img

Wechat

Adv search

Journal of Desert Research ›› 2025, Vol. 45 ›› Issue (5): 253-265.DOI: 10.7522/j.issn.1000-694X.2025.00014

Previous Articles    

Effect of different precipitation gradients on community characteristics of ground-active arthropods under shrub microhabitats

Zhixia Guo1,2,3(), Rentao Liu1,2,3(), Wenzhi Zhao3,4   

  1. 1.College of Forestry and Prataculture /, Ningxia University,Yinchuan 750021,China
    2.School of Ecology and Environments /, Ningxia University,Yinchuan 750021,China
    3.Breeding Base for State Key Laboratory of Land Degradation and Ecological Restoration in Northwestern China, Ningxia University,Yinchuan 750021,China
    4.Northwest Institute of Eco-Environment and Resources,Chinese Academy of Sciences,Lanzhou 730000,China
  • Received:2024-07-14 Revised:2025-02-18 Online:2025-09-20 Published:2025-09-27
  • Contact: Rentao Liu

Abstract:

The objective of this study is to examine the effects of different precipitation gradients on the distribution of ground-active arthropods communities in shrub microhabitats, an investigation of ground-active arthropods abundance and diversity beneath the shrubs (Artemisia ordosica and Caragana korshinskii) and open spaces between shrubs was conducted a field experiment by using pitfall trapping method during three consecutive years in the arid, semiarid and semi-humid grassland ecosystem. Species composition, diversity distribution characteristics and influencing factors of terrestrial arthropods in shrub microhabitats with different precipitation gradients were investigated. The results showed that: in the arid grassland, there were significant differences in the composition of ground-active arthropods communities among different microhabitats; in the semiarid grassland, A. ordosica and CK were significant different from C. korshinskii; while in the semi-humid grassland, there were no significant differences among different microhabitats. “Bug island” effect of different shrubs on ground-active arthropods were non-significant in the semiarid grassland; in the arid and semi-humid grassland, C. korshinskii favored an increase in the number of individuals and group richness of ground-dwelling arthropods. The dbRDA results showed that TC, SM, and HR were important factors regulating the structure of the ground-dwelling arthropods communities among the different microhabitats under precipitation gradients. A comprehensive analysis showed that the differences in the composition of ground-dwelling arthropods communities in different microhabitats increased with the decrease in annual precipitation, and it was suggested that there was facilitative effect of C.korshinskii plantations on the abundance and richness of ground-active arthropods relative to A. ordosica in the arid and semi-humid grasslands.

Key words: precipitation, shrub, ground-active arthropods, characteristics of community

CLC Number: