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页岩油气资源评价参数之“总有机碳含量”的优选:以西加盆地泥盆系Duvernay页岩为例
Earth Science-Journal of China University of Geosciences, 2019 总有机碳含量（TOC）是页岩油气'甜点'预测、资源评价的重要评价标准之一.以加西Duvernay页岩为例，采用物质平衡的方法恢复原始TOC，从页岩储层和天然气赋存状态等方面分析现今TOC作为评价标准存在的问题.结果表明，Duvernay页岩原始与现今TOC的比值介于1.69~1.02，且热演化程度越高，原始和现今TOC的差异越大.因此，现今（残余）TOC较低并不意味着原始有机碳含量低.Duvernay页岩现今（残余）TOC与有机孔隙的发育不存在直接成因联系，现今（残余 ...
王鹏威 +13 more
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New Phytologist, Volume 247, Issue 1, Page 144-159, July 2025.Summary Domesticated chickpea cultivars exhibit limited genetic diversity. This study evaluated the effects of chickpea domestication on phosphorus (P)‐use efficiency (PUE) under low‐P conditions, using a diverse Cicer collection, including wild species. Two wild Cicer species – 54 C. reticulatum accessions and 15 C. echinospermum accessions, and seven
Jiayin Pang +8 more
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The impacts of nutrients and organic carbon availability on microbial carbon utilization and its consequences [PDF]
, 2015 海洋作为地球上重要的碳库，在全球气候变化的背景下，受到广泛关注。其中微型生物在海洋碳循环过程中发挥了重要作用。传统研究认为，环境营养盐浓度的提高可以增加初级生产力，固定更多的CO2，因此有利于储碳；而微型生物碳泵的生态学原理指出，过量营养盐会刺激细菌利用环境中的惰性有机碳，不利于储碳。即，固碳不等于储碳。同时，土壤和淡水环境的研究发现，在外源活性有机碳输入的条件下，原位环境的惰性有机碳会被加速利用，导致更多有机碳被消耗，称为“激发效应”(PrimingEffect,PE)。PE在碳循环中具有重要意义 ...
刘纪化
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A Pre-Treatment Method for the Determination of Organic Carbon Isotope Composition in Sedimentary Rocks [PDF]
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
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Veterinary Dermatology, Volume 36, Issue 3, Page 302-313, June 2025.Background – Malassezia pachydermatis (MP) is implicated in severe dermatitis and otitis externa (OE) of companion animals and recently gained attention for its increasing resistance to azole compounds. For this reason, developing novel therapeutic strategies is of great interest. In a previous work, we used reference yeast isolates to evaluate several
Costanza Spadini +11 more
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Functional Ecology, Volume 39, Issue 5, Page 1274-1287, May 2025.Read the free Plain Language Summary for this article on the Journal blog. Abstract Interactions between plants and soil microorganisms in the rhizosphere are vital for maintaining the nutrient cycle and stability of terrestrial ecosystems. Nitrogen, closely related to carbon (C) cycling and ecosystem productivity, undergoes transformation by soil ...
Ru Wang +9 more
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Shuitu Baochi Xuebao, 2005 采用第二次土壤普查资料,研究了安徽省不同土地类型表层土壤的有机碳密度和碳库的特点。结果表明,安徽省平均有机碳密度为(31.64±16.39)tC/hm2,林地土壤表层有机碳密度高于全省表层土壤平均有机碳密度,旱作土壤表层有机碳密度则低于全省平均值。有机碳密度的大小顺序为:林地>水稻土耕层>旱地。安徽省表层土壤有机碳储量分布也表现为:林地>水稻土>旱地。表层土壤有机碳总量达0.28 Pg,其中林地占50%,水稻土占23%,而旱地只占18%。因此,人为利用特点是区域土壤碳库和碳密度的主要影响因素。分析表明 ...
许信旺 潘根兴 侯鹏程
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Geochemistry of surface sediments from the continental shelf of the East China Sea and small rivers of SE China: Constraints on chemical weathering and provenance [PDF]
, 2015 沉积物元素地球化学特征可为沉积环境演化历史提供重要信息，包括沉积物物源、物源成分特征、物源区岩石风化侵蚀程度、成岩作用、沉积物传输、沉积过程及古气候变化等。本研究于东海大陆架，瓯江、闽江和晋江河口共采集79个表层沉积物样品，分析其常微量元素地球化学特征并探讨物源区性质及化学风化特征。UCC和UC-YC标准化蛛网图表明，CaO、Na2O、Ba和Sr呈现出不同程度的亏损，而Rb元素则轻微富集。硅酸盐风化指数(CIA、PIA和CIW)及三角形图(A-CN-K、(A-K)-C-N和A-CNK-FM ...
林宝治
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China's Eco‐Civilisation, Climate Leviathan, and Hobbesian Energy Transition
Antipode, Volume 57, Issue 3, Page 830-861, May 2025.Abstract Scholars have hitherto tended to theorise China's ecological civilisation project either as a form of environmental authoritarianism or as a vision of eco‐socialism. This paper contributes to the conversation by conducting a textual analysis of Chinese scholarly discussions on eco‐civilisation.
David Chen
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Shuitu Baochi Xuebao, 2004 为了解侵蚀型红壤不同植被恢复后,土壤有机碳的演变状况,采集了持续时间为17年和9年的2个定位试验点土壤样品,分析了土壤总有机碳、微生物量碳、水溶性碳和矿化态碳含量.结果表明侵蚀型红壤植被恢复后,土壤总有机碳和各类活性碳含量均明显增加,并随着恢复时间的延长,土壤各类碳含量显著上升.同样是杉木林,恢复17年的土壤(0～20 cm)总有机碳、微生物量碳、水溶性碳和矿化态碳的含量分别是恢复9年土壤的2.18倍、2.95倍、2.25倍和2.01倍.不同处理比较来看,木荷林土壤各类碳含量明显高于杉木林土壤 ...
周国模 姜培坤
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