Results 1 to 10 of about 5,520 (166)
Shuitu Baochi Xuebao, 2022 为了探明西南地区长期不同施肥处理对稻麦轮作紫色土有机碳组分和碳循环相关水解酶活性的影响,依托重庆北碚29年稻麦轮作紫色土长期定位试验,选取不施肥(CK)、单施氮磷钾肥(NPK)、有机无机配施(NPKM)、秸秆还田配施含氯化肥[(NPK)ClS]和秸秆还田配施无机肥(NPKS)5个处理,测定土壤各组分有机碳含量及与土壤碳循环相关的水解酶活性并分析两者间的相关性。结果表明:长期施肥(NPK、NPKM和NPKS)显著提高土壤总有机碳和不同组分有机碳含量,各施肥处理土壤总有机碳含量较CK提升11.6%~40.2%
徐文静 +7 more
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Shuitu Baochi Xuebao, 2022 淤地坝作为黄土高原重要的碳储库，其深层土壤有机碳稳定性在很大程度上影响坝地土壤储碳能力和碳排放。以黄土丘陵区不同利用年限的坝地为对象，从坝地剖面土壤有机碳含量及其组分入手，研究不同利用年限、不同沉积深度下，土壤有机碳含量及其稳定性的变化特征和影响因素。结果表明：（1）坝地深层土壤有机碳（SOC）含量低于该区坡耕地表层土壤有机碳含量，并未呈现明显的有机碳富集现象。随利用年限增加，坝地SOC含量呈增加趋势。（2）不同利用年限坝地的SOC、易氧化碳（EOC）、微生物量碳（MBC）、水溶性碳（DOC ...
周仕轩 +5 more
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Comprehensive framework for assessing and optimizing existing research networks
Conservation Biology, EarlyView.Abstract Conservation, monitoring, and research networks, or collections of ecological research sites unified under a common mission of data collection or a research mission, are essential infrastructure for understanding large landscapes. However, most networks developed opportunistically over decades rather than through systematic design, creating ...
Alyson East +2 more
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Shuitu Baochi Xuebao, 2021 农田土壤有机碳库是陆地生态系统最重要的土壤碳库之一，明晰农田土壤有机碳的空间分布特征与影响机制，可为农田土壤肥力及固碳能力评价提供采样依据和理论基础。以江汉平原典型农业灌排单元（面积45 hm2）为研究对象，测定了104个样点0—200 cm深度范围内1 560个土壤样品的有机碳含量，并计算碳密度，揭示土壤有机碳密度的空间分布特征，并分析耕作方式和耕作历史对其分布的影响。结果表明：（1）0—200 cm农田土壤剖面内，20，200 cm厚度土层有机碳密度的均值变化范围分别为1.75~3.77，11.67~
周黎 +7 more
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Structured machine learning modeling to support conservation of deep‐sea benthic biodiversity
Conservation Biology, EarlyView.Abstract Biodiversity monitoring programs need to deliver accurate, timely, and actionable predictions. To establish a predictive monitoring program for deep‐sea benthos of the Santos Basin, Brazil, we developed a two‐stage structured model that allowed comparison of biodiversity predictions obtained from environmental simulations (2M‐Sim).
Gustavo Fonseca +23 more
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Shuitu Baochi Xuebao, 2006 土壤有机碳是土壤团聚体形成的重要胶结剂之一，土壤团聚体分布影响有机碳含量及其稳定性。对子午岭植被恢复过程中团聚体有机碳含量变化的研究结果显示：相对于农田，植被恢复可增加土壤各个粒径团聚体有机碳含量．同时增加不同层次土壤团聚体有机碳含量。就粒径而言，虽然各个植被下〈0．25mm土壤团聚体有机碳含量最低，植被类型变化对土壤团聚体有机碳含量影响最大的是〈0．25mm粒径，辽东栎林地〈0．25mm土壤团聚体有机碳含量是农田〈0．25mm团聚体有机碳含量的3倍；其次，植被类型对〉5mm团聚体有机碳含量影响较大 ...
赵世伟 +4 more
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Functional Ecology, Volume 40, Issue 5, Page 1151-1164, May 2026.Read the free Plain Language Summary for this article on the Journal blog. Abstract Plant phenology is crucial for understanding plant growth and climate feedback. It affects canopy structure, surface albedo, and carbon and water fluxes. While the influence of environmental factors on phenology is well‐documented, the role of plant intrinsic factors ...
Yunpeng Luo +8 more
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Rare Metals, Volume 45, Issue 4, April 2026.ABSTRACT The utilization of carbonaceous anodes in electrochemical systems, particularly potassium‐ion batteries (PIBs), remains hindered by sluggish kinetics and modest capacities, which are caused by the intrinsic ion storage mechanisms and constrained interlayer spacings.
HaiSong Chen +7 more
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Rare Metals, Volume 45, Issue 4, April 2026.ABSTRACT Piezocatalytic technology utilizes mechanical strain or stress‐induced piezoelectric phenomena to produce robust internal electric fields, markedly improving the separation efficiency of e−‐h+ pairs. This method has emerged as a focal point in catalysis by removing reliance on conventional light or electrical energy via its mechanical‐to ...
Yue Zhou +5 more
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Shuitu Baochi Xuebao, 2016 利用一个长达30 年且已进行适当变更的长期定位施肥试验，采用物理方法对团聚体有机碳进行分组，并运用δ13C自然丰度方法，研究长期施用高量有机肥、常量有机肥、化肥及当其施肥措施改变（化改常、常改高、高改化、常改化）3年后红壤性水稻土团聚体有机碳组分含量及其分布比例的变化规律，以期为调控稻田土壤肥力及红壤性水稻土有机碳库的管理提供理论依据。结果表明：与施用化肥30年相比，长期施用有机肥显著提高了红壤性水稻土团聚体总有机碳、粗游离态颗粒有机碳(cfPOC)、细游离态颗粒有机碳(ffPOC)、闭蓄态颗粒有机碳 ...
张 艺, 尹力初, 戴 齐
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