The Experts below are selected from a list of 360 Experts worldwide ranked by ideXlab platform
Andre Faaij - One of the best experts on this subject based on the ideXlab platform.
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correction the global technical and economic potential of bioenergy from Salt Affected Soils
Energy and Environmental Science, 2020Co-Authors: Birka Wicke, Edward Smeets, V Dornburg, Boris Vashev, Thomas Gaiser, W C Turkenburg, Andre FaaijAbstract:Correction for ‘The global technical and economic potential of bioenergy from Salt-Affected Soils’ by Birka Wicke et al., Energy Environ. Sci., 2011, 4, 2669–2681, DOI: 10.1039/C1EE01029H.
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biomass production in agroforestry and forestry systems on Salt Affected Soils in south asia exploration of the ghg balance and economic performance of three case studies
Journal of Environmental Management, 2013Co-Authors: Birka Wicke, Edward Smeets, Razzaque Akanda, Leon Stille, Ranjay K Singh, Abdul Rasul Awan, Khalid Mahmood, Andre FaaijAbstract:Abstract This study explores the greenhouse gas balance and the economic performance (i.e. net present value (NPV) and production costs) of agroforestry and forestry systems on Salt-Affected Soils (biosaline (agro)forestry) based on three case studies in South Asia. The economic impact of trading carbon credits generated by biosaline (agro)forestry is also assessed as a potential additional source of income. The greenhouse gas balance shows carbon sequestration over the plantation lifetime of 24 Mg CO2-eq. ha−1 in a rice-Eucalyptus camaldulensis agroforestry system on moderately saline Soils in coastal Bangladesh (case study 1), 6 Mg CO2-eq. ha−1 in the rice-wheat- Eucalyptus tereticornis agroforestry system on sodic/saline-sodic Soils in Haryana state, India (case study 2), and 96 Mg CO2-eq. ha−1 in the compact tree (Acacia nilotica) plantation on saline-sodic Soils in Punjab province of Pakistan. The NPV at a discount rate of 10% is 1.1 k€ ha−1 for case study 1, 4.8 k€ ha−1 for case study 2, and 2.8 k€ ha−1 for case study 3. Carbon sequestration translates into economic values that increase the NPV by 1–12% in case study 1, 0.1–1% in case study 2, and 2–24% in case study 3 depending on the carbon credit price (1–15 € Mg−1 CO2-eq.). The analysis of the three cases indicates that the economic performance strongly depends on the type and severity of Salt-Affectedness (which affect the type and setup of the agroforestry system, the tree species and the biomass yield), markets for wood products, possibility of trading carbon credits, and discount rate.
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the global technical and economic potential of bioenergy from Salt Affected Soils
Energy and Environmental Science, 2011Co-Authors: Birka Wicke, Edward Smeets, V Dornburg, Boris Vashev, Thomas Gaiser, W C Turkenburg, Andre FaaijAbstract:This study assesses the extent and location of Salt-Affected Soils worldwide and their current land use and cover as well as the current technical and economic potential of biomass production from forestry plantations on these Soils (biosaline forestry). The global extent of Salt-Affected land amounts to approximately 1.1 Gha, of which 14% is classified as forest, wetlands or (inter)nationally protected areas and is considered unavailable for biomass production because of sustainability concerns. For the remaining Salt-Affected area, this study finds an average biomass yield of 3.1 oven dry ton ha−1 y−1 and a global technical potential of 56 EJ y−1 (equivalent to 11% of current global primary energy consumption). If agricultural land is also considered unavailable because of sustainability concerns, the technical potential decreases to 42 EJ y−1. The global economic potential of biosaline forestry at production costs of 2€ GJ−1 or less is calculated to be 21 EJ y−1 when including agricultural land and 12 EJ y−1 when excluding agricultural land. At production costs of up to 5€ GJ−1, the global economic potential increases to 53 EJ y−1 when including agricultural land and to 39 EJ y−1 when excluding agricultural land. Biosaline forestry may contribute significantly to energy supply in certain regions, e.g., Africa. Biosaline forestry has numerous additional benefits such as the potential to improve soil, generate income from previously low-productive or unproductive land, and soil carbon sequestration. These are important additional reasons for investigating and investing in biosaline forestry.
