WorldCat Identities

Hari, Pertti

Overview
Works: 36 works in 89 publications in 2 languages and 979 library holdings
Roles: Author, Editor, Contributor, Other
Publication Timeline
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Most widely held works by Pertti Hari
Boreal forest and climate change by Pertti Hari( )

17 editions published between 2008 and 2009 in English and held by 483 WorldCat member libraries worldwide

Offers insights into the climatological control of the carbon cycle in coniferous forests of northern Europe. This book analyses the space and time element level and ecosystems and boreal forests. It is suitable for students and climate modellers alike
Physical and physiological forest ecology by Pertti Hari( )

18 editions published between 2012 and 2013 in English and held by 382 WorldCat member libraries worldwide

This important contribution is the result of decades of theoretical thinking and high-value data collection by the University of Helsinki examining forest ecosystems in great detail. The ecology is dominated by a qualitative approach, e.g. species and vegetation zones, but in contrast quantitative thinking is characteristic in the exact sciences of physics and physiology. The editors have bridged the gap between ecology and the exact sciences with an interdisciplinary and quantitative approach. This book recognizes this discrepancy as a hindrance to fruitful knowledge flow between the disciplines, and that physical and physiological knowledge has been omitted from forest ecology to a great extent. Starting with the importance of mass and energy flows in the interactions between forest ecosystems and their environment, the editors and authors offer a strong contribution to the pioneer H.T. Odum and his work from over 50 years ago. This book introduces a holistic synthesis of carbon and nitrogen fluxes in forest ecosystems from cell to stand level during the lifetime of trees. Metabolism and physical phenomena give rise to concentration, pressure and temperature differences that generate the material and energy fluxes between living organisms and their environment. The editors and authors utilize physiological, physical and anatomical background information to formulate theoretical ideas dealing with the effects of the environment and the state of enzymes, membrane pumps and pigments on metabolism. The emergent properties play an important role in the transitions from detailed to more aggregate levels in the ecosystem. Conservation of mass and energy allow the construction of dynamic models of carbon and nitrogen fluxes and pools at various levels in the hierarchy of forest ecosystems. Testing the predictions of these theories dealing with different phenomena in forest ecosystems was completed using the versatile and extensive data measured at SMEAR I and II (Stations for Measuring Ecosystem Atmosphere Relations) and at six additional stands in Finland, and five stands in Estonia. The theories are able to predict fluxes at different levels in the forest ecosystem gaining strong corroboration in the numerous field tests. Finally, the combined results from different hierarchical levels in the forest ecosystem form the physical and physiological theory of forest ecology
Production process of Scots pine : geographical variation and models by Pertti Hari( Book )

7 editions published in 1996 in English and held by 22 WorldCat member libraries worldwide

Metsikön varhaiskehityksen dynamiikka( Book )

5 editions published in 1982 in Finnish and English and held by 16 WorldCat member libraries worldwide

Boreal forest and climate change( Book )

1 edition published in 2008 in English and held by 10 WorldCat member libraries worldwide

The Effects of air pollution on forests in Finland, 1900-2040( Book )

2 editions published in 1987 in English and held by 9 WorldCat member libraries worldwide

Structure, radiation and photosynthetic production in coniferous stands( Book )

3 editions published in 1985 in English and held by 7 WorldCat member libraries worldwide

An approach to the use of differential and integral calculus in plant autecology by Pertti Hari( Book )

2 editions published in 1976 in English and held by 7 WorldCat member libraries worldwide

Influence of some ecological factors and the seasonal stage of development upon the annual ring width and radial growth index by Pertti Hari( Book )

1 edition published in 1972 in English and held by 4 WorldCat member libraries worldwide

Influence of some ecological factors and the seasonal stage of development upon the annual ring width and radial growth index by Pertti Hari( Book )

2 editions published in 1972 in English and held by 3 WorldCat member libraries worldwide

An approach to the use of differential and integral calculus in plant autecology by Pertti Hari( Book )

1 edition published in 1976 in English and held by 3 WorldCat member libraries worldwide

A growth model for a biological population, applied to a stand of pine by Pertti Hari( Book )

2 editions published in 1968 in English and held by 2 WorldCat member libraries worldwide

Forest-atmosphere interactions and forest ecology research at SMEAR stations by Timo Vesala( )

1 edition published in 2001 in English and held by 1 WorldCat member library worldwide

A dynamic model of the daily height increment of plants by Pertti Hari( )

1 edition published in 1970 in English and held by 1 WorldCat member library worldwide

Instantaneous PAR estimated using long records of daily temperature and rainfall by Pekka Nojd( )

1 edition published in 2001 in English and held by 1 WorldCat member library worldwide

Boreal Forest and Climate Change. Advances in Global Change Research, Volume 34( )

1 edition published in 2008 in English and held by 1 WorldCat member library worldwide

An active co-operation between forest ecologists and physicist has continued for decades at the University of Helsinki. These scientists have the common vision that material and energy fluxes are the key to a proper understanding of natural phenomena. The authors of this book come from very different disciplines: tree ecophysiology, silviculture, aerosol physics, meteorology, soil science, microbiology, botany and applied electronics. However, the shared vision has resulted in coherent research which crosses the disciplinary bounders and has produced an integrated programme covering a range of temporal and spatial scales. The measurements at two long-term stations SMEARI and II have been designed to study material and energy fluxes over forests at two geophysical locations. The result is a unique data set, providing insights into the climatological control of the carbon cycle in coniferous forests of northern Europe. The analysis starts from the space and time element level and is extended via ecosystems to boreal forests. The predictive power of the several theories proposed is high. There are several crucial feedbacks from forests to the climate system. The mechanisms for those feedbacks are elaborated in the book: they involve changes in the carbon cycle, albedo, N2O emissions and the production of aerosols. Much of this work is new and the feedback relationships have not yet incorporated in models of the climate system. The book will be an important introduction for students and climate modellers alike, providing conceptual tools and ideas that are broadly applicable to terrestrial systems
An Approach to the use of differential and integral calculus in plant autecology by Pertti Hari( Book )

1 edition published in 1976 in English and held by 1 WorldCat member library worldwide

"Tässä seison enkä muuta voi" : kokoelma väitöslektioita vuosilta 1984-93( Book )

1 edition published in 1994 in Finnish and held by 1 WorldCat member library worldwide

Systems concepts in theoretical plant ecology by Pertti Hari( Book )

1 edition published in 1981 in English and held by 1 WorldCat member library worldwide

 
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Boreal forest and climate change Boreal forest and climate change
Covers
Boreal forest and climate change
Alternative Names
Hari, Pertti Kaarlo Juhani.

Pertti Hari Finnish mathematician and forest ecologist, professor emeritus of forest ecology (University of Helsinki)

Pertti Hari suomalainen matemaatikko ja metsäekologi, Helsingin yliopiston metsäekologian emeritusprofessori

Languages