Results 71 to 80 of about 4,754 (162)
亚热带红壤区自然恢复草地转换为人工林后对土壤团聚体有机碳周转的影响
Shuitu Baochi Xuebao, 2019 选择江西泰和红壤退化区25年的自然恢复草地和2种恢复林地，测定了土壤团聚体有机碳的δ13C，探讨了森林恢复过程有机碳在团聚体中的分配和周转特征。结果表明：3种植被恢复模式土壤大团聚比例最高，微团聚体比例最低，木荷林0-20 cm土层大团聚体比例平均值高于马尾松林和草地；木荷林表层土各粒径团聚体有机碳含量均显著高于草地，表层土粉黏粒（
李燕燕 +5 more
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Shuitu Baochi Xuebao, 2022 为了科学评估中国退耕还林工程的固碳能力，收集整理了退耕还林一期工程（1999—2010年）详细的造林资料，结合中国主要树种的蓄积量（生物量）生长曲线和退耕还林前后土壤有机碳变化特征及各树种碳储量计算的相关参数，估算退耕还林工程1999—2050年的固碳量及其变化。结果表明：截至2010年，退耕还林工程造林总固碳量（土壤和植被）为355.87 Tg；工程实施期间，造林后期固碳量显著大于造林前期，平均每年固碳量为29.66 Tg；工程林固碳增汇潜力不断增加，预计到2050年中国退耕还林工程的固碳增汇潜力为1
吴普侠 +5 more
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Accurate monitoring and accounting of methane emission in underground coal mine [PDF]
Methane, the second most prevalent greenhouse gas globally, is characterized by its high global warming potential and short atmospheric lifetime. It is primarily emitted from sectors such as coal mining, oil and gas production, agriculture, livestock ...
Beijing XIE +7 more
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Application and Prospect of AI Technology in Power System Development [PDF]
[Introduction] In the face of energy scarcity and carbon reduction imperatives, the transition to clean energy centered on electricity is crucial.
Bin SHU +4 more
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Evaluation of environmental and economic benefits of CO_2 utilization technologies and their future development trends [PDF]
In 2022, global CO_2 emissions reached 36.07 Gt, but only 230 Mt of CO_2 were captured and utilized, accounting for just 0.64% of the total emissions.
GUO Zeyu +7 more
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Living interiors in the digital age: the Smart Home [PDF]
, 2017 open1Domotics is a term derived from the contraction of the Latin word domus (home) and the disciplines of informatics, telematics and robotics. With the advent of the mechanization era at the beginning of the XX century “home automation” started to ...
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Research progress and future study of carbon emission reduction for UCG [PDF]
The integration of underground coal gasification (UCG) and carbon emission reduction is expected to become an excellent green energy technology during the transitional stage from the current to the arrival of carbon neutrality, and even play an important
Jun WANG +4 more
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Shuitu Baochi Xuebao, 2011 选取位于5个不同区域(吉林龙井、河南封丘、浙江慈溪、江西进贤和海南海口)的代表性稻田,对其土壤复合体有机碳分配及δ13C特征进行了研究。结果表明,不同区域稻田土壤中各粒级复合体含量(质量百分比)变化主要体现在50μm粒级部分。南方稻田0-20 ...
朱洁 +4 more
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Guangtongxin yanjiu, 1997 光纤在拉丝过程中,用沉积密封碳层的方法保护光纤,可以避免 H2和 H2O 引起的光纤损耗增加和强度衰退。在升温和氢压条件下,把碳密封涂层光纤暴露到 H2气中,光纤的损耗特性与 H2或与 H2和 SiO2中的缺陷反应形成的 OH 基团有关。在100～150℃范围内,用圆柱状的经典扩散理论以及 H2在碳中的溶解度和扩散系数提出了 H2的扩散模型。
竺逸年
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