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Ningxia University (2021)

Effect of Litter Decomposition of Caragana Korshinskii on Litter Arthropod Community

张安宁

Titre : Effect of Litter Decomposition of Caragana Korshinskii on Litter Arthropod Community

Auteur : 张安宁

Grade : Master 2021

Université : Ningxia University

Résumé partiel
To mitigate desertification and land degradation,the afforestation by native shrub Caragana korshinskii is often used as one of the most effective ways to attain ecological recovery in semiarid and arid desertified ecosystems.These shrub litter can thus shape the trophic structure within arthropod community and extend the food chain,and maintain the complexity and stability of fragile grassland ecosystems.Litter arthropod is sensitive to environmental changes.The abundance,richness,and diversity of litter arthropod are determined by the availability of soil microhabitat and food resources.Hence,the change in environmental properties and food resources caused by the decomposition of C.korshinskii litter will have significantly effect on the composition and diversity distribution of litter arthropod.Understanding the effects of decomposition of shrub litter on the abundance,richness,and diversity distribution of litter arthropod across semiarid and arid sites could be conducive to biological diversity conservation and associated grassland ecosystem functioning under future climatic changes.Using the litterbag method,we determine the decomposition rate and nutrient elements of litter,and investigated the composition and diversity of litter arthropod during litter decomposition in the semi-arid desertified grassland of Yanchi County and the arid desertified grassland of Urat County.

Mots clés : desert steppe ;litter arthropod ;litter decomposition ;Caragana korshinskii ;community structur

Présentation (CNKI)

Page publiée le 10 mars 2022