Luke
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Jukuri

Tervetuloa käyttämään Jukuria, Luonnonvarakeskuksen (Luke) avointa julkaisuarkistoa. Jukurissa on tiedot Luken julkaisutuotannosta. Osa julkaisuista on vapaasti ladattavissa. Luken muodostaneiden tutkimuslaitosten aikaisemmasta julkaisutuotannosta osan tiedot ovat järjestelmässä jo nyt ja kattavuus paranee jatkuvasti.

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Viimeksi tallennetut

  • Microplastics alter soil phosphatase activity and phosphorus mobilization : a global meta-analysis integrated with machine learning
    Xiang, Yangzhou; Peñuelas, Josep; Rillig, Matthias C.; Yao, Bin; Liu, Ying; Luo, Yang; Luo, Xuqiang; Li, Yuan
    Water research (Elsevier, 2027)
    Agricultural soils are a major reservoir and conduit within the anthropogenic water cycle, receiving microplastics (MPs) through sewage-sludge/biosolid land application, reclaimed-water irrigation, plastic-mulch degradation and atmospheric deposition, and exporting dissolved nutrients to surface and ground waters via runoff and leaching. Phosphatase enzymes govern organic-phosphorus mineralization and therefore the size of the dissolved phosphorus (P) pool that drives aquatic eutrophication, yet how MPs alter soil acid (ACP) and alkaline (ALP) phosphatase activity, and which conditions create the greatest soil-to-water transfer risk, remains unresolved. We synthesized 171 global studies (866 ACP and 688 ALP observations) in a meta-analysis integrated with an interpretable machine-learning ensemble that stacked XGBoost, LightGBM and Random Forest, with SHAP and accumulated local effects (ALE) interpretation. MPs significantly increased ACP activity by 9.89%, whereas the overall ALP effect was non-significant (+1.40%) but strongly context-dependent, ranging from significant stimulation (e.g., biodegradable MPs: +15.15%; aged MPs: +25.60%) to significant decrease under certain conditions (e.g., with nitrogen addition: −9.45%). Soil pH was the dominant control on ACP responses (mean |SHAP| = 0.088) and clay content on ALP responses (0.062), each ranking first across all five best-performing XGBoost configurations, indicating divergent driver hierarchies for the two enzymes. In the machine-learning analysis, ALP suppression was concentrated in clay-rich soils, whereas low-clay soils showed neutral-to-positive responses. By identifying where MP contamination most strongly perturbs phosphatase-mediated P mobilization, our findings connect a terrestrial contaminant to diffuse nutrient pollution of receiving waters and provide a transferable framework for contaminant–water-quality synthesis.
  • Climate-driven shifts in the distribution of the rare earth element hyperaccumulator fern Blechnopsis orientalis: Implications for phytomining and conservation strategies in China
    Ren, Jun; Li, Suhang; Jiang, Longcheng; Yang, Qiong; Cai, Yudan; Chen, Liyuru; Xiang, Yangzhou; Yao, Bin; Li, Yuan
    Environmental and sustainability indicators (Elsevier, 2026)
    Rising global temperatures are altering species distributions, yet the long-term dynamics of pteridophytes remain poorly documented. Here, we project the potential habitat dynamics of Blechnopsis orientalis, a fern with exceptional rare earth element (REE) accumulation capacity and promising applications in green phytomining, across China under both contemporary and future climate scenarios. Using 646 valid occurrence records and ten comprehensively selected environmental predictors, we applied a parameter-optimized MaxEnt model (RM = 1, FC = QHPT, AUC = 0.947) to evaluate habitat suitability. For future trend simulation, four representative CMIP6 scenarios (SSP126, SSP245, SSP370, and SSP585) were selected, and predictions were analyzed for three time slices (2050s, 2070s, and 2090s). Our principal findings are: (1) Bio9 (Mean Temperature of Driest Quarter) and Bio12 (Annual Precipitation) are the primary drivers of the species' distribution, with a cumulative contribution of 86.7%, confirming temperature and water availability as core limiting factors. (2) Contrary to the widely observed range contraction in most rare plants, B. orientalis exhibits a significant net expansion under all climate scenarios, with the maximum projected expansion area reaching 59.64 × 104 km2, while the contracted area remains below 0.83 × 104 km2. (3) The centroid of suitable habitat shifts generally northwestward, with displacement distances increasing with scenario severity and reaching up to 108.75 km under SSP585-2090s. These findings indicate that B. orientalis possesses strong adaptive capacity to climate warming, and its rare-earth hyperaccumulation function may impose additional constraints on its climatic niche through a transpiration-dependent mechanism. Based on these comprehensive results, we propose three systematic conservation and development schemes: (i) prioritizing the interconnected provincial border zones in southwestern South China as core functional areas for in situ conservation of wild populations; (ii) developing the inland interprovincial junction zone in eastern South China into an official pilot site for the application and dissemination of rare-earth phytomining technology; and (iii) establishing specialized germplasm preservation bases along the axis of the population centroid shift.
