N-pool in volcanic ash-derived soils in Chile and its changes in deforested sites

Autor:	Hugo Zunino, Silvia María Aguilera, Pedro Peirano, Gilda Borie
Rok vydání:	2002
Předmět:	Soil Science Mineralogy Ultisol Andisol complex mixtures Microbiology Soil quality Humus Soil management Environmental chemistry Soil water Humin Environmental science Soil fertility
Zdroj:	Soil Biology and Biochemistry. 34:1201-1206
ISSN:	0038-0717
DOI:	10.1016/s0038-0717(02)00052-4
Popis:	Changes in N-distribution patterns in volcanic-ash of Chile after deforestation of a primary forest were measured. There is a clear tendency towards the depletion of N linked to high molecular weight fractions (humin, humic acid fractions) after the disturbance. These changes are illustrated schematically in relation to N input and output and to rhizosphere behavior after deforestation. N-pool and its pattern distribution within soil organic macromolecules is postulated to be a good indicator of N-dynamics in soils, which could be applied to detect soil deterioration processes. As an experimental model, it is proposed to characterize organic-N as N-fulvic, N-humic, N-humin and light organic-N.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::680b04ca3de24f0ddcf55c9b128ef8c4 https://doi.org/10.1016/s0038-0717(02)00052-4 Zobrazit plný text záznamu Full Text from ScienceDirect