Results 31 to 40 of about 3,525 (113)
New Phytologist, Volume 249, Issue 2, Page 764-776, January 2026.Summary Fine roots are critical for soil resource uptake, yet how declining plant diversity alters fine root biomass (RB) and traits remains unclear. We tested how plant functional trait dissimilarity in shade tolerance, drought tolerance, growth rate, and nitrogen‐fixation ability drives variation in root attributes.
Sai Peng, Yakun Zhang, Han Y. H. Chen
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Shuitu Baochi Xuebao, 2018 施用新型肥料是减少养分径流损失的重要途径。采用田间试验研究了施用包膜尿素对水稻生长和径流氮磷损失的影响，试验设置CK （习惯施肥）、PU1（减磷41%、减氮20%、施普通尿素）、PU2（PU1基础上减氮13%）、UR1（PU2基础上施包膜尿素）和UR2（UR1基础上减氮13%）5个处理。结果表明：PU1和UR1处理水稻氮磷含量与CK处理相近，PU1成熟期氮、磷总积累量比CK增加11.21，2.69 kg/hm2。PU1和UR1处理成熟期地上部生物量和籽粒产量高于CK处理，籽粒产量分别提高7.68%，5 ...
斯圆丽 +4 more
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Review of Policy Research, Volume 42, Issue 6, Page 1496-1508, November 2025.ABSTRACT This study adopts a policy‐centric perspective to explore the complex relationship between sustainable nitrogen management (SNM) and the health risks associated with unsafe drinking water. The critical policy challenge lies in balancing the essential role of nitrogen fertilizers in achieving high agricultural productivity with their ...
Mingean Park +3 more
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Shuitu Baochi Xuebao, 2022 为指导水稻田合理施肥,防治稻田面源污染,试验开展了不同氮肥减施比例对紫云英—水稻轮作体系下稻田田面水氮磷流失的影响研究。2020年在浙江建德开展田间小区试验,设置冬闲(CK)和冬种紫云英(CT)2个处理,并在冬种紫云英基础上设置4个减氮比例,分别为0(CT0),10%(CT1),20%(CT2),30%(CT3),共5个处理,每个处理重复3次。在水稻移栽施肥后开始稻田田面水样品采集(包括施肥2周内的连续采样以及2周后相隔7,14,28天的间隔采样),测定田面水氮磷浓度;于水稻成熟后采集土壤和植物样品 ...
吕永强 +5 more
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Functional Ecology, Volume 39, Issue 10, Page 2704-2716, October 2025.Read the free Plain Language Summary for this article on the Journal blog. Abstract Moso bamboo (Phyllostachys edulis) invasions into broadleaf forests can cause serious ecological problems, such as reducing biodiversity and disrupting community succession.
Ting Zhou +5 more
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Shuitu Baochi Xuebao, 2005 对科尔沁沙地不同沙漠化阶段土壤有机碳、全氮含量、土壤质地以及碳氮密度进行了测定与分析。结果表明,沙漠化过程中不同阶段的特征体现在土壤碳、氮、颗粒组成的有规律变化,土壤碳、氮含量衰减,质地变粗;从潜在沙漠化阶段到严重沙漠化阶段,100 cm深土壤有机碳和全氮含量分别下降91.6%和85.8%,有机碳密度从4 877.9(C)g/m2下降到481.8(C)g/m2,全氮密度从518.0(N)g/m2下降到89.4(N)g/m2;土壤有机碳、全氮与土壤细颗粒组分(
李玉强 赵哈林 赵学勇 张铜会 移小勇 左小安
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Trait‐Mediated Competition for Light Underpins Plant Diversity Loss Under Eutrophication
Global Change Biology, Volume 31, Issue 9, September 2025.Eutrophication often reduces plant diversity by making the ground layer darker, which reduces understory plants. In a natural alpine grassland, we added LED light beneath the canopy and saw diversity return across different nutrient treatments: with added nitrogen fertilizer, light mainly increased new species; with added phosphorus fertilizer, it ...
Tianyuan Tan +7 more
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Shuitu Baochi Xuebao, 2017 选取昆明市松华坝水源区典型小流域——迤者小流域为试验区，通过布设标准径流小区，在2009—2015年对坡耕地产流产沙及氮、磷流失情况进行长期的野外观测研究，从年际尺度上来探讨等高反坡阶对于坡耕地产流产沙及氮、磷等养分流失的影响。结果表明：等高反坡阶对于径流和泥沙的削减效果均较为明显，年平均减流率为50.64%，年平均减沙率74.99%，减沙率显著大于减流率；等高反坡阶对于径流和泥沙中氮、磷均有较为明显的削减效果，平均每年可以削减68.75%的氮流失和82.16%的磷流失 ...
王帅兵, 王克勤
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Shuitu Baochi Xuebao, 2020 草本缓冲带能够有效拦截坡面径流中泥沙、总氮、总磷等污染物，是农业面源污染防控的主要措施之一。通过人工配水模拟地表径流，研究不同径流量对草本缓冲带截污能力的影响。结果表明：草本缓冲带对污染物都有一定的削减作用，草本缓冲带对泥沙削减效果最好，对总磷削减效果最差，白三叶对污染物的削减能力总体较黑麦草强。径流量对草本缓冲带总氮、总磷削减率影响较大，对泥沙削减率影响较小；当流量从0.08 L/s增加至0.24 L/s 时，草本缓冲带对总氮、总磷削减率减少至9%和6%，而泥沙削减率为34%。随着放水冲刷时间增加 ...
付婧 +5 more
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New Phytologist, Volume 247, Issue 6, Page 2616-2629, September 2025.Summary Seagrasses are important contributors to environmental nutrient cycling in marine ecosystems and can improve water quality by absorbing excess nitrogen (N). However, these ecosystems are vulnerable to human‐mediated pressures, including marine heatwaves (MHWs), particularly those of longer duration. We performed an experiment simulating a 30‐d,
Alissa V. Bass +5 more
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