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(Article of periodic en Anglais - 2013)

Document title

Shrub encroachment with increasing anthropogenic disturbance in the semiarid Inner Mongolian grasslands of China

Authors(s) and Affiliation(s)

PENG H.-Y. (1 2 3) ; LI X.-Y. (1 2) ; LI G.-Y. (2) ; ZHANG Z.-H. (2) ; ZHANG S.-Y. (2) ; LI L. (2) ; ZHAO G.-Q. (2) ; JIANG Z.-Y. (2) ; MA Y.-J. (1 2) ;
(1) State Key Lab of Earth Surface Processes and Resource Ecology, Normal Univ., Beijing, CHINE
(2) College of Resources Sciences and Technology, Beijing Normal Univ., Beijing, CHINE
(3) Inst. of Land Resources and Sustainable Development, Yunnan Univ. of Finance and Economics, Kunming, CHINE

Abstract

This study was conducted at the Farmland and Grassland Ecosystem Observation Station located in Taipus Banner, Inner Mongolia. The AA. investigated plant biomass, community characteristics, and water capturing capability of the shrub and interspace grass patches during the different transition states of Caragana microphylla Lam-encroached grassland in response to the intensity of anthropogenic disturbances. The results indicate that the number of plant species increased with the disturbance intensity at the shrub patches and that the total aboveground biomass (AB) significantly decreased from the slightly disturbed site to the moderately disturbed site, then significantly increased from the moderately disturbed site to the seriously disturbed site. The total belowground biomass (BB) was much greater in the shrub patches than the interspace grass patches at the other 3 sites. The results also suggest that grass or shrub dominance were alternative stable states in the processes of shrub encroachment but that a threshold existed during state transition.

Source

Article of periodic

published at : Catena / ISSN 0341-8162

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

Millesime : 2013, vol. 109 [pp. 39-48]

Bibliographic references : 1 p.

Collation : 10 fig., 2 tabl.

Language

Anglais

INIST-CNRS, Cote INIST : 16767

Digital Object Identifier

Go to electronic document thanks to its DOI : doi:10.1016/j.catena.2013.05.008

Tous droits réservés © Prodig - Bibliographie Géographique Internationale (BGI), 2013
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