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1,306 results on '"Dong, Hailiang"'

1. Analysis of the Influence of Environmental Factors on the Ice Melting Temperature Rise Characteristics for Transmission Lines

Author

Dong, Hailiang, Peng, Yanjun, Wang, Lu, Chen, Jianxi, Pan, Ningbo, Zhang, Jiasheng, Angrisani, Leopoldo, Series Editor, Arteaga, Marco, Series Editor, Chakraborty, Samarjit, Series Editor, Chen, Shanben, Series Editor, Chen, Tan Kay, Series Editor, Dillmann, Rüdiger, Series Editor, Duan, Haibin, Series Editor, Ferrari, Gianluigi, Series Editor, Ferre, Manuel, Series Editor, Jabbari, Faryar, Series Editor, Jia, Limin, Series Editor, Kacprzyk, Janusz, Series Editor, Khamis, Alaa, Series Editor, Kroeger, Torsten, Series Editor, Li, Yong, Series Editor, Liang, Qilian, Series Editor, Martín, Ferran, Series Editor, Ming, Tan Cher, Series Editor, Minker, Wolfgang, Series Editor, Misra, Pradeep, Series Editor, Mukhopadhyay, Subhas, Series Editor, Ning, Cun-Zheng, Series Editor, Nishida, Toyoaki, Series Editor, Oneto, Luca, Series Editor, Panigrahi, Bijaya Ketan, Series Editor, Pascucci, Federica, Series Editor, Qin, Yong, Series Editor, Seng, Gan Woon, Series Editor, Speidel, Joachim, Series Editor, Veiga, Germano, Series Editor, Wu, Haitao, Series Editor, Zamboni, Walter, Series Editor, Tan, Kay Chen, Series Editor, Yang, Qingxin, editor, and Li, Jian, editor

Published
2025
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21. Mountain biodiversity and ecosystem functions: interplay between geology and contemporary environments

Author

Hu, Ang, Wang, Jianjun, Sun, Hang, Niu, Bin, Si, Guicai, Wang, Jian, Yeh, Chih-Fu, Zhu, Xinxin, Lu, Xiancai, Zhou, Jizhong, Yang, Yongping, Ren, Minglei, Hu, Yilun, Dong, Hailiang, and Zhang, Gengxin

Subjects
Life on Land, Bacteria, Biodiversity, China, Climate, Climate Change, Ecosystem, Environmental Microbiology, Geology, Plants, Soil, Temperature, Environmental Sciences, Biological Sciences, Technology, Microbiology
Abstract

Although biodiversity and ecosystem functions are strongly shaped by contemporary environments, such as climate and local biotic and abiotic attributes, relatively little is known about how they depend on long-term geological processes. Here, along a 3000-m elevational gradient with tectonic faults on the Tibetan Plateau (that is, Galongla Mountain in Medog County, China), we study the joint effects of geological and contemporary environments on biological communities, such as the diversity and community composition of plants and soil bacteria, and ecosystem functions. We find that these biological communities and ecosystem functions generally show consistent elevational breakpoints at 2000-2800 m, which coincide with Indus-Yalu suture zone fault and are similar to the elevational breakpoints of soil bacteria on another mountain range 1000 km away. Mean annual temperature, soil pH and moisture are the primary contemporary determinants of biodiversity and ecosystem functions, which support previous findings. However, compared with the models excluding geological processes, inclusion of geological effects, such as parent rock and weathering, increases 67.9 and 35.9% of the explained variations in plant and bacterial communities, respectively. Such inclusion increases 27.6% of the explained variations in ecosystem functions. The geological processes thus provide additional links to ecosystem properties, which are prominent but show divergent effects on biodiversity and ecosystem functions: parent rock and weathering exert considerable direct effects on biodiversity, whereas indirectly influence ecosystem functions via interactions with biodiversity and contemporary environments. Thus, the integration of geological processes with environmental gradients could enhance our understanding of biodiversity and, ultimately, ecosystem functioning across different climatic zones.

