Mots-clés
Biodiversité Chine Domaine aride Dune Ecosystème Formation arbustive Impact Insecte Nei Menggu Propriétés du sol Sable Arid area Biodiversity China Dune Ecosystem Impact Inner Mongolia Insect Sand Scrub Soil properties Arena Biodiversidad Campo árido China Duna Ecosistema Formación arbustiva Impacto Insecto Propiedades del sueloThe bug island effect of shrubs and its formation mechanism in Horqin Sand Land, Inner Mongolia
Auteur(s) et Affiliation(s)
ZHAO, H.-L.
Cold and Arid Region Environmental and Engineering Research Inst., CAS, Lanzhou, Chine
LIU, R.-T.
Ningxia Univ., Yinchuan, Chine
Description :
In the moving sand dune of Horqin Sand Land, the diversity of the soil macro-arthropod communities beneath the canopies of 2 shrub species (Caragana microphylla and Salix gordejevii) and in open areas was investigated in order to determine the effect of shrubs on these soil communities. The results showed that the shrubs facilitated the aggregation of soil macro-arthropods, resulting in significantly higher diversity and individual density of macro-arthropods in the soil beneath the shrub canopy compared to the open areas. This is known as the bug island effect which resulted from the fertile island effect generated by these shrubs, i.e., reduced wind velocity, retained dust and sand, increased soil litter biomass and soil moisture, improved soil texture and soil fertility. Between the 2 shrub species investigated C. microphylla had a greater bug island effect than S. gordejevii, as C. microphylla had a higher fertile island effect than S. gordejevii.
Type de document :
Article de périodique
Source :
Catena (Giessen), issn : 0341-8162, 2013, vol. 105, p. 69-74, nombre de pages : 6, Références bibliographiques : 29 ref.
Date :
2013
Editeur :
Pays édition : Allemagne, Cremlingen-Destedt, Catena
Langue :
Anglais
Anglais
Droits :
Tous droits réservés © Prodig - Bibliographie Géographique Internationale (BGI)
Tous droits réservés © Prodig - Bibliographie Géographique Internationale (BGI)