Publikācijas

Skranda I., Spalva G., Bardule A., Lazdins A. 2024. International Scientific Conference "Engineering for Rural Development 2024", Jelgava, Latvia, 22-24.05.2024., 805-810
Case study on effect of rewetting grassland with organic soils on greenhouse gas (GHG) emissions from soil
DOI: 10.22616/ERDev.2024.23.TF158
Skranda I., Spalva G., Muiznieks E., Lazdins A. 2024. International Scientific Conference “Engineering for Rural Development 2024”, Jelgava, Latvia, 22-24.05.2024., 696-701
Comparison of nitrous oxide (N2O) and methane (CH4) fluxes in naturally wet and drained mineral forest soil
DOI: 10.22616/ERDev.2024.23.TF134
Butlers A., Lazdiņš A., Kalēja S., Purviņa D., Spalva G., Saule G., Bārdule A. 2023. Forests, 14(7), 1390
CH4 and N2O Emissions of Undrained and Drained Nutrient-Rich Organic Forest Soil
DOI: 10.3390/f14071390
Bārdule A., Butlers A., Spalva G., Ivanovs J., Meļņiks R.N., Līcīte I., Lazdiņš A. 2023. Water, 15(10), 1954
The Surface-to-Atmosphere GHG Fluxes in Rewetted and Permanently Flooded Former Peat Extraction Areas Compared to Pristine Peatland in Hemiboreal Latvia
DOI: 10.3390/w15101954
Petaja G., Ancāns R., Bārdule A., Spalva G., Meļņiks R.N., Purviņa D., Lazdiņš A. 2023. Forests, 14(3), 521
Carbon Dioxide, Methane and Nitrous Oxide Fluxes from Tree Stems in Silver Birch and Black Alder Stands with Drained and Naturally Wet Peat Soils
DOI: 10.3390/f14030521
Samariks V., Lazdiņš A., Bārdule A., Kalēja S., Butlers A., Spalva G., Jansons Ā. 2023. Forests, 14(2), 184
Impact of Former Peat Extraction Field Afforestation on Soil Greenhouse Gas Emissions in Hemiboreal Region
DOI: 10.3390/f14020184
Butlers A., Spalva G., Licite I., Purvina D. 2022. Proceedings of 21st International Scientific Conference "Engineering for Rural Development", 577-582
Carbon dioxide (CO2) emissions from naturally wet and drained nutrient-rich organic forests soils
DOI: 10.22616/ERDev.2022.21.TF190
Champion J., Lazdins A., Spalva G. 2022. Proceedings of 21st International Scientific Conference "Engineering for Rural Development", 760-765
Short term impact of application of different doses of wood ash on greenhouse gas (GHG) emissions from peat
DOI: 10.22616/ERDev.2022.21.TF230
Zimelis A., Spalva G. 2022. Proceedings of 21st International Scientific Conference "Engineering for Rural Development", 537-542
Productivity and GHG balance of harvesting and forwarding in thinning of aspen hybrid plantations
DOI: 10.22616/ERDev.2022.21.TF181
Butlers A., Bārdule A., Spalva G., Muižnieks E. 2021. Proceedings of the 10th International Scientific Conference "Rural Development 2021: Challenges for Sustainable Bioeconomy and Climate Change", Kaunas, 21-23.09.2021, 195-200
N2O and CH4 emissions from naturally wet and drained nutrient-rich organic forest soils
DOI: 10.15544/RD.2021.030
Lazdins A., Kaleja S., Zimelis A., Spalva G., Bardulis A. 2021. Proceedings of 20th International Scientific Conference "Engineering for Rural Development 2021", 780-785
Productivity and carbon dioxide (CO2) emissions of compact class Vimek 404 T5 harvester in thinning of young birch stands in afforested cropland
DOI: 10.22616/ERDev.2021.20.TF173
Makovskis K., Lazdina D., Kaleja S., Spalva G., Dumins K. 2019. Agronomy Research, 17(6), 2327-2338
Planting and tending productivity comparison in mounds and disc trenches using containerized and bareroot coniferous seedlings
DOI: 10.15159/ar.19.196
Lazdiņš A., Iecelnieks E., Zimelis A., Spalva G. 2019. Proceedings of Scientific Conference "Engineering for Rural Development 2019", 18, 1546-1551
Evaluation of work methods for production of solid biofuel from harvesting residues in commercial thinning of coniferous forests
DOI: 10.22616/ERDev2019.18.N457
Kalēja S., Spalva G., Lazdiņš A. 2019. Proceedings of International Conference "Research for Rural Development 2019", 1, 44-51
Evaluation of potential impact of soil scarification pattern on trees’ damages in future commercial thinning
DOI: 10.22616/rrd.25.2019.007
Kalēja S., Lazdiņš A., Zimelis A., Spalva G. 2018. Agronomy Research, 16(5), 2068-2078
Model for cost calculation and sensitivity analysis of forest operations
DOI: 10.15159/AR.18.207
Petaja G., Okmanis M., Polmanis K., Stola J., Spalva G., Jansons J. 2018. Agronomy Research, 16(4), 1809-1823
Evaluation of greenhouse gas emissions and area of organic soils in cropland and grassland in Latvia – integrated National forest inventory data and soil maps approach
DOI: 10.15159/ar.18.183
Kalēja S., Spalva G., Stola J. 2018. Proceedings of 17th International Scientific Conference "Engineering for Rural Development", 17, 1458-1463
Productivity and cost of logbear F4000 forwarder in thinning depending on driving conditions
DOI: 10.22616/ERDev2018.17.N275
Zimelis A., Lazdiņš A., Spalva G. 2017. Proceedings of 23th International Scientific Conference "Research for Rural Development 2017", 1, 107-112
Comparison of productivity of Vimek harvester in birch plantation and young coniferous stands
DOI: 10.22616/rrd.23.2017.016
Zimelis A., Kaleja S., Spalva G., Lazdins A. 2017. Proceedings of 16th International Scientific Conference "Engineering for Rural Development", 16, 756-760
Impact of feed rollers on productivity and fuel consumption
DOI: 10.22616/ERDev2017.16.N152