Results 41 to 50 of about 4,754 (162)

紫色土丘陵区坡面土壤有机碳含量及储量分布特征

open access: yesShuitu Baochi Xuebao, 2017
为探明坡耕地土壤有机碳空间分布特征,对紫色土丘陵区坡耕地不同部位土壤有机碳及活性有机碳顺坡和深度分布进行分析。结果表明,坡耕地上坡土层深度仅为22.3 cm,中坡和下坡土层深度约为上坡的2.01倍和3.30倍;与上坡比较,中坡和下坡土壤容重下降了0.2和0.04,土壤孔隙度增加了19.82%与3.83%。沿坡从上向下土壤有机碳及活性有机碳储量显著增加,下坡土壤有机碳及活性有机碳储量比上坡和中坡分别增加了674.74%,104.09%和958.51%,267.75 ...
樊红柱, 张泽洪, 郭, 蒋
doaj  

Construction of Carbon Asset Management System for Large Energy Enterprises Under the Background of Carbon Peaking and Carbon Neutrality [PDF]

open access: yes
[Introduction] With the proposal of the "carbon peaking and carbon neutrality" and the increasing scale of the carbon market, how to manage carbon assets and realize the preservation and appreciation of carbon assets has become an important issue facing ...
Jia GAO   +4 more
core   +1 more source

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

open access: yesRare Metals, Volume 45, Issue 3, March 2026.
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

Assessment of the Climate Benefits and Economic Feasibility of Carbon Dioxide Utilization Pathways [PDF]

open access: yes
[Introduction] Carbon utilization technologies, which convert CO2 into valuable products such as fuels, chemicals, and building materials, represent an innovative approach to mitigating climate change and promoting resource recycling.
Gao, Z, Liang, X, Liu, M, Xia, C, Yu, X
core   +4 more sources

不同种类有机肥施用对黑土团聚体有机碳及腐殖质组成的影响

open access: yesShuitu Baochi Xuebao, 2018
以吉林省农业科学院黑土有机培肥定位试验基地为平台,研究了不同种类有机肥(堆腐肥、鸡粪、牛粪和猪粪)施用对土壤及不同粒级团聚体中有机碳和腐殖质组成的影响。结果表明:与不施肥(CK)和单施化肥(NPK)相比,有机肥配施化肥显著(P0.25 mm粒级团聚体有机碳含量高于其他有机肥处理,且2~0.25 mm粒级团聚体有机碳含量显著高于鸡粪处理;从不同粒级团聚体中腐殖质组分的分布来看,施用堆腐肥后,2~0.25 mm粒级团聚体中HAC和HUC含量显著高于猪粪处理,而0.25~0.053,
魏宇轩   +5 more
doaj  

Melting Preparation for Tungsten‐Doped Graphene/Copper Composites

open access: yesRare Metals, Volume 45, Issue 3, March 2026.
ABSTRACT Melting production plays a pivotal role in the modern copper industry. However, applying this process to fabricate nanocarbon (e.g., graphene, carbon nanotubes)‐reinforced copper matrix composites has remained a long‐standing challenge for nearly 2 decades.
Yunzhong Wu   +9 more
wiley   +1 more source

CCUS policy research for carbon neutrality [PDF]

open access: yes
The introduction of China′s "Dual Carbon" strategic goals has positioned Carbon Capture, Utilization, and Storage (CCUS) technology as the sole option for realizing the low-carbon utilization of fossil energy and as a crucial means to support the carbon ...
HUANG Yan   +6 more
core   +1 more source

Exceptional Electromagnetic Wave Absorption in High‐Entropy Carbides Enabled by Lattice Distortion Engineering

open access: yesRare Metals, Volume 45, Issue 3, March 2026.
ABSTRACT The growing concern over human health issues, driven by increasingly severe electromagnetic pollution from 5G communication, has made the urgent development of high‐performance electromagnetic wave (EMW) absorbing materials. Although carbide‐based materials are promising because of their conductive and polarization losses, existing single ...
Chenqiang Duan   +9 more
wiley   +1 more source

不同森林植被下土壤有机碳的分解特征及碳库研究

open access: yesShuitu Baochi Xuebao, 2005
分析了不同森林植被和同一植被不同林龄的人工杉木林下土壤有机碳的分解特征及土壤有机碳中的活性碳库、缓效性碳库和惰效性碳库的大小和周转时间。结果表明:不同森林植被下土壤有机碳的分解速率不同,总的趋势都是:培养前期分解速度快,后期分解速度慢,土壤剖面A层>剖面B层。在剖面A层中:不同森林植被下分解速率的大小顺序为常绿阔叶林>人工杉木林,不同林龄的人工杉木林为成熟林>中龄林>幼龄林;在剖面B层中:分解速率差异不大。不同森林植被下不同土壤剖面上的土壤活性碳库、缓效性碳库和惰效性碳库的库容和分解速率不同 ...
邵月红 潘剑君 孙波
doaj   +2 more sources

植被恢复的土壤固碳效应:动态与驱动机制

open access: yesShuitu Baochi Xuebao, 2023
植被恢复是影响土壤有机碳库动态变化的关键过程之一,阐明植被恢复过程中土壤有机碳的固持动态及其驱动机制,是全球变化下碳循环研究的热点和前沿问题。本文综述了近年来国内外关于植被恢复过程中土壤有机碳固定动态及其驱动机制方面的研究,剖析植被恢复中土壤有机碳固持动态及其影响因素,探讨植物碳输入对土壤有机碳动态变化的影响机制,揭示植被恢复中土壤有机碳固定的物理、化学和微生物驱动机制,并对目前研究中存在的问题进行总结,进而提出关于植被恢复的土壤固碳效应研究,亟需在土壤有机碳组分的动态、微生物结构和功能,以及植物—土壤—
邓蕾   +3 more
doaj  

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