A5053175769- Peatlands and Wetlands Ecology
- Soil Carbon and Nitrogen Dynamics
- Fire effects on ecosystems
- Marine and coastal ecosystems
- Soil and Water Nutrient Dynamics
- Coastal wetland ecosystem dynamics
- Hydrology and Watershed Management Studies
- Plant Water Relations and Carbon Dynamics
- Botany and Plant Ecology Studies
- Photosynthetic Processes and Mechanisms
- Forest ecology and management
- Heavy metals in environment
- Algal biology and biofuel production
- Atmospheric and Environmental Gas Dynamics
- Microbial Community Ecology and Physiology
- Water Quality and Pollution Assessment
- Water Quality Monitoring and Analysis
- Rangeland and Wildlife Management
- Forest, Soil, and Plant Ecology in China
- Plant Parasitism and Resistance
- Tree-ring climate responses
- Tree Root and Stability Studies
- Growth and nutrition in plants
- Plant and Fungal Species Descriptions
- Leaf Properties and Growth Measurement
University of Eastern Finland
2020-2025
Joensuu Science Park
2024
Finland University
2020-2023
Zhejiang A & F University
2015-2018
Boreal peatlands are major sources of nitrogen (N), phosphorus (P) and dissolved organic carbon (DOC) to downstream aquatic ecosystems, forest harvesting generally further increases the loading DOC nutrients. Continuous cover forestry (CCF) is proposed be an environmentally more sustainable management option for peatland forests than conventional even-aged clear-cutting. However, impacts CCF on water quality, biodegradability consequent CO2 emissions from inland waters poorly known. We...
The past decades have witnessed an increase in dissolved organic carbon (DOC) concentrations the catchments of Northern Hemisphere. Increasing terrestrial productivity and changing hydrology may be reasons for increases DOC concentration. aim this study is to investigate impacts increased changed following climate change on concentrations. We tested quantified effects gross primary production (GPP), ecosystem respiration (RE) discharge boreal over 3 years. As catchment characteristics can...
Forests are increasingly exposed to extreme global warming-induced climatic events. However, the immediate and carry-over effects of events on forests still poorly understood. Gross primary productivity (GPP) capacity is regarded as a good proxy ecosystem's functional stability, reflecting its physiological response surroundings. Using eddy covariance data from 34 forest sites in Northern Hemisphere, we analyzed late-spring frost (LSF) growing season drought needle-leaf broadleaf forests....
Abstract Around 30% of peatland in Nordic and Baltic countries has been drained for forestry. Drained peatlands are major sources dissolved organic carbon (DOC) nutrients to surface waters, contributing global warming, eutrophication, brownification. However, the effects forest clearcutting changes water table on biodegradation DOC CO 2 poorly known. We collected peat columns from drained, uncut, clearcut forests a common garden experiment exposed them high low tables study levels production...
Boreal forests play a crucial role in emitting biogenic volatile organic compounds (BVOCs), which have both warming and cooling effects on the Earth's climate. These are among primary sources of secondary aerosols (SOAs). Plant-emitted BVOCs, such as isoprenoids (including isoprene, monoterpenes, sesquiterpenes), serve precursors to SOAs, significantly affecting air quality Recent research indicates that forest fires also long-term impacts BVOC emissions, influenced by frequency severity...
Abstract Key message During the first summer, wood biochar amendments increased soil temperature, pH, and CO 2 effluxes in a xeric boreal Scots pine forest. The increase of efflux could be largely explained by increases temperature. Higher application rates (1.0 vs 0.5 kg m −2 ) led to higher while pyrolysis temperature (500 or 650 °C) had no effect on efflux. Context Using as amendment has been proposed carbon sequestration soils. However, more rapid organic matter turnover after might...
Contamination by heavy metals is one of the most serious environmental problems generated from human activities. Because phytoremediation utilizes plants to uptake contaminants, it could potentially be used remediate metal-contaminated areas. A pot culture experiment with four levels cadmium (Cd) (0, 20, 40, and 80 mg Cd/kg dry soil) was conducted investigate Cd accumulation tolerance roots, shoots, leaves Lagerstroemia indica fauriei as well their potential for phytoremediation....
