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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, 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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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
wiley +1 more source
Shuitu Baochi Xuebao, 2017 为了探究不同经营模式对毛竹林降雨后地表径流及氮磷流失的影响，于2013年1月至2014年10月，通过在浙江安吉县毛竹纯林中种植红豆杉、香榧、红茴香、朱砂根4种经济灌木，建立了不同的毛竹林经营模式；随后测定了毛竹林样地降雨、径流量和径流氮磷浓度等指标。结果表明，15次地表径流事件中，各样地累计径流量为3.06～9.22 m3，总氮流失量为总磷的7.6倍，其中铵态氮流失量为硝态氮的2.5倍，但通过林分改造能显著降低铵态氮与硝态氮比例。与毛竹纯林对比，4种林分改造模式两年累计径流对比毛竹纯林减少40.0 ...
蔡泽宇 +5 more
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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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Multiple global change factors alter the scaling of nitrogen to phosphorus in alpine plants
Functional Ecology, Volume 39, Issue 8, Page 2044-2055, August 2025.Read the free Plain Language Summary for this article on the Journal blog. Abstract The stoichiometry and allometry of nitrogen (N) and phosphorus (P) reflect nutrient absorption and dynamic allocation by plants, and can be regulated by global change factors (e.g. nitrogen enrichment, climate warming and altered precipitation). Yet, how multiple global
Jiapu Li +10 more
wiley +1 more source
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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Environmental racism and air pollution: Pre and post the COVID‐19 economic shutdown
Review of Policy Research, Volume 42, Issue 4, Page 949-981, July 2025.Abstract Decades of research demonstrates that minoritized groups are disproportionately affected by swathes of harmful pollutants, including air pollution, even controlling for low income. Would significantly reducing individual car traffic help reduce the EJ gap?
Heather E. Campbell +3 more
wiley +1 more source
Shuitu Baochi Xuebao, 2016 为促进新型肥料的应用，减少环境污染，提高玉米、小麦产量，通过同位素示踪技术研究新型腐植酸氮肥对玉米和小麦产量、氮肥吸收利用、氮肥在土壤中分布、氮肥损失以及土壤氮素盈亏的影响。结果表明：脲基活化腐植酸氮肥和常规掺混腐殖酸氮肥可显著增加玉米和小麦产量，提高氮肥利用率，增加氮肥残留量，减少氮肥损失，增加土壤氮素盈余，增加土壤氮素矿化，增加作物对土壤氮素的吸收，其中脲基活化腐植酸作用效果更加明显。脲基活化腐植酸氮肥和常规掺混腐殖酸氮肥与普通尿素相比，玉米产量分别增加20.6%和9.8%，小麦产量分别增加50.5%
庄振东 +4 more
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Shuitu Baochi Xuebao, 2004 利用D饱和最优设计研究了施肥对黑土玉米农田生态系统硝态氮淋洗的影响,结果表明,黑土玉米农田生态系统氮磷肥配合施用,土壤淋洗液的硝态氮含量及硝态氮淋洗总量主要决定于氮素的施用量。施用氮肥减少了淋洗液的数量,但增加了淋洗液硝态氮的浓度和硝态氮淋洗总量。氮肥增加淋洗液硝态氮总量的原因是增加了淋洗液硝态氮的含量。施用磷肥增加了淋洗液的数量,但减少了淋洗液硝态氮的含量和硝态氮淋洗总量,磷肥降低硝态氮淋洗总量的主要原因是降低了淋洗液硝态氮的浓度。氮磷配合施用减少淋洗液的硝态氮含量和硝态氮淋洗总量 ...
王继红 刘景双 于君宝 王金达
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