| 生物土壤与生态 |
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| Biological Soil Crusts: A Significant Food Source for Insects in the Arid Desert Ecosystems |
| LI Xin-rong1; CHEN Yin-wu1,2; JIA Rong-lang1 |
| 1.Shapotou Desert Research and Experiment Station, Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Sciences, Lanzhou 730000, China; 2.Henan University of Science and Technology, Luoyang 471003, Henan, China |
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Abstract Desert landscape are patchy and covered by two types of plant communities because of soil water limitation and few rainfall: macrophytic patches, consisting of xerophytic shrubs and herbs and microphytic patches, consisting of soil covered with biological soil crusts (BSCs) and their constitutional organism. BSCs are complex associations of moesses, lichens, liverworts, cyanobacteria, algae, fungi and bacteria that are intimately bound onto surface soils. The significances of BSCs in soil process, soil bio-geochemical cycling, hydrological and ecological processes in the arid desert ecosystems have been numerously documented. In this study, as a source of food web for desert insects, the evidence of BSCs has been found by experimental observation. This finding supplemented our new knowledge on linkage between BSCs and insects in desert ecosystems.
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Received: 01 January 1900
Published: 20 March 2008
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2008, Vol. 28 
