Search Results - "Heli Peltola"

Seasonal soil moisture and drought occurrence in Europe in CMIP5 projections for the 21st century by Ruosteenoja, Kimmo, Markkanen, Tiina, Venäläinen, Ari, Räisänen, Petri, Peltola, Heli

“…Projections for near-surface soil moisture content in Europe for the 21st century were derived from simulations performed with 26 CMIP5 global climate models…”
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Mechanical stability of trees under static loads by Peltola, Heli M

“…Wind affects the structure and functioning of a forest ecosystem continuously and may cause significant economic loss in managed forests by reducing the yield…”
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Carbon and water exchange over a temperate semi-arid shrubland during three years of contrasting precipitation and soil moisture patterns by Jia, Xin, Zha, Tianshan, Gong, Jinnan, Wang, Ben, Zhang, Yuqing, Wu, Bin, Qin, Shugao, Peltola, Heli

“…•The semi-arid shrubland in northern China can be an annual sink or a source of CO2.•Spring soil moisture deficit reduced ecosystem production and water use…”
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Sensitivity of managed boreal forests in Finland to climate change, with implications for adaptive management by Kellomäki, Seppo, Peltola, Heli, Nuutinen, Tuula, Korhonen, Kari T, Strandman, Harri

“…This study investigated the sensitivity of managed boreal forests to climate change, with consequent needs to adapt the management to climate change. Model…”
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Seasonal variation in ecosystem water use efficiency in an urban-forest reserve affected by periodic drought by Xie, Jing, Zha, Tianshan, Zhou, Caixian, Jia, Xin, Yu, Haiqun, Yang, Bai, Chen, Jiquan, Zhang, Feng, Wang, Ben, Bourque, Charles P.-A., Sun, Ge, Ma, Hong, Liu, He, Peltola, Heli

“…•WUE remained nearly constant at low levels during extremely dry days.•WUE had a negative relationship with Ta and NDVI during extremely droughts.•High SWC…”
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Effects of forest conservation and management on timber, ecosystem carbon, dead wood and habitat suitability area in a boreal forest under climate change by Pikkarainen, Pikkarainen, Strandman, Harri, Vento, Eerik, Petty, Aaron, Tikkanen, Olli-Pekka, Kilpeläinen, Antti, Peltola, Heli

“…We used forest ecosystem model simulations to study how forest conservation and management intensity affected timber yield, ecosystem carbon stocks, amount of…”
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Early Field Performance of Small-Sized Silver Birch and Scots Pine Container Seedlings at Different Planting Depths by Laura Pikkarainen, Jaana Luoranen, Heli Peltola

“…Deep planting is recommended in Nordic countries only for normal-sized container seedlings planted on mounds. Its effects on smaller-sized seedlings are poorly…”
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Temporal and Spatial Change in Diameter Growth of Boreal Scots Pine, Norway Spruce, and Birch under Recent-Generation (CMIP5) Global Climate Model Projections for the 21st Century by Seppo Kellomäki, Harri Strandman, Tero Heinonen, Antti Asikainen, Ari Venäläinen, Heli Peltola

“…We investigated how climate change affects the diameter growth of boreal Scots pine (Pinus sylvestris L.), Norway spruce (Picea abies (L.) H. Karst.), and…”
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Consistency of video and photo surveys in measuring attractiveness of forest stands managed with varying intensities by Silvennoinen, Harri, Pikkarainen, Laura, Nakola, Heini, Koivula, Matti, Tyrväinen, Liisa, Tikkanen, Jukka, Chambers, Philip, Peltola, Heli

“…We evaluated the consistency of video, ordinary photo, and panoramic photo surveys in measuring the attractiveness (recreational use, scenic values etc.) of…”
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Evaluation of the productivity and costs of excavator-based mechanized tree planting in Finland based on automated data collection by Kemppainen, Kalle, Kärhä, Kalle, Laitila, Juha, Sairanen, Antti, Kankaanhuhta, Ville, Viiri, Heli, Peltola, Heli

