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Biochar to Reduce Fertilizer Use and Soil Salinity for Crop Production in the Yellow River Delta 期刊论文
JOURNAL OF SOIL SCIENCE AND PLANT NUTRITION, 2022, 页码: 12
作者:  Xiao, Liang;  Yuan, Guodong;  Feng, Lirong;  Shah, Ghulam Mustafa;  Wei, Jing
收藏  |  浏览/下载：20/0  |  提交时间：2022/08/13
Macroaggregates as biochemically functional hotspots in soil matrix: Evidence from a rice paddy under long-term fertilization treatments in the Taihu Lake Plain, eastern China 期刊论文
Applied Soil Ecology, 2019, 卷号: Vol.138, 页码: 262-273
作者:  Li, Z.;  Rui, Z.;  Zhang, D.;  Feng, X.;  Lu, H.
收藏  |  浏览/下载：9/0  |  提交时间：2019/11/21
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：63/0  |  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.  
基于高分辨质谱的土壤溶解性有机质化学多样性研究 学位论文
北京: 中国科学院生态环境研究中心, 2018
作者:  李晓明
收藏  |  浏览/下载：24/0  |  提交时间：2020/07/15
土壤溶解性有机质， 化学多样性，微生物多样性， 傅立叶变换离子回旋 共振质谱  decreased WIth IncreasIng Iron ComplexIng Index. PAtterns In Molecular PrOfiles IndicAted Dom In Paddy Soils To Become More RecalcItrAnt At Higher Soil C/n rAtio And Higher Soil Ph. furTherMore, PlAnt-derived polyPh.nols And Pyrogenic Dom Were retaIned Favorably By Iron And The ChemodiversIty Of Dom In Paddy Soil Increased WIth IncreasIng Soil C/n rAtios. These Results Provide Novel InFormAtion regardIng Dom Characteristics At a Molecular Level And Will InForm Better Global MAnagement Of Soil Carbon In Paddy Soil EcosysteMs Global. 2) Through The applicAtion Of Ft-icr-Ms, The ChemodiversIty Of Dom In Soil Subjected To Long-term OrgAnic Carbon And InOrgAnic Fertilizer Amendments Was Established. In Parallel, Bcc Was Assessed. Through This Coupled Approach It Was Established.thAt sustaIned OrgAnic Carbon Amendment Resulted In: SignificAntly (p < 0.05) Increased Total Carbon And Total nItrogen Reservoirs In Soil, Dom PrOfiles Of greAter ChemodiversIty, And Emergence Of RecalcItrAnt Dom Moieties (H/c < 1.5). In Contrast, Carbon And nItrogen Reservoirs In Soil Subjected To sustaIned InOrgAnic Fertilizer applicAtion Were Unaltered, While Soil OrgAnic Carbon ChemodiversIty Was Observed To Shift To Less RecalcItrAnt Dom Moieties (H/c rAtio > 1.5 And O/c rAtios < 0.5). furTherMore, sustaIned OrgAnic Carbon Amendment Shaped Bcc To a eutroPh.c stAte While Long-term Chemical fertilizAtion Directed The Bcc Towards An oligotroPh.c stAte. Higher connectivIty And Network complexIty Were Observed In OrgAnic Carbon Amended Soils. Dom-Bcc Network Analysis, IndicAtIng thAt Soil Microbes Had More Interaction WIth Dom Molecules followIng sustaIned OrgAnic mAtter Input. These Results Highlight The Potential For OrgAnic Carbon Amendments To Not Only Build Soil Carbon sTocks And Increase Their Resilience, But To Also Improve The Functional stAte Of Soil Microbial communIties. Key Words: Dom, ChemodiversIty, Microbial diversIty, Ft-icr Ms  
NITROGEN AND PHOSPHORUS LOSSES THROUGH RUNOFF FROM PADDY FIELDS WITH DIFFERENT WATER AND NITROGEN MANAGEMENTS 期刊论文
FRESENIUS ENVIRONMENTAL BULLETIN, 2018, 卷号: 27, 页码: 5212-5222
作者:  Jin Baoming;  Yang Shihong;  Xu Junzeng
收藏  |  浏览/下载：9/0  |  提交时间：2019/11/21
Effects of Fertilizer Broadcasting on the Excessive Use of Inorganic Fertilizers and Environmental Sustainability 期刊论文
SUSTAINABILITY, 2018, 卷号: 10
作者:  Rahman, K. M. Atikur[1];  Zhang, Dunfu[2]
收藏  |  浏览/下载：11/0  |  提交时间：2019/04/24
Balancing straw returning and chemical fertilizers in China: Role of straw nutrient resources 期刊论文
RENEWABLE & SUSTAINABLE ENERGY REVIEWS, 2018, 卷号: 81, 页码: 2695-2702
作者:  Yin, Huajun;  Zhao, Wenqiang;  Li, Ting;  Cheng, Xinying;  Liu, Qing
收藏  |  浏览/下载：22/0  |  提交时间：2020/03/26
氮肥管理措施对新疆膜下滴灌棉田温室气体排放的影响 学位论文
新疆乌鲁木齐: 中国科学院大学, 2017
作者:  马志雯
收藏  |  浏览/下载：33/0  |  提交时间：2018/12/29
Effects of straw and biochar addition on soil nitrogen, carbon, and super rice yield in cold waterlogged paddy soils of North China 期刊论文
JOURNAL OF INTEGRATIVE AGRICULTURE, 2017, 卷号: 16, 期号: 5, 页码: 1064-1074
作者:  Cui Yuefeng;  Meng Jun;  Wang Qingxiang;  Zhang Weiming;  Cheng Xiaoyi
收藏  |  浏览/下载：19/0  |  提交时间：2021/02/02

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