N Peinemann - One of the best experts on this subject based on the ideXlab platform.
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soil organic matter and its lignin component in surface horizons of Salt Affected Soils of the argentinian pampa
Catena, 2005Co-Authors: N Peinemann, Georg Guggenberger, Wolfgang ZechAbstract:Abstract Salt-Affected Soils differ in their chemical properties to all other Soils. Sodicity and salinity may affect the soil organic matter component of these Soils. In a field experiment, we investigated organic matter decomposition in nonsaline nonsodic Aquic Argiudoll, a nonsaline sodic Typic Natraquoll, nonsaline nonsodic Petrocalcic Paleudoll and a saline sodic Typic Natralboll in the Pampa Deprimida, Argentina. The objectives were to identify the degree of stabilization of organic matter by association with mineral particles in these Soils and to follow in particular the fate of lignin in these Soils. We measured organic carbon, total nitrogen and the extent of lignin alteration with soil depth and in various particle size fractions. The Salt-Affected Soils contained much less organic carbon and nitrogen in their mollic epipedons than the nonsaline nonsodic Soils, and bioturbation into deeper layers was restrained. In the Salt-Affected Soils most of the organic matter was in sand-sized particles. Retarded degradation of plant residues was indicated by the pattern of lignin-derived phenols, suggesting less alteration of lignin in the Salt-Affected Soils than in the nonsaline nonsodic Soils. We suggest that this results from the effects of high pH, high sodicity, and high salinity on the microorganisms and their enzymatic activities. The high pH and high concentrations of monovalent cations decreased formation of solid organo-mineral complexes. We conclude that in the Salt-Affected Soils oxidatively altered organic compounds are susceptible to losses in dissolved or colloidal forms, because these compounds are not stabilized against leaching and mineralization by chemical bonding to soil minerals.
Ingrid Kogelknabner - One of the best experts on this subject based on the ideXlab platform.
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pruning residues incorporation and reduced tillage improve soil organic matter stabilization and structure of Salt Affected Soils in a semi arid citrus tree orchard
Soil & Tillage Research, 2021Co-Authors: Noelia Garciafranco, Martin Wiesmeier, Luis Carlos Colocho Hurtarte, Franziska Fella, M Martinezmena, Maria Almagro, Eloisa Garcia Martinez, Ingrid KogelknabnerAbstract:Abstract Soil salinization is an emerging problem worldwide as a result of unsustainable land management practices and climate change. However, Salt-Affected Soils under agricultural use could act as a C sink if these negative effects can be offset by combination of sustainable land management practices (SLM). In this study, we assessed the effect of (i) intensive tillage along with flood irrigation (IT); (ii) combination of no-tillage with pruning residues (branches and leaves) as mulch, and drip-irrigation (NT + PM); and (iii) combination of reduced tillage with the incorporation of pruning residues and drip-irrigation (RT + PI), on physico-chemical soil parameters, aggregate stability, amount and quality of organic matter fractions and soil organic carbon (SOC) sequestration in a lemon tree orchards (Citrus limon var. Verna) under semi-arid climate conditions. The RT + PI management system showed a decrease in salinity and bulk density, and increased soil porosity, soil OC and N stocks, and percentage of OC-rich macroaggregates as compared to the IT system. The aggregate-occluded particulate organic matter fraction (oPOM) played a key role in macroaggregate stability. The NT + PM treatment also showed positive effects on the investigated soil properties, but this was limited to the upmost topsoil (0−5 cm). The IT management system revealed highest values of salinity and bulk density, and considerably lower SOC stocks. Moreover, a degradation of soil structure with a low percentage of macroaggregates depleted in SOC was observed. We conclude that the incorporation of pruning residues in combination with reduced tillage and drip-irrigation is an effective management system to improve soil structure and facilitate SOC sequestration. Therefore, conventional management systems based on intensive tillage and flood irrigation should be abandoned in Salt-Affected Soils under semi-arid climate conditions in favour of systems with higher organic matter inputs incorporated into the soil combined with measures to reduce the Salt content.
