Results 31 to 40 of about 2,233 (164)
Shuitu Baochi Xuebao, 2017 为阐明喀斯特小流域土壤有机碳密度分布特征及有机碳储量空间分布格局，采用野外布点采样、实验室测定和地统计学分析相结合的方法，利用2 755个详细调查的剖面样地和23 536个土壤样品，定量研究了喀斯特小流域土壤有机碳密度、碳储量的空间异质性及分布特征。结果表明：后寨河小流域表层（0—20 cm）土壤有机碳含量和密度的平均值为分别为25.07 g/kg和5.23 kg/m2，剖面土壤（0—100 cm）土壤有机碳含量和有机碳密度分别为20.71 g/kg和10.21 kg/m2 ...
张珍明, 周运超, 黄先飞, 田
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Shuitu Baochi Xuebao, 2020 为探讨喀斯特石漠化过程中地表小生境及成土母质岩性的演变对土壤有机碳的影响，以不同喀斯特地貌类型的角度出发，分别从贵州普定、兴义、关岭、荔波及印江县选取对应的喀斯特高原（KG）、峰丛洼地（KF）、峡谷（KX）、原始森林（KY）及槽谷（KC）作为研究区域，分析了0—40 cm土壤层（0—10，10—20，20—30，30—40 cm）及土壤与基岩交界面土层的有机碳含量，分别计算土壤有机碳密度及储量，并分析其空间分布特征及演变规律。结果表明：不同石漠化等级下土壤有机碳含量、密度及储量分别为113.18~163.
王兴富 +3 more
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大数据, 2023 作为算力承接地，西部地区拥有丰厚的自然资源禀赋，需充分发挥其在能源、气候等方面的优势。“东数西算”背景下，数据中心急需对算力转移过程的碳减排效益进行量化分析。在考虑可再生能源、气候因素和传输过程3个影响因素的情况下，构建了数据中心工作负载转移的碳排放量核算模型，以“东数西算”八大节点为例进行算例分析。结果发现，相较于可再生能源和气候因素所减少的碳排放量，传输过程造成的额外碳排放量微乎其微，在仅考虑前两者的情况下，每转移1 kW·h的工作负载，碳排放量可减少0.053~0.344 kg ...
周瑜, 张炜乐, 段婉婷
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Rare Metals, Volume 45, Issue 3, March 2026.ABSTRACT Biomass‐derived quinones are promising green and sustainable cathode materials for sodium‐ion batteries (SIBs), yet their practical application is hindered by poor cycling stability due to dissolution in conventional electrolytes. Herein, we demonstrate that sodiumation is an effective strategy to enhance both rate capability and cycling ...
Xinyue Zhu +4 more
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Shuitu Baochi Xuebao, 2018 为研究不同干扰程度下滨海湿地有机碳分布特征，选择黄河三角洲干扰程度较小的一千二管理站和黄河口管理站及干扰程度较大的东营港和五号桩4个研究区，对不同植被群落下的土壤有机碳含量、密度及单位面积储量进行研究，结果表明：植被生长初期（5月）一千二管理站、东营港、五号桩和黄河口管理站土壤有机碳含量、有机碳密度以及单位面积有机碳储量分别为3.504，3.433，3.698，3.815 g/kg、4.84，4.58，5.02，5.56 kg/m2和4 237.00，3 807.42，4 272.77，4 917.63
宋红丽 +4 more
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Shuitu Baochi Xuebao, 2022 为研究不同密度马尾松人工林枯落物输入对土壤理化性质和林分生长影响,选择适宜的人工林经营措施提供参考。以2 500,3 300,4 500,6 000株/hm2(分别记为M1、M2、M3和M4)4种造林密度的马尾松人工林为研究对象,利用结构方程探究不同密度马尾松林枯落物输入对土壤性质的影响。结果表明:林分密度对枯落物和土壤理化性质均具有显著影响,其中枯落物总蓄积量和持水量表现为M2密度最大,显著高于其他密度;同时M2密度中枯落物碳、氮、磷、钾养分储量最大,以有机碳为主,占总储量的96.98 ...
李鹏 +6 more
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Rare Metals, Volume 45, Issue 3, March 2026.ABSTRACT Tellurium (Te), emerging as a promising alternative to sulfur (S) and selenium (Se), offers significant advantages for potassium (K) ion storage due to its comparable theoretical volumetric capacity (2619 mAh cm−3) and higher electronic conductivity (∼102 S m−1), which promotes rapid charge transfer and improves reaction kinetics.
Sung Woo Cho +7 more
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Synergistic benefit analysis of carbon sink capacity and biodiversity function of artificial ecosystems in mining reclamation sites [PDF]
Land reclamation in mining areas is an inevitable measure to accelerate the restoration of biodiversity, promote the transformation and development of mining areas, and realize the transformation of carbon sources into carbon sinks. There are few studies
Cong MEN +5 more
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Rare Metals, Volume 45, Issue 3, March 2026.ABSTRACT Emerging as attractive alternatives for sustainable, low‐cost, and high‐performance electromagnetic interference (EMI) shielding, biomass‐derived carbon is nonetheless constrained by a limited repertoire of shielding mechanisms. Herein, a straightforward method was employed to synthesize self‐supporting Co nanoparticles embedded in porous N ...
Yingjie Xu +6 more
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Evaluation of freeze-thaw wind erosion and analysis of influencing factors on the Tibetan Plateau based on the improved RWEQ [PDF]
Freeze-thaw wind erosion refers to the process in which temperature fluctuations cause changes in the surface structure, significantly impacting on the formation of surface landform and soil properties. However, due to the particularity and complexity of
Fujun NIU +4 more
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