检索结果-南通市图书馆

Mineral-mediated stability of organic carbon in soil and relevant interaction mechanisms

Eco-Environment & Health 2024年第1期3卷 59-76页

作者： Zibo Xu Daniel C.W.Tsang Department of Civil and Environmental Engineering The Hong Kong Polytechnic UniversityHung HomKowloonHong KongChina Department of Civil and Environmental Engineering The Hong Kong University of Science and TechnologyClear Water BayHong KongChina

Soil,the largest terrestrial carbon reservoir,is central to climate change and relevant feedback to environmental *** are the essential components that contribute to over 60%of soil carbon ***,how the interactions between minerals and organic carbon shape the carbon transformation and stability remains poorly ***,we critically review the primary interactions between organic carbon and soil minerals and the relevant mechanisms,including sorption,redox reaction,co-precipitation,dissolution,polymerization,and catalytic *** interactions,highly complex with the combination of multiple processes,greatly affect the stability of organic carbon through the following processes:(1)formation or deconstruction of the mineral–organic carbon association;(2)oxidative transformation of the organic carbon with minerals;(3)catalytic polymerization of organic carbon with minerals;and(4)varying association stability of organic carbon according to the mineral *** pieces of evidence related to the carbon turnover and stability during the interaction with soil minerals in the real eco-environment are then *** also highlight the current research gaps and outline research priorities,which may map future directions for a deeper mechanismsbased understanding of the soil carbon storage capacity considering its interactions with minerals.

关键词： carbon stability Mineral transformation carbon sequestration Bio-geochemistry Soil carbon management Sustainable waste management

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Short-Term and Long-Term Effects of Natural and Artificial carbonaceous Substrates on Greenhouse Gas Fluxes

引用

Journal of Renewable Materials 2022年第7期10卷 1773-1786页

作者： Jürgen Kern Judy Libra Christian Ammon York Neubauer Wenceslau Teixeira Leibniz Institute for Agricultural Engineering and Bioeconomy e.V.(ATB) Potsdam14469Germany TCKON Engineering Services Dr.-Ing.York Neubauer Berlin13088Germany Embrapa Soils Rio de Janeiro24600-000Brazil

The emissions of two greenhouse gases(GHG),carbon dioxide(CO_(2))and nitrous oxide(N2O),from six substrates with different carbonaceous content were compared in short and long-term incubation *** natural soils and three artificial chars were mixed with carbon(C)poor soil(Cambisol)to simulate real conditions after application of char to *** natural soils were a Cambisol,an Anthrosol and a Histosol with C contents of 1.3%,4.4%and 13.2%,*** three chars produced through thermal conversion of wood chips by hydrothermal carbonisation(HTC),fluidized bed gasification and pyrolysis had C contents of 56.9%,75.4%and 79.9%,*** rates of CO_(2)and N2O from the rewetted substrates were measured by gas chromatography over a short time of 72 h and over a long period of nearly two *** short-term CO_(2)emissions from the natural soils showed a clear relationship to their C *** emission rate for the Histosol/Cambisol mixture was three times higher than that for the pure Cambisol,77.1 vs.23.5 mg CO_(2)-C kg^(-1)organic matter(OM)per *** C emission rates for the char/Cambisol mixtures were much lower,ranging between 3.0 and 9.1 mg CO_(2)-C kg OM^(-1)h^(-1),and did not correspond to their total C *** between the two incubation lengths showed that the long-term CO_(2)emission rates were generally one order of magnitude lower than the short-term *** final emission rates for natural substrates over a period of two years were still twice those for artificial char substrates,between 2.2–3.5 mg CO_(2)-C kg OM^(-1)h^(-1)and 1.3–1.8 mg CO_(2)-C kg OM^(-1)h^(-1),*** the contents of total nitrogen(Ntot)and extractable nitrogen(Nmin)were considerable in the chars under study,enhanced N2O release was not observed in the incubation ***,N2O emission rates in the three mixtures of chars and Cambisol were lower by one to two orders of magnitude compared to the pure Cambisol in

关键词： Biochar HTC char incubation experiment GHG carbon stability

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

stability of sedimentary organic matter: Insights from molecular and redox analyses