Wolfgang Zech - One of the best experts on this subject based on the ideXlab platform.
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soil organic matter and its lignin component in surface horizons of Salt Affected Soils of the argentinian pampa
Catena, 2005Co-Authors: N Peinemann, Georg Guggenberger, Wolfgang ZechAbstract:Abstract Salt-Affected Soils differ in their chemical properties to all other Soils. Sodicity and salinity may affect the soil organic matter component of these Soils. In a field experiment, we investigated organic matter decomposition in nonsaline nonsodic Aquic Argiudoll, a nonsaline sodic Typic Natraquoll, nonsaline nonsodic Petrocalcic Paleudoll and a saline sodic Typic Natralboll in the Pampa Deprimida, Argentina. The objectives were to identify the degree of stabilization of organic matter by association with mineral particles in these Soils and to follow in particular the fate of lignin in these Soils. We measured organic carbon, total nitrogen and the extent of lignin alteration with soil depth and in various particle size fractions. The Salt-Affected Soils contained much less organic carbon and nitrogen in their mollic epipedons than the nonsaline nonsodic Soils, and bioturbation into deeper layers was restrained. In the Salt-Affected Soils most of the organic matter was in sand-sized particles. Retarded degradation of plant residues was indicated by the pattern of lignin-derived phenols, suggesting less alteration of lignin in the Salt-Affected Soils than in the nonsaline nonsodic Soils. We suggest that this results from the effects of high pH, high sodicity, and high salinity on the microorganisms and their enzymatic activities. The high pH and high concentrations of monovalent cations decreased formation of solid organo-mineral complexes. We conclude that in the Salt-Affected Soils oxidatively altered organic compounds are susceptible to losses in dissolved or colloidal forms, because these compounds are not stabilized against leaching and mineralization by chemical bonding to soil minerals.
Luis Carlos Colocho Hurtarte - One of the best experts on this subject based on the ideXlab platform.
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pruning residues incorporation and reduced tillage improve soil organic matter stabilization and structure of Salt Affected Soils in a semi arid citrus tree orchard
Soil & Tillage Research, 2021Co-Authors: Noelia Garciafranco, Martin Wiesmeier, Luis Carlos Colocho Hurtarte, Franziska Fella, M Martinezmena, Maria Almagro, Eloisa Garcia Martinez, Ingrid KogelknabnerAbstract:Abstract Soil salinization is an emerging problem worldwide as a result of unsustainable land management practices and climate change. However, Salt-Affected Soils under agricultural use could act as a C sink if these negative effects can be offset by combination of sustainable land management practices (SLM). In this study, we assessed the effect of (i) intensive tillage along with flood irrigation (IT); (ii) combination of no-tillage with pruning residues (branches and leaves) as mulch, and drip-irrigation (NT + PM); and (iii) combination of reduced tillage with the incorporation of pruning residues and drip-irrigation (RT + PI), on physico-chemical soil parameters, aggregate stability, amount and quality of organic matter fractions and soil organic carbon (SOC) sequestration in a lemon tree orchards (Citrus limon var. Verna) under semi-arid climate conditions. The RT + PI management system showed a decrease in salinity and bulk density, and increased soil porosity, soil OC and N stocks, and percentage of OC-rich macroaggregates as compared to the IT system. The aggregate-occluded particulate organic matter fraction (oPOM) played a key role in macroaggregate stability. The NT + PM treatment also showed positive effects on the investigated soil properties, but this was limited to the upmost topsoil (0−5 cm). The IT management system revealed highest values of salinity and bulk density, and considerably lower SOC stocks. Moreover, a degradation of soil structure with a low percentage of macroaggregates depleted in SOC was observed. We conclude that the incorporation of pruning residues in combination with reduced tillage and drip-irrigation is an effective management system to improve soil structure and facilitate SOC sequestration. Therefore, conventional management systems based on intensive tillage and flood irrigation should be abandoned in Salt-Affected Soils under semi-arid climate conditions in favour of systems with higher organic matter inputs incorporated into the soil combined with measures to reduce the Salt content.
