Pekka Nygren - Concepedia

Author

Pekka Nygren

Also Known As

Finnish Society of Forest Science, Viikinkaari 6, FI-00790 Helsinki, Finland, Nygren, P., Nygren, Pekka, P Nygren, P. NYGREN, P. Nygren, PEKKA NYGREN, Pekka Nygren

Publications

Citations

H-Index

Concepts

All Affiliations

University of Helsinki University of Missouri Université des Antilles Earth University Institut National de la Recherche Agronomique

About

Pekka Nygren is an author at University of Helsinki specializing in botany, agricultural economics, and engineering.

Top Concepts

#	Concept	H-Index	Publications	Citations
1	Engineering	17	24	905
2	Natural Sciences	5	5	180
3	Health Sciences	3	3	113
4	Medicine	3	3	79
5	Public Health	3	3	112

Pekka Nygren

Publications

Citations

H-Index

Page 1

	Year	Citations
Components of functional-structural tree models Risto Siev�nen, Eero Nikinmaa, Pekka Nygren, Annals of Forest Science	2000	211
Transfer of nitrogen from a tropical legume tree to an associated fodder grass via root exudation and common mycelial networks Riina Jalonen, Pekka Nygren, Jorge Sierra Plant Cell & Environment BiogeochemistryTropical Legume TreeEngineeringPlant-soil InteractionBotany	2009	113
Coarse root architecture of three boreal tree species growing in mixed stands Tuomo Kalliokoski, Pekka Nygren, Risto Sievänen Silva Fennica Extensive Root SystemBotanyCoarse Root ArchitectureCivil EngineeringForestry	2008	109
Transfer of N fixed by a legume tree to the associated grass in a tropical silvopastoral system Jorge Sierra, Pekka Nygren Soil Biology and Biochemistry Tropical Silvopastoral SystemPlant-soil InteractionEngineeringBotanyPlant-soil Relationship	2006	103
Belowground interspecific competition in mixed boreal forests: fine root and ectomycorrhiza characteristics along stand developmental stage and soil fertility gradients Tuomo Kalliokoski, Taina Pennanen, Pekka Nygren, Plant and Soil Soil Fertility GradientsFine RootBelowground Interspecific CompetitionForest ProductivityForest Soil	2009	93
Symbiotic dinitrogen fixation by trees: an underestimated resource in agroforestry systems? Pekka Nygren, María P. Fernández, Jean‐Michel Harmand, Nutrient Cycling in Agroecosystems AgroforestryEngineeringBotanySymbiotic Dinitrogen FixationAgroecosystem	2012	88
Production and turnover of N2 fixing nodules in relation to foliage development in periodically pruned Erythrina poeppigiana (Leguminosae) trees Pekka Nygren, Carlos Ramírez Forest Ecology and Management BiologyBiogeochemistryEngineeringBotanyNatural Sciences	1995	70
Tree species diversity and forest structure in relation to microtopography in a tropical freshwater swamp forest in French Guiana P. Koponen, Pekka Nygren, Daniel Sabatier, Plant Ecology BiodiversityFrench GuianaBiogeographyForest ConservationForestry	2004	66
The role of nitrogen fixation and nutrient supply in some agroforestry systems of the Americas Donald Kass, R. Sylvester-Bradley, Pekka Nygren Soil Biology and Biochemistry AgroforestryBiogeochemistryNutrient SupplyAgroforestry SystemsAgroecosystem	1997	53
Nodulation and dinitrogen fixation of legume trees in a tropical freshwater swamp forest in French Guiana P. Koponen, Pekka Nygren, Anne Marie Domenach, Journal of Tropical Ecology EngineeringBotanyForestryPlant PathologyPlant-rhizobia Interaction	2003	53

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