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210 results on '"Zhao, Yunge"'

8. Effects of Artificial Cyanobacterial Crust on Soil Wind Erosion Control in Arid Regions

Author

Huang Minghui, Zhao Yunge, and Gao Liqian

Subjects
farmland wind erosion, artificial cultivation, cyanobacterial crust, threshold wind velocity, wind erosion rate, arid region, Environmental sciences, GE1-350, General. Including nature conservation, geographical distribution, QH1-199.5
Abstract

[Objective] The influence factors of artificial cyanobacterial crust on soil threshold wind velocity and wind erosion rate, and the effects of wind erosion prevention and control were analyzed, and the feasibility of using artificial cyanobacterial crust to prevent and control wind erosion on farmland soil was explored, in order to provide a new idea for farmland soil wind erosion prevention and control. [Methods] The effects of five inoculum amounts of cyanobacterial liquid, which were 400, 600, 800, 1 000, 1 200 ml/m2, on the formation of cyanobacterial crust on farmland soil were investigated. The effects and feasibility of using artificial cyanobacterial crust to reduce soil wind erosion were tested and estimated using wind tunnel tests. [Results] Cyanobacterial crusts of different coverages could be formed under outdoor conditions by inoculating the soil with cyanobacteria liquid having different inoculum amounts. When the cyanobacteria inoculum amount was 1 200 ml/m2, the coverage could reach 30% after 14 days of cultivation, and the coverage was greater than 60% after 50 days of cultivation. The biomass and thickness of the artificial cyanobacteria crust were 52 and 9 times of that of the control, respectively (p

Published
2023
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36. Enhanced Recovery of Biological Soil Crusts After Disturbance

Author

Zhao, Yunge, Bowker, Matthew A., Zhang, Yuanming, Zaady, Eli, Caldwell, Martyn M., Series editor, Díaz, Sandra, Series editor, Heldmaier, Gerhard, Series editor, Jackson, Robert B., Series editor, Lange, Otto L., Series editor, Levia, Delphis F., Series editor, Mooney, Harold A., Series editor, Schulze, Ernst-Detlef, Series editor, Sommer, Ulrich, Series editor, Weber, Bettina, editor, Büdel, Burkhard, editor, and Belnap, Jayne, editor

Published
2016
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40. Effects of temperature and initial pH on the growth of four dominant cyanobacteria species in biological soil crusts.

Author

WANG Yifan, LI Xuan, LUO Shanshan, HUANG Zhuochao, Dingzhenyuzhen, ZHOU Nan, and ZHAO Yunge

Abstract

Biological soil crusts are of great significance for environment health and sustainable development in arid and semi-arid areas. Cyanobacteria, Microcoleus vaginatus, Scytonema sp., Nostoc sp., and Anabaena sp. are the dominant species in microbial community of biological soil crusts worldwide. Considering their broad application prospect, it is meaningful to cultivate them extensively. We examined the effects of temperature (10, 20, 25, 30, 35 T ) and initial pH (4, 6, 8, 10, 12) on biomass and solution pH towards the four species of cyanobacteria with liquid culture in laboratory. The results showed that the biomass of the four cyanobacterial species grew slowly under 20 T, and that all species could grow in 25-35 °C, with the highest growth rate at 25 and 30 °C. The optimum culture temperature of different cyanobacterial species was slightly different. The optimum culture temperature was 25-30 T for Scytonema sp. and Nostoc sp., and 30 T for M. vaginatus and Anabaena sp. The four cyanobacterial species had a strong ability to adjust solution pH and proliferate in five different initial pH conditions. The highest maximum biomass and specific growth rate were recorded in the culture environment with initial pH of 4, while the lowest maximum biomass and specific growth rate were observed in initial pH of 12. Our results would provide scientific basis for the propagation of dominant cyanobacteria in biological soil crusts. [ABSTRACT FROM AUTHOR]

Published
2024
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48. What is a biocrust? A refined, contemporary definition for a broadening research community

Author

Universidad de Alicante. Departamento de Ecología, Universidad de Alicante. Instituto Multidisciplinar para el Estudio del Medio "Ramón Margalef", Weber, Bettina, Belnap, Jayne, Büdel, Burkhard, Antoninka, Anita J., Barger, Nichole N., Chaudhary, V. Bala, Darrouzet-Nardi, Anthony, Eldridge, David J., Faist, Akasha M., Ferrenberg, Scott, Havrilla, Caroline A., Huber-Sannwald, Elisabeth, Issa, Oumarou Malam, Maestre, Fernando T., Reed, Sasha C., Rodríguez-Caballero, Emilio, Tucker, Colin, Young, Kristina E., Zhang, Yuanming, Zhao, Yunge, Zhou, Xiaobing, Bowker, Matthew A., Universidad de Alicante. Departamento de Ecología, Universidad de Alicante. Instituto Multidisciplinar para el Estudio del Medio "Ramón Margalef", Weber, Bettina, Belnap, Jayne, Büdel, Burkhard, Antoninka, Anita J., Barger, Nichole N., Chaudhary, V. Bala, Darrouzet-Nardi, Anthony, Eldridge, David J., Faist, Akasha M., Ferrenberg, Scott, Havrilla, Caroline A., Huber-Sannwald, Elisabeth, Issa, Oumarou Malam, Maestre, Fernando T., Reed, Sasha C., Rodríguez-Caballero, Emilio, Tucker, Colin, Young, Kristina E., Zhang, Yuanming, Zhao, Yunge, Zhou, Xiaobing, and Bowker, Matthew A.

Abstract

Studies of biological soil crusts (biocrusts) have proliferated over the last few decades. The biocrust literature has broadened, with more studies assessing and describing the function of a variety of biocrust communities in a broad range of biomes and habitats and across a large spectrum of disciplines, and also by the incorporation of biocrusts into global perspectives and biogeochemical models. As the number of biocrust researchers increases, along with the scope of soil communities defined as ‘biocrust’, it is worth asking whether we all share a clear, universal, and fully articulated definition of what constitutes a biocrust. In this review, we synthesize the literature with the views of new and experienced biocrust researchers, to provide a refined and fully elaborated definition of biocrusts. In doing so, we illustrate the ecological relevance and ecosystem services provided by them. We demonstrate that biocrusts are defined by four distinct elements: physical structure, functional characteristics, habitat, and taxonomic composition. We describe outgroups, which have some, but not all, of the characteristics necessary to be fully consistent with our definition and thus would not be considered biocrusts. We also summarize the wide variety of different types of communities that fall under our definition of biocrusts, in the process of highlighting their global distribution. Finally, we suggest the universal use of the Belnap, Büdel & Lange definition, with minor modifications: Biological soil crusts (biocrusts) result from an intimate association between soil particles and differing proportions of photoautotrophic (e.g. cyanobacteria, algae, lichens, bryophytes) and heterotrophic (e.g. bacteria, fungi, archaea) organisms, which live within, or immediately on top of, the uppermost millimetres of soil. Soil particles are aggregated through the presence and activity of these often extremotolerant biota that desiccate regularly, and the resultant living crust cove

Published
2022

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