引用

Environmental Science and Ecotechnology 2024年第6期22卷 266-275页

作者： Qi Li Chao Zhang Baoqing Shan State Key Laboratory of Environmental Aquatic Chemistry Research Center for Eco-Environmental SciencesChinese Academy of SciencesBeijing100085China University of Chinese Academy of Sciences Beijing100049China

Sedimentary organic matter(SOM)affects the stability of the aquatic carbon *** degradation process of SOM is complex for its multifaceted *** concentration and properties of SOM affect its steady state,yet the transformation processes of SOM in lakes remain *** we show the molecular and redox perspectives of SOM stability in polluted sediments with high organic matter content and diverse *** find significant differences in carbon fractions across various *** origin of the organic matter,determined using excitation-emission matrix spectra,influences the consistency of organic matter composition and biochemical degradation in lacustrine *** also observe that sulfur-containing substances decrease carbon chain length and reduce organic matter ***-transform ion cyclotron resonance mass spectrometry shows that sulfur-containing substances decrease the degree of saturation and cause *** contrast,nitrogen-containing compounds increase the modified aromaticity index and humin content,enhancing organic carbon complexity and stability(pstability in the carbon cycle and its future effects.

关键词： carbon stability Redox state FT-ICR MS Sedimentary organic matter Nitrogen-and sulfur-containing compounds

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Responses of soil labile organic carbon and water-stable aggregates to reforestation in southern subtropical China

引用

Journal of Plant Ecology 2021年第2期14卷 191-201页

作者： Yuanqi Chen Yu Zhang Shiqin Yu Feng Li Suping Liu Lixia Zhou Shenglei Fu Hunan Province Key Laboratory of Coal Resources Clean-utilization and Mine Environment Protection Hunan University of Science and TechnologyXiangtan 411201HunanChina Key Laboratory of Vegetation Restoration and Management of Degraded Ecosystems South China Botanical GardenChinese Academy of SciencesGuangzhou 510650GuangdongChina Hunan Province Key Laboratory of Economic Crops Genetic Improvement and Integrated Utilization School of Life ScienceHunan University of Science and TechnologyXiangtan 411201HunanChina Key Laboratory of Geospatial Technology for the Middle&Lower Yellow River Regions Ministry of EducationCollege of Environment and PlanningHenan UniversityKaifeng 475004HenanChina

Aims Reforestation can enhance soil carbon(C)stability and promote soil C *** results are,however,highly variable,and the efficacy of reforestation in enhancing soil C stability is still in ***,it remains unclear how the different soil C pools respond to reforestation in forest *** The response of different soil C fractions to reforestation was examined in five subtropical forests,including the plantations of Eucalyptus urophylla(EU),Acacia crassicarpa(AC),Castanopsis hystrix(CH)and 10 species mixed(MX),and a naturally recovered shrubland(NS).Soil labile C fractions(readily oxidized organic C by KMnO4:ROC;dissolved organic C:DOC),distribution of aggregate-size classes and aggregate-associated C from different soil layers(0–10,10–20,20–40 and 40–60 cm)were *** Findings We found that reforestation and forest type did not affect ROC concentration,yet the highest DOC concentration was detected in NS at four soil *** C concentration was the highest in all aggregate-size classes of CH at 0–10 cm *** addition,forest type did not alter the proportion of soil water-stable aggregates at four soil ***,soil depths significantly affected the distribution of soil aggregates with>0.25 mm aggregates dominating in the topsoils(0–20 cm),but 0.053–2 mm aggregates being dominant in the deep soils(20–60 cm).These results indicate that reforestation and forest type affected soil DOC(0–60 cm)and aggregate C(0–10 cm).Furthermore,soil DOC and aggregate C were more susceptive to reforestation than *** findings suggest that plantations reduce soil DOC concentration,highlighting that C leaching loss may decrease compared with natural ***,*** plantation may enhance soil C stability by physical protection in *** study provides valuable information on tree species selection for reforestation concerning soil C sequestration in southern subtropical China.

关键词： reforestation carbon stability forest type soil aggregate carbon fraction

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：