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(Article of periodic en Anglais - 2014)

Document title

The response of soil organic carbon and nitrogen 10 years after returning cultivated alpine steppe to grassland by abandonment or reseeding

Authors(s) and Affiliation(s)

SHANG Z.-H. (1) ; CAO J.-J. (1) ; GUO R.-Y. (2) ; LONG R.-J. (1) ; DENG B. (3) ;
(1) State Key Lab. of Grassland Agro-ecosystems, College of Pastoral Agriculture Science and Technology, Univ., Lanzhou, CHINE
(2) Inst. of Arid Agroecology, School of Life Sciences, Univ., Lanzhou, CHINE
(3) The Inst. of Grassland Science, College of Animal Science & Technology, China Agricultural Univ., Beijing, CHINE

Abstract

This study reported on the effects on the soil carbon and nitrogen status of alpine steppe soils from 2 restoration methods, reseeding grasses and abandonment. The AA. selected 4 study sites on the north slope of Qilian Mountain : native alpine steppe, cropland of 40 years, former oat cropland reseeded with the grass (Elymus sibiricus) 10 years ago, and cropland abandoned 10 years ago. This experiment measured the soil physical, carbon and nitrogen properties of all selected plots. Ten years after restoration by reseeding or abandonment had resulted in the return of cropland to a perennial grass community through succession, with total soil carbon and nitrogen returning to more than 70% of the original grassland plots. The reseeding method benefited soil carbon and nitrogen more than abandonment after 10 years. The light fraction organic carbon, microbial biomass carbon and microbial biomass nitrogen recovered more quickly than soil organic carbon and total soil nitrogen. In conclusion, the AA. recommend the 2 methods (reseeding and abandonment) as suitable methods to engineer the returning of cultivated land back to grassland in the alpine steppe

Source

Article of periodic

published at : Catena / ISSN 0341-8162

Editor : Catena, Cremlingen-Destedt - ALLEMAGNE (1973)

Millesime : 2014, no119 [pp. 28-35]

Bibliographic references : 1 p.

Collation : 7 fig., 4 tabl.

Language

Anglais

INIST-CNRS, Cote INIST : 16767

Digital Object Identifier

Go to electronic document thanks to its DOI : doi:10.1016/j.catena.2014.03.006

Tous droits réservés © Prodig - Bibliographie Géographique Internationale (BGI), 2014
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