Is there more soil carbon under nitrogen-fixing trees than under non-nitrogen-fixing trees in mixed-species restoration plantings?

Autor:	Jason Beringer, Marianne Hoogmoed, Patrick J. Baker, Shaun Cameron Cunningham, Timothy R. Cavagnaro
Rok vydání:	2014
Předmět:	geography geography.geographical_feature_category Ecology Agroforestry Soil carbon Carbon sequestration complex mixtures Forest restoration Agronomy Soil water Environmental science Afforestation Animal Science and Zoology Ecosystem Agronomy and Crop Science Nitrogen cycle Riparian zone
Zdroj:	Agriculture, Ecosystems & Environment. 188:80-84
ISSN:	0167-8809
Popis:	Afforestation of agricultural land provides an important opportunity to mitigate climate change by storing carbon (C) in both plant biomass and the soil. Here we present results of a study in which we sought to determine whether soil under nitrogen(N)-fixing trees contained more C than soil under non-N-fixing trees in mixed-species plantings, and thus if inclusion of N-fixers is beneficial in terms of increasing soil C sequestration. Soils were sampled directly beneath N-fixing and non-N-fixing tree species in riparian and upland mixed-species plantings in southeastern Australia. Soil C and N contents were assessed at both the landscape and individual planting scales. At the landscape scale, there were higher levels of soil C and N under N-fixing trees compared with non-N-fixing trees. At the individual planting scale, the patterns were less clear with both large increases and decreases occurring across the range of sites. The results presented here indicate that the inclusion of N-fixers may help to increase soil C, and N, but that the response may be site- and species-specific.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::e7ec3653b8c2f884acf0fb65d11ad6c2 https://doi.org/10.1016/j.agee.2014.02.013 Zobrazit plný text záznamu Full Text from ScienceDirect