BVOC emissions, synthesis, storages, stem VOC's

My research focuses on volatile organic compound (VOC) emissions from boreal forests. I'm especially interested on the emissions from woody plant parts such as living tree stems and how they vary temporally and spatially. I also study how VOC synthesis, storages and emissions are linked to each other and how they change during the annual cycle.

  • +358 (0)2 941 58106
  • Viikki, B building room 321
  • ORCID: 
  • More information in research database TUHAT

Ecosystem ecology, Carbon and Nitrogen budgets of forest - peatland ecotone, Tropospheric ozone

I am studying the effects of drought on CO2, CH4, and N2O dynamics along a boreal forest/mire ecotone. The ecotone is an ecological tension between habitats. In forest/mire transition, below-ground features of poorly drained peatlands overlap with the above-ground features of well drained forests.

Greenhouse gas dynamics of forest/mire transitions are poorly known, because of the relatively narrow extent between forests and peatlands. Although in the scale of boreal forest, the forest/mire transition covers large areas. For example in Finland the forest/mire transition covers approximately 3.1 Million ha, or 14 % of the total forest area.

  • +358 (0)45 1310 513
  • Viikki, B building room 441
  • ORCID: 
  • More information in research database TUHAT

Xylem, nutrition, tree growth modelling

Focused on the height growth decline of old-growth trees, my research centralizes on the hydraulic dynamics and nutrition conditions of the predominant tree species of Finland. Both field measurements and laboratory means are employed in my studies, yet in mathematics I the most trust.

Forest fires in the boreal zone

I am looking into the various short and long-term effects of forest fires on soil carbon and greenhouse gas fluxes in different regions of the boreal biome.

Tree ecophysiology, hydraulic conductance, root systems, drought stress

I am now focusing on the hydraulic conductance of the Scots pine root system, especially effects of the root length on hydraulic properties. In addition, i will cover the implication of hydraulic conductance of the root systems for the distribution of soil water and modeling draught.

Methane emissions in boreal forest, methanogenic microbes

In my thesis, I study the methane emissions of a boreal forest, focusing on the role of vegetation. The aim of my research is to reveal the biological sources of methane and identify methanogenic microbes in the soil and vegetation. Chamber measurements are the principal method in use.

Nitrogen cycling in boreal forests, open science

My research interest is in the interactions between forest plants, forest soil and the atmosphere. Functional balance of trees and elemental mass balances are fundamental concepts in my research. As a special topic, I am working on how to improve the reliability of chamber measurement techniques. Recently, my work has been concentrating more and more on open science and the intersection between the Arts and Science.

O3 and NOx interactions with foliage

My thesis work is on O3 and NOx interactions with foliage: improving current knowledge and models. I also work at AnaEE (Analysis and Experimentation on Ecosystems) a European infrastructure for experimental ecosystem research in its preparatory phase.

  • +358 (0)40 7200 924
  • ORCID: 
  • More information in research database TUHAT

 

 

Conifer oleoresin, resin dynamics, stem VOCs, tree water relations

In my PhD project I concentrate on conifer oleoresin: on it's dynamics and role in ecosystem. More precisely I look into the oleoresin based defence reactions in a tree, and it's effects on the stem VOC emissions. Also, the dynamics of oleoresin under different moisture and climatic conditions are a part of the project.

Tree root carbon dynamics in boreal forests

My research interests are tree root carbon dynamics and balance in boreal forest ecosystems. The aim of my research is to quantify and model carbon-related processes in pine roots in the framework of the whole tree carbon balance and to study the tree carbon dynamics in future climate conditions.

 

 

Forest Biomass and Carbon Sequestration, Forest ecosystem modelling

  • +358 (0)2 941 58647
  • kourosh.kabiri [at] helsinki.fi
  • Viikki, B building room 321
  • ORCID:
  • More information in research database TUHAT and the Forest Modelling group page

Vegetation and nutrient cycling in subarctic forests

  • +358 (0)50 4480 873
  • Viikki, B building room 321
  • ORCID: 0000-0001-8794-7990
  • More information in research database TUHAT

Water transport in coniferous trees

Forest modelling under climate change, remote sensing

My  thesis is working on the process-based modelling on forest under climate change, and also try to combine with remote sensing data to develop on a larger area.

BVOC production and emissions from soil processes 

Forest tree ecophysiology, nutrient balance

My main topic of study is carbohydrate and nitrogen balance between Pinus sylvestris and forest soil, and how these balances are modified by changing environment conditions. I am also developing different laboratory protocols, mainly biochemical analyses of pine needles.

  • +358 (0)400 931 078
  • Viikki, B building 310
  • ORCID: 
  • More information in research database TUHAT

 

Microbiology, Environmental Microbiology

I am a microbiologist and my research focuses on microbial ecology. In my thesis, I am studying soil fungal communities in boreal forests, how natural disturbances affect the communities and their functions.

Leaf optical properties

During my PhD and as a member of FLUO-SYNTHESIS project, I study the variation in leaf optical properties (absorption, fluorescence and reflectance spectra) across species, light gradients and in response to multiple sources of stress.

  • +358 504485845
  • Department of Biosciences, Viikinkaari 1 room 6414

  • ORCID: 
  • More information in research database TUHAT

Water relations of coniferous trees, phloem transport, tree gas exchange

I study the tree water and sugar relations with tree gas exchange in my PhD thesis. Currently, with my collegues I study the influence of fungus infection on water transport in Norway spruce, and the progress of belowground hydraulic conductance and stomatal conductance during growing season in Scots pine.

  • +358 (0)50 430 8316
  • Viikki, B building room 521
  • ORCID: 0000-0002-3674-4904
  • More information in research database TUHAT

Soil microbes in permafrost soil