Results 21 to 30 of about 916 (105)
Shuitu Baochi Xuebao, 2018 为了更好地理解土壤碳氮元素对氮添加的响应，通过短期原位模拟氮沉降试验，揭示黄土高原子午岭人工油松（Pinus tabulaeformis Carrière）林土壤碳氮对外源氮添加的响应过程和机制。从2015—2016年设置4个氮添加水平，分别为对照（0 kg/（hm2·a），N0）、低氮（50 kg/（hm2·a），N50）、中氮（100 kg/（hm2·a），N100）和高氮（200 kg/（hm2·a），N200），研究人工油松林地不同深度土层土壤有机碳和全氮以及土壤碳氮储量对模拟氮添加的响应 ...
陈磊 +4 more
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Lithology modulates soil priming effect via resource limitations and bacterial community structure
Functional Ecology, Volume 40, Issue 1, Page 176-190, January 2026.Read the free Plain Language Summary for this article on the Journal blog. Abstract The soil priming effect (PE), triggered by root exudate inputs that stimulates microbial activity and drives significant soil carbon (C) losses in terrestrial ecosystems.
Xinyu Hou +4 more
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Functional Ecology, Volume 39, Issue 12, Page 3504-3516, December 2025.Read the free Plain Language Summary for this article on the Journal blog. Abstract Nitrogen (N) deposition strongly affects litter decomposition and nutrient release, thereby reshaping carbon cycling in terrestrial ecosystems. Although most studies have focused on above‐ground litter, the effects of N addition on fine root decomposition and their ...
Yuneng Wang +5 more
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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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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
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Gongye shui chuli, 2021 碳源不足已成为人工湿地脱氮受限的重要因素。植物材料因富含丰富的纤维素，且成本低廉、可再生，在自然环境中可广泛获取，具有作为外加碳源应用于人工湿地脱氮过程中的潜力。为研究添加植物碳源对人工湿地脱氮过程的影响，选取3种常见植物材料作为潜在碳源，探究其释放特性，并作为外加碳源，研究在不同条件下对人工湿地脱氮效果和N2O的释放量的影响。研究结果表明：植物材料可以很好地释放有机碳，其累积释碳量为119.78~172.84 mg/g，添加植物碳源进行人工湿地试验，HRT为3 d、碳氮比为6、温度为30 ℃时 ...
许兵, 张旭, 刘佳, 成小翔
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氮添加和凋落物增减对华西雨屏区常绿阔叶林土壤团聚体及其碳氮的影响
Shuitu Baochi Xuebao, 2022 大气氮沉降可通过改变土壤氮素可利用性(直接影响)和改变凋落物输入量(间接影响)对森林土壤碳氮动态产生影响。土壤团聚体是森林表层土壤最具代表性的基本结构单元, 对于稳定贮存有机碳氮具有重要意义。通过氮添加和凋落物增减试验设计, 探索氮添加和凋落物增减对土壤团聚体及其碳氮组分的影响。结果表明: (1)凋落物增加(+L)和减少(-L)都使A层土壤(0-10 cm)以及各粒径团聚体的TOC(有机碳)、TN(全氮)含量显著提高, 使pH显著降低。氮添加使B层土壤(10-30 cm)pH显著降低, 表现为高氮(HN)
吕思扬 +5 more
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New Phytologist, Volume 247, Issue 3, Page 1117-1128, August 2025.Summary Environmental changes and their effects are among the most pressing topics of today's ecological research. Shrublands, although widespread across the globe, remain understudied in this respect. We conducted a global meta‐analysis of 81 shrubland sites subjected to experimental warming, shifts in precipitation (e.g.
Daijun Liu +11 more
wiley +1 more source
Shuitu Baochi Xuebao, 2019 通过模拟试验，考察并探讨不同浓度亚铁添加对水平潜流人工湿地中氮和COD去除能力的影响以及作用机理。结果表明：添加亚铁有利于水平潜流人工湿地各层中总氮、硝态氮和铵态氮的去除效果，而且添加亚铁浓度为50 mg/L的人工湿地系统优于其他各处理组，但是过高的亚铁添加又限制了氮的去除效果，尤其是对下层铵态氮的去除能力有抑制作用，但是均高于对照组，而且亚铁添加影响了湿地系统这3种无机形态的氮分层效应。亚铁的添加促进试验初期人工湿地对COD的去除能力，在一定程度上影响了各层COD的去除效果。亚铁离子进入人工湿地后 ...
张燕 +7 more
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水分调节剂DY-ET100对番茄产量、品质及水氮在土壤中扩散的影响
Shuitu Baochi Xuebao, 2020 为解决水分在土壤中横向扩散范围小和硝态氮淋溶等问题，以水分调节剂DY-ET100为供试材料，以清水、渴以友为对照，研究和对比了水分调节剂DY-ET100的添加对水分在不同土壤中的扩散情况及对硝态氮淋溶和番茄产量及品质的影响。结果表明，在掺沙和未掺沙黏土中添加水分调节剂DY-ET100较清水处理番茄果实中VC含量分别显著提高12.50%和20.51%；添加DY-ET100的处理使距滴头0~30 cm范围内的水分在土壤中分布更加均匀，滴灌时水分扩散半径较清水和渴以友分别增加22.53%和12.33 ...
李风珍 +4 more
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