Results 21 to 30 of about 2,686 (157)

土地利用与反季节水位波动影响下土壤活性有机碳的组分特征

open access: yesShuitu Baochi Xuebao, 2021
为了研究消落带不同土地利用类型和水淹强度下土壤活性有机碳组分特征及其主要的影响因子,选取不同海拔高程(水淹强度)与不同土地利用类型的消落带土壤为研究对象,定量解析土地利用方式与水淹强度对三峡水库消落带土壤活性有机碳组分的影响,并分析土壤活性有机碳与土壤理化性质之间的关系。结果表明,消落带土壤活性有机碳含量总体上随着水淹强度的增强而减小。土地利用、水淹强度及其交互作用对土壤活性有机碳影响的解释度分别为22.1%,13.7%,9.3%;土壤微生物生物量碳主要受土地利用、土地利用与淹水强度交互作用的影响 ...
李文娟   +4 more
doaj  

Characteristics of Soil Active Carbon Fractions and Carbon Pool Stability in Major Forest Types in Northern Daxing’an Mountains [PDF]

open access: yes
[Objective] Soil organic carbon is an important component of the carbon cycle in forest ecosystems, and active organic carbon can indicate changes in soil carbon pools.
CAI Tijiu, LIU Beibei
core   +1 more source

Ultrafast Catalytic Decomposition Reaction Using a ZIF‐67@Celluolose Nanofiber Composite‐Based Cobalt/ Nitrogen Co‐Doped Nanoporous Carbon for Water Treatment

open access: yesRare Metals, EarlyView.
ABSTRACT Recently, cobalt/nitrogen co‐doped materials have emerged as heterogeneous catalysts to activate peroxymonosulfate (PMS) and have been applied to advanced oxidation processes for environmental remediation. However, their recyclability and reusability remain major barriers to practical application.
Wen‐Kai Zhu   +11 more
wiley   +1 more source

不同有机替代对黄土旱塬土壤碳、氮组分及冬小麦产量的影响

open access: yesShuitu Baochi Xuebao, 2022
探讨黄土旱塬冬小麦区不同有机肥替代化肥氮对小麦产量及土壤碳氮组分的影响,为该区减施化学氮肥、促进小麦提质增效和农业绿色可持续发展提供理论依据。于2019年在山西黄土旱塬冬小麦种植区设置100%化肥N处理(HF)、10%腐殖酸N+90%化肥N (F1)、30%腐殖酸N+70%化肥N (F3)、50%腐殖酸N+50%化肥N (F5)、10%有机肥N+90%化肥N (Y1)、30%有机肥N+70%化肥N (Y3)、50%有机肥N+50%化肥N (Y5)7个试验处理,系统研究了不同比例腐殖酸 ...
姜丽伟   +6 more
doaj  

A Pre-Treatment Method for the Determination of Organic Carbon Isotope Composition in Sedimentary Rocks [PDF]

open access: yes
The organic carbon in sedimentary rocks is mainly in the form of kerogen, and it is necessary to extract kerogen from samples before obtaining the organic carbon isotope value. The extraction process requires a significant quantity of hazardous chemicals
Bin SHEN   +7 more
core   +1 more source

Comprehensive framework for assessing and optimizing existing research networks

open access: yesConservation 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
wiley   +1 more source

Template Engineering of Magnetic Nanoparticles Decorated on Porous Carbon for High‐Performance Multiband Electromagnetic Wave Absorption

open access: yesRare Metals, Volume 45, Issue 1, January 2026.
ABSTRACT Although magnetic carbon materials possess significant potential in the field of electromagnetic wave absorption (EWA) due to the synergistic effect of multiple attenuation mechanisms, the currently reported magnetic carbon EWA materials face some challenges, such as high cost, low yield, and easy agglomeration of the magnetic component ...
Bo Jiang   +9 more
wiley   +1 more source

The promotion mechanism of how biochar affects the reclaimed soil microbial carbon sequestration capacity in coal mining areas [PDF]

open access: yes
Biochar application is a key measure for enhancing soil quality. However, the impact of biochar applications on the reclaimed soil for improvement on soil physicochemical properties, enzyme activity and microbial diversity is still unclear, especially ...
Fu CHEN   +5 more
core   +1 more source

High‐Performance Sodium‐Ion Capacitors With Kinetics‐Matched Characteristics Enabled by N/O/S‐Doped Homologous Carbon Electrodes Derived From a Single Precursor

open access: yesRare Metals, Volume 45, Issue 1, January 2026.
ABSTRACT Sodium‐ion capacitors (SICs) offer high energy and power density with long cycle life, but developing kinetically compatible electrodes remains challenging. This work developed a simple and sustainable strategy to synthesize homologous carbon electrodes from the inner shells of durian husks (ISDH) for high‐performance SICs.
De‐Bing Yan   +7 more
wiley   +1 more source

有机物料对稻田土壤团聚体及有机碳分布的影响

open access: yesShuitu Baochi Xuebao, 2017
通过连续5年定位试验,以紫云英、秸秆和商品有机肥等有机物料还田的稻田土壤为研究对象,研究有机物料还田后不同物理分组下土壤组成特点和有机碳变化特征。结果表明,稻田土壤团聚体主要分布在2~0.25 mm与0.25~0.053 mm粒级,团聚体颗粒有机碳含量随着粒径的减小而减少。有机物料还田可提高0.25~0.053 mm和<0.053 mm粒级团聚体有机碳的含量,紫云英、秸秆、商品有机肥等有机物料可通过提高土壤微团聚体有机碳含量而增加土壤碳库。有机物料施用增加土壤轻组组分颗粒含量,减少重组组分颗粒含量 ...
俞巧钢, 邹, 顾国平
doaj  

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