Abstract Peatlands are globally significant C storage because waterlogged conditions slow down organic matter (OM) decomposition. Changes in the water table (WT) of global warming or drainage, consecutive vegetation succession, and enhanced root exudation causing priming may transform peatlands from sinks to sources. We studied how glucose addition, WT, forest harvesting affect chemical composition peat decomposition rate by incubating columns collected drained clear‐cut (CC) forested (FD)...
Boreal peatlands are vast carbon (C) stores but also major sources of dissolved organic C (DOC) and nutrients to surface waters. Drainage forest harvesting accelerates DOC leaching. Continuous cover forestry (CCF) is considered cause fewer adverse environmental effects. Yet, the effects CCF on processes unrecognised. We study production quality in unharvested, CCF, clear-cut drained peatland forests a non-forested alluvial sedge fen. Parallel replicate peat columns with ground vegetation...
The new species Lagerstroemia densa from Daqing Mountain, Chongzuo City, Guangxi Zhuang Autonomic Region (China) is described and illustrated. morphological characteristics of the two morphologically similar are compared. resembles L. subcostata in leaf shape but differs mainly petal color, floral tube morphology indumentum, capsule, to excelsa lobes inflorescences, which it by its glabrous, acute leaves, racemiform glabrous calyx lobes.
Increases in dissolved organic carbon (DOC) have occurred many freshwaters across Europe and North America over the last decades. Several mechanisms been proposed to explain these trends, but consensus regarding relative importance of recovery from acid deposition, climate change, land management remains elusive. To advance our understanding browning mechanisms, we explored DOC trends 13 nested boreal catchments, leveraging concurrent hydrological, chemical, terrestrial ecosystem data...
Abstract. Dissolved organic matter (DOM) degradation in freshwater rivers and streams plays a major role the global carbon cycle. However, little is known about how source composition of riverine DOM contribute to production greenhouse gases, especially high-latitude areas with large proportion carbon-rich peatlands. Here, we conducted for first time combination molecular-level characterization terrestrially derived potential dioxide (CO2) measurements pristine subarctic Finnish Lapland....
Abstract Over the past few decades, many catchments in Northern hemisphere have experienced increases dissolved organic carbon (DOC) concentrations, resulting a brownish color of water, known as aquatic browning. Several mechanisms been proposed to explain browning, but consensus regarding relative importance recovery from acid deposition, climate change, and land management remains elusive. To advance our understanding browning mechanisms, we explored DOC trends across 13 nested boreal...
This paper presents data for the assessment of a portable UV-Vis spectrophotometer's performance on predicting stream water DOC and Fe content. The dataset contains concentrations by laboratory methods, in-situ ex-situ spectral absorbances, monitoring environmental indexes such as depth, temperature, turbidity voltage. records in Yli-Nuortti river (Cold station, Finland) took place during hydrological year 2018-2019 Krycklan (C4 C5, Sweden) years 2016-2019. analyses were conducted with 'pls'...
本论文以布朗葡萄藻(Botryococcus braunii)357株为材料，研究了7种光质白光、红光、蓝光、混光1(红:蓝 = 4:1)、混光2(红:蓝 2:1)、绿光及黄光对藻细胞生长和胞内几种有机物质含量的影响。结果表明：在7种光质培养下，细胞密度和生物量在蓝光下最高，OD680和干重分别可达到1.31和2.56 g∙L−1，高于其他光质；多糖含量在白光下最高，其含量达到0.94%；可溶性蛋白含量在红光最高，为0.51%；叶绿素和类胡萝卜素的含量则在混光1下最高，分别达到1.84%和1.07%；在混光1下的总脂和总烃含量最高，分别为25.02%、25.10%，高于其他光质。这些结果将为布朗葡萄藻光生物反应器的开发，及其生长调控与大规模培养提供依据。 In this study, the influence of different light qualities on growth and organics contents Botryococcus braunii 357 were investigated. Seven including white, red,...