“…The poor cost-effectiveness of mechanized planting (MECP) is the main reason for the low mechanization rate of planting. In this study, we investigated the…”
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Relationship between stand and landscape attributes and Ips typographus salvage loggings in Finland by Pulgarin Diaz, John Alexander, Melin, Markus, Ylioja, Tiina, Lyytikäinen-Saarenmaa, Päivi, Peltola, Heli, Tikkanen, Olli-Pekka

“…Disturbances caused by the European spruce bark beetle (SBB; Ips typographus L.) on Norway spruce (Picea abies (L.) H. Karst.), have increased immensely across…”
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Identifying Nutrient Export Hotspots Using a Spatially Distributed Model in Boreal-Forested Catchments by Antti Leinonen, Aura Salmivaara, Marjo Palviainen, Leena Finér, Heli Peltola, Annamari Laurén

“…The implementation of the Water Framework Directive (WFD) aimed to reduce nutrient export from catchments to water courses. Forest operations cause diffuse…”
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Comparison of planting success in one-year-old spring, summer and autumn plantings of Norway spruce and Scots pine under boreal conditions by Pikkarainen, Laura, Luoranen, Jaana, Kilpeläinen, Antti, Oijala, Teppo, Peltola, Heli

“…In Nordic countries, tree planting of seedlings is mainly performed during spring and early summer. Interest has increased in extending the planting window…”
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Modeling the effects of plant-interspace heterogeneity on water-energy balances in a semiarid ecosystem by Gong, Jinnan, Jia, Xin, Zha, Tianshan, Wang, Ben, Kellomäki, Seppo, Peltola, Heli

“…•We modeled the water-energy balances of a semiarid ecosystem.•The model integrated plant-interspace interactions with vertical exchange processes.•The…”
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Effects of nitrogen fertilization on the ground vegetation cover and soil chemical properties in Scots pine and Norway spruce stands by Jetsonen, Johanna, Laurén, Annamari, Peltola, Heli, Muhonen, Olli, Nevalainen, Juha, Ikonen, Veli-Pekka, Kilpeläinen, Antti, Tuittila, Eeva-Stiina, Männistö, Elisa, Kokkonen, Nicola, Palviainen, Marjo

“…The aim of this study was to investigate the short-term effects of nitrogen (N) fertilization intensity on the ground vegetation cover and soil chemical…”
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The 10-Year Return Levels of Maximum Wind Speeds under Frozen and Unfrozen Soil Forest Conditions in Finland by Mikko Laapas, Ilari Lehtonen, Ari Venäläinen, Heli M. Peltola

“…Reliable high spatial resolution information on the variation of extreme wind speeds under frozen and unfrozen soil conditions can enhance wind damage risk…”
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Effect of wind damage on the habitat suitability of saproxylic species in a boreal forest landscape by Zubizarreta-Gerendiain, Ane, Pukkala, Timo, Peltola, Heli

“…Many forest-dwelling species are dependent on deadwood. Sources of deadwood include competition- and senescence-related mortality of trees, and various…”
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The utility of fused airborne laser scanning and multispectral data for improved wind damage risk assessment over a managed forest landscape in Finland by Gopalakrishnan, Ranjith, Packalen, Petteri, Ikonen, Veli-Pekka, Räty, Janne, Venäläinen, Ari, Laapas, Mikko, Pirinen, Pentti, Peltola, Heli

“…Key message The potential of airborne laser scanning (ALS) and multispectral remote sensing data to aid in generating improved wind damage risk maps over large…”
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Spatiotemporal patterns of the gross primary production in the salt marshes with rapid community change: A coupled modeling approach by Ge, Zhen-Ming, Guo, Hai-Qiang, Zhao, Bin, Zhang, Chao, Peltola, Heli, Zhang, Li-Quan

“…•Coastal marsh community changes rapidly due to plant invasion and propagation.•Low-resolution satellite data with empirical method misestimate GPP of…”
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Controls of evapotranspiration and CO2 fluxes from scots pine by surface conductance and abiotic factors by Zha, Tianshan, Li, Chunyi, Kellomäki, Seppo, Peltola, Heli, Wang, Kai-Yun, Zhang, Yuqing

“…Evapotranspiration (E) and CO2 flux (Fc ) in the growing season of an unusual dry year were measured continuously over a Scots pine forest in eastern Finland,…”
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