Contrasting impacts of grass species on nitrogen cycling in a grazed Sudanian savanna

Contrasting impacts of grass species on nitrogen cycling in a grazed Sudanian savanna

Detalles Bibliográficos
Parent link:Acta Oecologica: Scientific Journal
Vol. 63.— 2015.— [P. 8-15]
Autor Corporativo: Национальный исследовательский Томский политехнический университет (ТПУ) Институт природных ресурсов (ИПР) Кафедра геоэкологии и геохимии (ГЭГХ)
Outros autores: Ye Lambienou, Abbadie Luc, Bardoux Gerard, Lata Zh.-K. Zhan-Kristof, Nacro Hassan Bismarck, Masse Dominique, de Parseval Henri, Barot Sebastien
Summary:Title screen
We investigated the impact of perennial and annuals grass species on nitrogen cycling in a Sudanian savanna of Burkina Faso. We also analysed how the local context in terms of grazing and soil properties modifies these impacts. We selected four plots differing both by the intensity of grazing by cattle and soil depth, and used soil and grass biomass 15N as integrative indicators of N cycle. If perennials are able to foster a more efficient nitrogen cycling there should be lower 15N abundances in their biomass and soil. If soil depth and cattle pressure significantly modify nitrogen fluxes, soil depth and cattle pressure should influence 15N signatures. Our results suggest that perennial grasses are more conservative for nitrogen (inhibition of nitrification, less leaching via a perennial root system, slower cycling).
Режим доступа: по договору с организацией-держателем ресурса
Publicado: 2015
Subjects:
электронный ресурс
труды учёных ТПУ
азот
многолетние травы
однолетники
Acceso en liña:http://dx.doi.org/10.1016/j.actao.2015.01.002
Formato: Electrónico Capítulo de libro
KOHA link:https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=644759

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