ISSN:
1432-0789
Keywords:
Organic N forms
;
Soil reclamation
;
Lignite mine soils
;
Amino acid N
;
Unknown hydrolysable N
;
Humus
Source:
Springer Online Journal Archives 1860-2000
Topics:
Biology
,
Geosciences
,
Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
Notes:
Abstract We studied the distribution of different forms of N in very young (0- to 7-year-old) soils from the Meirama lignite mine in northwest Spain. Total N increased rapidly with soil age, largely in the humic acid-associated fraction. Acid hydrolysis indicated that amino acid N and a hydrolysable unknown form of N increased with soil age. The fractionation reported by Bettany et al. (1980) indicated that alkali/pyrophosphate-extractable humus increased with soil age. All these data suggest that there is rapid stabilization of organic N during the first few years of evolution of these mine soils, to the extent that distribution of N forms in the 7-year-old soil is very similar to that in native soils.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00361403