Published
2020

31. Eco-engineering approaches for ocean negative carbon emission

Author

Zhang, Chuanlun, Shi, Tuo, Liu, Jihua, He, Zhili, Thomas, Helmuth, Dong, Hailiang, Rinkevich, Buki, Wang, Yuze, Hyun, Jung-Ho, Weinbauer, Markus, López-Abbate, Celeste, Tu, Qichao, Xie, Shucheng, Yamashita, Youhei, Tishchenko, Pavel, Chen, Quanrui, Zhang, Rui, and Jiao, Nianzhi

Published
2022
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45. Contrasting Effects of Catecholate and Hydroxamate Siderophores on Molybdenite Dissolution

Author

Guo, Dongyi, Sheng, Yizhi, Baars, Oliver, Duckworth, Owen W., Chen, Ping, Zhu, Zihua, Zhang, Xiaowen, Chukwuma, Emmanuel, Gooden, David M., Verbrugge, Jack, and Dong, Hailiang

Abstract

Molybdenum (Mo) is essential for many enzymes but is often sequestered within minerals, rendering it not readily bioavailable. Metallophores, metabolites secreted by microorganisms and plants, promote mineral dissolution to increase the metal bioavailability. However, interactions between metallophores and Mo-bearing minerals remain unclear. In this study, catecholate protochelin and hydroxamate desferrioxamine B (DFOB) were utilized to examine their effects on dissolution of the common Mo-bearing mineral, molybdenite (MoS2), under both oxic and anoxic conditions. Protochelin promoted molybdenite dissolution under oxic conditions, with the formation of MoO3on the surface and Mo-siderophore complexes in solution. This was attributed to air-oxidation of both molybdenite and protochelin, as evidenced by lack of dissolution under anoxic conditions but enhanced dissolution by either preoxidized protochelin or preoxidized molybdenite. Liquid chromatography–mass spectroscopy, X-ray photoelectron spectroscopy, and time-of-flight secondary ion mass spectrometry analyses revealed degradation of protochelin and adsorptions of its byproducts on molybdenite surface to promote dissolution. Conversely, DFOB inhibited molybdenite dissolution under both oxic and anoxic conditions, likely attributed to surface adsorption of DFOB and its weak complexation with Mo(VI) at the circumneutral pH. This work highlights the need to consider the balance between promoting and inhibitory effects of different metallophores on Mo-mineral dissolution.

Published
2025
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46. Effects of EDTA and Bicarbonate on U(VI) Reduction by Reduced Nontronite

Author

Wang, Shuaidi, Chen, Yu, Pan, Zezhen, Liu, Juan, Ding, Yuefei, Wang, Yuheng, Liu, Dong, Wu, Songlin, Hu, Dafu, Li, Runjie, Xia, Qingyin, Zhang, Limin, and Dong, Hailiang

Abstract

Widespread Fe-bearing clay minerals are potential materials capable of reducing and immobilizing U(VI). However, the kinetics of this process and the impact of environmental factors remain unclear. Herein, we investigated U(VI) reduction by chemically reduced nontronite (rNAu-2) in the presence of EDTA and bicarbonate. U(VI) was completely reduced within 192 h by rNAu-2 alone, and higher Fe(II) in rNAu-2 resulted in a higher U(VI) reduction rate. However, the presence of EDTA and NaHCO3initially inhibited U(VI) reduction by forming stable U(VI)–EDTA/carbonato complexes and thus preventing U(VI) from adsorbing onto the rNAu-2 surface. However, over time, EDTA facilitated the dissolution of rNAu-2, releasing Fe(II) into solution. Released Fe(II) competed with U(VI) to form Fe(II)–EDTA complexes, thus freeing U(VI) from negatively charged U(VI)–EDTA complexes to form positively charged U(VI)–OH complexes, which ultimately promoted U(VI) adsorption and triggered its reduction. In the NaHCO3system, U(VI) complexed with carbonate to form U(VI)–carbonato complexes, which partially inhibited adsorption to the rNAu-2 surface and subsequent reduction. The reduced U(IV) largely formed uraninite nanoparticles, with a fraction present in the rNAu-2 interlayer. Our results demonstrate the important impacts of clay minerals, organic matter, and bicarbonate on U(VI) reduction, providing crucial insights into the uranium biogeochemistry in the subsurface environment and remediation strategies for uranium-contaminated environments.

Published
2024
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