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Functional Ecology, Volume 39, Issue 5, Page 1274-1287, May 2025.Read the free Plain Language Summary for this article on the Journal blog. Abstract Interactions between plants and soil microorganisms in the rhizosphere are vital for maintaining the nutrient cycle and stability of terrestrial ecosystems. Nitrogen, closely related to carbon (C) cycling and ecosystem productivity, undergoes transformation by soil ...
Ru Wang +9 more
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Shuitu Baochi Xuebao, 2007 采用盆栽试验比较研究了等施用量及等氮量的硫包衣尿素(SCU)和普通尿素对水稻的增产效应以及氮肥利用效率的影响.结果表明:(1)在水稻生育前期,施用等氮量的SCU处理水稻生物量低于普通尿素处理;成熟期等氮量和等施肥量下,施SCU处理的水稻籽粒产量比普通尿素处理分别高出35.7%,19.3%,等氮量SCU处理水稻的千粒重较大而有效穗数较小;(2)SCU处理较普通尿素处理较大幅度地提高了水稻的氮肥利用率和水稻氮肥偏生产力,相同肥料施用量下,SCU氮肥利用率为47.35%～57.48 ...
张永春 +6 more
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Nitrogen Sources, Transports and Transformations in Headwater Catchment [PDF]
, 2007 过量施肥、化石燃料的燃烧等人类活动带来的氮负荷问题对陆地和水生生态系统的影响迅速扩大，引起了全世界的关注。当流域陆地生态体系的氮素饱和后，过量的氮素会通过地表径流和地下潜流排入溪流、湖泊、河流和海洋中。因为溪流直接迁移了流域体系过多的氮素，研究氮在溪流中的循环过程之前了解流域氮素流失到溪流的过程机制至关重要。因此，对五川流域氮素流失的过程机理进行研究以及探讨氮在溪流中的迁移转化行为，有利于阐明流域体系的氮在溪流中的循环过程。 本研究融合多学科知识，在GIS技术支持下，综合运用现场定位试验、模型模拟 ...
王吉苹
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Plant nutrient‐acquisition strategies contribute to species replacement during primary succession
Journal of Ecology, Volume 113, Issue 4, Page 988-1003, April 2025.Pioneer species Hippophae acquires phosphorus and nitrogen mainly by ‘mining’ and N2‐fixing strategies and thus dominates in the beginning of primary succession. As soil nutrient availability increases with the mobilization of apatite‐P and input of N‐rich plant residues, Hippophae' strategies become less efficient than Populus's scavenging strategies.
Xiao‐Long Li +12 more
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Shuitu Baochi Xuebao, 2021 为探明地下水埋深与减施氮肥对夏玉米氮素吸收利用及产量的影响，基于大型地中渗透仪，研究了地下水埋深和施氮量对夏玉米氮素利用效率、植株氮素积累量、产量及其形成要素的影响，其中地下水埋深设2 m（G1），3 m（G2）和4 m（G3）3个水平，施氮量设减氮20%处理（240 kg/hm2，N1）、常规施氮处理（300 kg/hm2，N2）2个水平，不控水不施氮处理（G0N0）作为对照，共计7个处理。结果表明：（1）减氮20%条件下，夏玉米产量随地下水埋深增加呈减小趋势，氮素收获指数在埋深2 m下显著高于埋深3，
佘映军 +8 more
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Island restoration to rebuild seabird populations and amplify coral reef functioning
Conservation Biology, Volume 39, Issue 1, February 2025.Abstract Mobile organisms like seabirds can provide important nutrient flows between ecosystems, but this connectivity has been interrupted by the degradation of island ecosystems. Island restoration (via invasive species eradications and the restoration of native vegetation) can reestablish seabird populations and their nutrient transfers between ...
Ruth E. Dunn +5 more
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Shuitu Baochi Xuebao, 2006 采用盆栽试验．模拟田间生态环境．研究施用不同种缓／控释氮素肥料玉米苗期土壤尿素态氮、硝态氮、铵态氮和速效态氮含量，分析比较其在玉米苗期氮素养分释放特点。研究表明，在玉米苗期，施用醋酸酯淀粉包膜脲酶抑制剂nBPT涂层尿素肥料。土壤中尿素态氮和铵态氮的积累量最多．分别为21．72mg／kg和48．31mg／kg；醋酸酯淀粉包膜尿素肥料，硝态氮和速效氮含量最多．分别为102．90mg／kg和135．25mg／kg；丙烯酸树脂包膜脲酶抑制剂nBPT涂层尿素肥料，尿素自膜内迁移到土壤中的量较少 ...
李东坡 +5 more
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Shuitu Baochi Xuebao, 2011 采用田间试验结合15 N同位素示踪,研究有机无机肥配施对浙江省杭嘉湖平原稻田氮素利用率及环境效应的影响,结果表明:在施氮量150kg/hm2基础上,加施有机肥3 000kg/hm2,稻谷增产9.8%～17.7%,氮素利用率达到47.9%,比单施化肥提高4.8%。而在施氮量210kg/hm2的基础上增施有机肥,稻谷产量及氮素利用率均呈下降趋势。硝态氮是稻田土壤氮素损失的主要形式,施用有机肥能有效地降低氮素损失率。在施氮量150kg/hm2基础上配施有机肥,氮素通过田间径流的流失率由0.85%降至0.70%,
叶静 +8 more
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The microbial characteristics of nitrite transformation and diversity changes of microbial community in Litopenaeus vannamei aquaculture [PDF]
, 2017 水产养殖环境是一个具有丰富氮（N）源的N循环系统，而亚硝酸盐（NO2-）是一种存在于养殖水体的毒性物质，过量的NO2-会毒害养殖动物，甚至危害人体健康。养殖水体中亚硝酸盐是如何积累以及如何快速去除，一直是人们关注的热点，也是健康养殖的重点。因此，为了解不同养殖时期水体中参与亚硝酸盐积累与转化的微生物过程，以及细菌菌群动态变化规律及其与水质参数的相互关系。本研究以凡纳滨对虾养殖水体为研究对象，通过功能基因克隆文库和qPCR技术分析养殖水体中参与亚硝酸盐转化的功能基因多样性和丰度 ...
胡东
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Pharmacology of drugs used in autoimmune dermatopathies in cats and dogs: A narrative review
Veterinary Dermatology, Volume 35, Issue 4, Page 453-476, August 2024.Immunosuppressive drugs are the mainstay of treatment for many feline and canine autoimmune skin diseases, either as monotherapy or in combination with other drugs. Treatment with these drugs is often lifelong and may have long‐term consequences on the affected animal's overall quality of life.
Heng L. Tham, Jennifer L. Davis
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