  • Oat green manure improves soil health indicators and lentil yield with GHG trade‐offs under rainfed semiarid conditions
    Mirzaei, Morad; Burchill, William; Borgatti, Daniele; Hassine, Mortadha Ben; Li, Yuan; Allam, Mohamed; Sarkar, Sudip; Baćanović‐Şişic, Jelena; Azadi, Sara; Mancinelli, Roberto; Radicetti, Emanuele
    Agronomy journal : 5 (American Society of Agronomy, 2026)
    Green manuring may improve soil properties, but its effects on crop productivity and greenhouse gas (GHG) emissions remain poorly understood in rainfed semiarid systems. This study evaluated oat (Avena sativa L.) as green manure on soil properties, GHG emissions, and lentil (Lens culinaris Medik.) yield in a rainfed semiarid cropping system in western Iran. A field experiment was conducted in 2021 and 2022 evaluating four oat biomass incorporation rates (0, 2, 4, and 8 Mg of dry weight ha−1). A randomized complete block design with four replications was employed. Oat biomass was incorporated prior to lentil sowing to a depth of 30 cm. Soil CO2 and N2O fluxes were measured during lentil cultivation, while lentil yield, N uptake, and soil chemical properties were evaluated at harvesting. Regression analysis showed that soil organic carbon and total nitrogen increased linearly with oat biomass incorporation rate, while available water, aggregate stability, and grain yield showed quadratic responses, indicating improved soil functioning and crop productivity but with marginal gains at higher biomass rates. Lentil N uptake increased linearly with increasing oat biomass incorporation, confirming improved nutrient acquisition. Soil CO2 and N2O emissions also increased with higher biomass inputs, although their responses varied between growing seasons. The principal component analysis indicated increasing oat biomass incorporation was associated with improvements in soil fertility and lentil performance, but also with greater GHG emissions. Overall, oat green manure improved soil fertility and lentil productivity under semiarid rainfed conditions, but residue management should be optimized to balance agronomic benefits with GHG trade-offs.
  • Kokonaiskestävyyden arviointityökalu uusien liiketoimintamahdollisuuksien arviointiin : käsikirja yrityksille
    Rikkonen, Pasi; Karikallio, Hanna-Maija (Luonnonvarakeskus, 2025)
  • Metsäsektorin suhdannekatsaus 2026-2027
    Kniivilä, Matleena; Viitanen, Jari; Haltia, Emmi; Kallioniemi, Marja; Kilpeläinen, Harri; Leppänen, Jussi; Mutanen, Antti; Niinistö, Tuomas; Routa, Johanna; Toikka, Markus; Viitala, Esa-Jussi
    Luonnonvara- ja biotalouden tutkimus : 59/2026 (Luonnonvarakeskus, 2026)
    Metsäsektorin suhdannekatsauksessa tuotetaan tietoa metsäsektorin nykytilanteesta ja lähiajan näkymistä. Ennusteet perustuvat julkisiin tilastoihin, maailmantalouden kehitysennusteisiin, eri lähteistä saatavaan metsäsektorin markkinainformaatioon sekä Luonnonvarakeskuksessa tehtäviin tutkimuksiin. Ennusteiden tekemisessä käytetään niin sanottua johdetun kysynnän periaatetta, jolloin kotimaan ja vientimarkkinoiden talouskehitysten vaihteluiden oletetaan heijastuvan metsäteollisuustuotteiden kysynnän kautta metsäteollisuuden tuotantoon ja kotimaan puumarkkinoille. Käsitys maailmantalouden ja vientimarkkinoiden talouskehityksestä muodostetaan eri organisaatioiden (esimerkiksi OECD, IMF, ETLA, Nordea, Suomen Pankki) ennusteiden perusteella. Tämän katsauksen ennusteet perustuvat syys-lokakuun 2026 tietoihin metsäsektorista ja ennusteisiin maailmantalouden kehityksestä vuosille 2026–2027. Metsäsektorin ennusteet vastaavat tutkijoiden käsitystä todennäköisimmästä kehityksestä. Ne ovat piste-ennusteita ja pohjautuvat vientimarkkinoiden kasvuennusteisiin sekä muihin taustaoletuksiin markkinoiden kehityksestä. Syksyllä 2026 merkittävimmät ennusteisiin ja talouskehitykseen liittyvät epävarmuustekijät liittyvät Iranin sodan vaikutuksiin energiamarkkinoilla, Yhdysvaltojen kauppapolitiikkaan, Kiinan talouden kasvuvauhtiin, Venäjän hyökkäyssodan jatkumiseen Ukrainassa sekä näiden vaikutuksiin maailmankauppaan, inflaatioon ja investointeihin.