performed a correlation analysis between the physiological parameters and the spectral and thermal vegetation indices (VIs). Finally, we looked for the best-fitting models to predict the physiological parameters based on the spectral VIs. The results showed that GR_WS was more negatively impacted than SH_WS in terms of net photosynthesis (Pn, GR-WS = 1.14 μmol·CO2 m−2·s−1; SH-WS = 3.64 μmol·CO2 m−2·s−1), leaf transpiration rate (E, GR-WS = 1.02 mmol·H2O m−2·s−1; SH-WS = 1.75 mmol·H2O m−2·s−1), and stomatal conductance (gs, GR-WS = 0.04 mol·H2O m−2·s−1; SH-WS = 0.11 mol·H2O m−2·s−1). The intrinsic water-use efficiency (WUEi = Pn/gs) of GR_WS (26.04 μmol·CO2 mol−1 H2O) was lower than SH_WS (34.23 μmol·CO2 mol−1 H2O) and comparable to that of SH_WW (26.31 μmol·CO2 mol−1 H2O). SH_WS was not unaffected by water stress except for E. After stress, Pn, gs, and E of GR_WS did not recover, as they were significantly lower than the other treatments. The correlation analysis showed that the anthocyanin Gitelson (AntGitelson) and the green normalised difference vegetation index (GNDVI) had significant negative correlations with stem water potential (stem), Pn, gs, and E and positive correlation with WUEi. In contrast, the photochemical reflectance index (PRI), the water index (WI), and the normalised difference infrared index (NDII) showed an opposite trend. Finally, the crop water stress (CWSI) had significant negative correlations with the stem in both varieties. Our findings help unravel the behaviour of vines under WS in hot environments and suggest instrumental approaches to help the winegrowers managing abiotic stress.

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“…The potential uncertainty which can arise by applying a pedotransfer function developed in a particular area and which is then applied on different sites can seriously impact the final results. In fact, in recent works, Schillaci et al (2021) and Nasta et al (2020) tested the performance in predicting bulk density (BD) of new and previous developed pedotransfer functions, respectively. They found that the associated error (RMSE %, Root Mean Square Error of prediction) of the pedotransfer function ranged on average between 19% and 26%, respectively.…”

Section: Introductionmentioning

confidence: 99%

Soil organic carbon under conservation agriculture in Mediterranean and humid subtropical climates: Globalmeta‐analysis

Tadiello

Acutis

Perego

et al. 2023

European J Soil Science

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Conservation agriculture (CA) is an agronomic system based on minimum soil disturbance (no‐tillage, NT), permanent soil cover, and species diversification. The effects of NT on soil organic carbon (SOC) changes have been widely studied, showing somewhat inconsistent conclusions, especially in relation to the Mediterranean and humid subtropical climates. These areas are highly vulnerable and predicted climate change is expected to accentuate desertification and, for these reasons, there is a need for clear agricultural guidelines to preserve or increment SOC. We quantitively summarized the results of 47 studies all around the world in these climates investigating the sources of variation in SOC responses to CA, such as soil characteristics, agricultural management, climate, and geography. Within the climatic area considered, the overall effect of CA on SOC accumulation in the plough layer (0–0.3 m) was 12% greater in comparison to conventional agriculture. On average, this result corresponds to a carbon increase of 0.48 Mg C ha−1 year−1. However, the effect was variable depending on the SOC content under conventional agriculture: it was 20% in soils which had ≤ 40 Mg C ha−1, while it was only 7% in soils that had > 40 Mg C ha−1. We proved that 10 years of CA impact the most on soil with SOC ≤ 40 Mg C ha−1. For soils with less than 40 Mg C ha−1, increasing the proportion of crops with bigger residue biomasses in a CA rotation was a solution to increase SOC. The effect of CA on SOC depended on clay content only in soils with more than 40 Mg C ha−1 and become null with a SOC/clay index of 3.2. Annual rainfall (that ranged between 331–1850 mm y−1) and geography had specific effects on SOC depending on its content under conventional agriculture. In conclusion, SOC increments due to CA application can be achieved especially in agricultural soils with less than 40 Mg C ha−1 and located in the middle latitudes or in the dry conditions of Mediterranean and humid subtropical climates. Highlights The results of 47 studies were quantitively summarized by using a meta‐analysis SOC accumulation due to CA was 12% greater compared to conventional agriculture SOC increment due to CA can reach 20% in soils having less than 40 Mg C ha−1 The impacts of pedo‐climatic factors and agronomic management practices were studied

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New pedotransfer approaches to predict soil bulk density using WoSIS soil data and environmental covariates in Mediterranean agro-ecosystems

Cited by 42 publications

References 124 publications

Quality Assessment of Meta-Analyses on Soil Organic Carbon

Quality Assessment of Meta-Analyses on Soil Organic Carbon

Water Stress Impacts on Grapevines (Vitis vinifera L.) in Hot Environments: Physiological and Spectral Responses

Soil organic carbon under conservation agriculture in Mediterranean and humid subtropical climates: Globalmeta‐analysis

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