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长期连续施用猪粪的旱地红壤肥力健康与花生产量研究 期刊论文
生态与农村环境学报, 2023, 卷号: 39, 期号: 4, 页码: 480-487
作者:  司绍诚;  涂晨;  吴宇澄;  李远;  骆永明
收藏  |  浏览/下载：59/0  |  提交时间：2024/01/26
旱地红壤  花生  长期定位试验  猪粪  土壤肥力健康指数  
耕地和草地土壤健康研究进展与展望 期刊论文
土壤学报, 2021, 页码: 19
作者:  司绍诚;  吴宇澄;  李远;  涂晨;  付传城;  骆永明
浏览  |  Adobe PDF(1167Kb)  |  收藏  |  浏览/下载：603/242  |  提交时间：2021/12/01
土壤健康  耕地  草地  可持续发展  生态系统功能  
土壤环境中微塑料污染:来源、过程及风险 期刊论文
土壤学报, 2021, 卷号: 58, 期号: 2, 页码: 281-298
作者:  杨杰;  李连祯;  周倩;  李瑞杰;  涂晨;  骆永明
浏览  |  Adobe PDF(4648Kb)  |  收藏  |  浏览/下载：1524/340  |  提交时间：2021/12/01
土壤环境  微塑料  环境风险  研究进展  重点方向  
食用蔬菜能吸收和积累微塑料 期刊论文
科学通报, 2019, 卷号: 64, 期号: 9, 页码: 928-934
作者:  李连祯;  周倩;  尹娜;  涂晨;  骆永明
收藏  |  浏览/下载：514/0  |  提交时间：2020/06/17
微塑料  生菜  聚苯乙烯微球  吸收  积累  健康风险  microplastics  lettuce  polystyrene microbeads  uptake  accumulation  human health risk  Microplastic (MP, 100 nm-5 mm) may present an attributable risk to ecosystem and human health, and its pollution has become a global environmental concern. Despite a wealth of information on the accumulation of MPs in aquatic species, there is no information on the uptake and accumulation of MPs by higher plants. Terrestrial edible plants are directly exposed to MPs when agricultural soil was applied with organic manure, sewage sludge as fertilizer or plastic mulching. In this paper, the uptake of two sizes of polystyrene (PS) microbeads (0.2 and 1.0 mum) and then their distribution and migration in an edible plant lettuce were firstly investigated based on laboratory experiments. We used fluorescent markers to track PS microbeads in plant tissues and found fluorescence to be a sensitive and reliable detection method. Sections from untreated control lettuce showed no autofluorescence. When roots were treated with fluorescently labeled PS microbeads, the microbeads could be identified by its fluorescence. Our main study investigated the uptake of 0.2 mum beads, as few luminescence signals were observed in lettuce roots for 1.0 mum beads in our experiment. We observed that 0.2 mum fluorescent microbeads were extracellularly trapped in the root cap mucilage (which is a highly hydrated polysaccharide) and a dark green tip (which was typical of lettuce roots exposed to label PS beads) was usually visible to the naked eye. Confocal images revealed that the PS luminescence signals were mainly located in the vascular system and on the cell walls of the cortex tissue of the roots, indicated that the beads passed through the intercellular space via the apoplastic transport system. Once inside the central cylinder, the 0.2 mum PS beads were transferred from the roots to the stems and leaves via the vascular system following the transpiration stream. We also observed that the PS beads adhered to one another and self-assembled systematically into grape-like and (chain) string-like clusters in the intercellular space of the root and stem vascular tissue of lettuce plant. In contrast to the root and stem, PS beads were dispersed in the leaf tissue. Here, for the first time we provide evidence of the adherence, uptake, accumulation, and translocation of submicrometer MPs within an edible plant. Our findings highlight the previously underappreciated human exposure pathway to MPs through the consumption of contaminated crops and emphasize the need for new management strategies to control the release of MPs waste products into the terrestrial environment. Ultimately, the potential impacts of low range sized MPs on food safety of crop plants and human health need to be urgently considered.  
黄河三角洲内陆到潮滩土壤中碳、氮元素的梯度分布规律 期刊论文
地球化学, 2014, 卷号: 43, 期号: 4, 页码: 338-345
作者:  李远;  章海波;  陈小兵;  涂晨;  骆永明
浏览  |  Adobe PDF(732Kb)  |  收藏  |  浏览/下载：868/242  |  提交时间：2015/07/30
土壤  总氮  有机碳  黄河三角洲  空间分布  
红壤连作花生不同生育期根际微生物区系变化研究       期刊论文
扬州大学学报(农业与生命科学版)  , 2011, 卷号: 32, 期号: 4  , 页码: 23-27+38
作者:  王小兵;  骆永明;  刘五星;  李振高
浏览  |  Adobe PDF(325Kb)  |  收藏  |  浏览/下载：1059/347  |  提交时间：2012/03/06
红壤  连作花生  生育期  根际微生物区系  Dgge