Results 31 to 40 of about 183 (169)
Construction of Ecological Security Pattern in Ecological Barrier Zone of Loess Plateau Based on “Importance-Sensitivity-Landscape Features” [PDF]
, 2022 [Objective] The relationship between ecological spatial network structure and soil conservation was analyzed in order to provide countermeasures and suggestions for improving ecosystem services in the Loess Plateau barrier region.
Liu Hongjun +5 more
core +1 more source
MXene‐Based Electromagnetic Attenuation Materials in Microwave and Terahertz Bands
Rare Metals, EarlyView.ABSTRACT MXenes exhibit considerable potential for developing high‐performance electromagnetic (EM) shielding and absorption materials operating across microwave and terahertz frequencies, due to their tunable surface chemistry and exceptional charge carrier transport properties.
Guozheng Zhang +9 more
wiley +1 more source
Shuitu Baochi Xuebao, 2023 水源涵养是生态系统最重要的服务功能之一,黄河流域生态保护和高质量发展规划纲要强调聚焦重点区域,恢复重要生态系统,对强化水源涵养能力提出了新的要求。收集并分析伊洛河流域1975-2019年的气象及下垫面资料,采用InVEST模型产水模块计算1975-2019年伊洛河流域每5年1期共9个时段的产水量,采用流速系数、土壤饱和导水率等对产水量进行修正,估算流域的水源涵养量,具体分析伊洛河流域降水、产水与水源涵养的特征及其相关关系。结果表明:1975-2019年,伊洛河流域多年平均水源涵养量为11.3 mm ...
贾雨凡, 王国庆
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Coastal reclamation impacts on carbon storage in China’s coastal wetland [PDF]
, 2017 滨海湿地具有较高的初级生产力和较缓慢的有机质降解速率，是缓解全球变暖的有效碳汇，得到全球学术界的广泛关注。近年来由于人口增长和沿海城市的快速发展，海岸带地区围填海活动呈加剧趋势，导致滨海湿地的急剧退化。开展围填海活动对滨海湿地碳储量造成影响的研究，对我国海岸带围填海活动的优化管理、制定滨海湿地保护行动计划以及减缓气候变化的战略决策具有非常重要的学术价值和现实意义。 本论文以全国围填海区内的滨海湿地作为研究对象，基于全国围填海土地利用分类数据、滨海湿地和沿海自然保护区空间分布数据以及文献检索碳密度数据 ...
邱建慧
core
Landscape Ecological Risk Assessment of Ya’an-Kangding Expressway Based on PLUS Model [PDF]
, 2023 [Objective] The regional landscape ecological risks were evaluated, and their spatiotemporal variation was analyzed in order to provide important support for reducing regional ecological risks, maintaining regional ecological security, and promoting ...
Li Xu, Liu Jingjing, Peng Peihao
core +1 more source
Rare Metals, EarlyView.ABSTRACT This study introduces novel nonequiatomic TiZrCoCrMoCux (x = 0, 5, 10; at%) medium‐entropy alloys (MEAx) tailored for orthopedic implants, synergistically combining the biocompatibility of Ti‐based alloys, the wear resistance of CoCrMo alloys, and the antibacterial/osteogenic attributes of Cu. The alloy's microstructure, mechanical properties,
Hang Yu +9 more
wiley +1 more source
Measuring and Mapping the Impact of Land Use and Land Cover Change on the Hydropower Production——A Case Study of Jiulong River in Fujian Province [PDF]
, 2017 水电是全球利用最广泛的可更新能源,其生产能力对土地利用/覆被的变化非常敏感。研究土地利用/覆被变化与流域水电生产的数量、价值及其空间分布的关系是流域水资源规划和管理的基础。本论文应用InVEST模型评估九龙江流域土地利用/覆被变化对水电生产数量及其价值的影响。结果表明：2000~2010年间,九龙江流域内,土地利用/覆被主要由蒸散量较大的耕地和林地转化为蒸散量较小的建设用地,产水量增加了0.66%。但由于耕地和建设用地的耗水量较其他土地利用/覆被类型大,水电生产的供水量却降低了8.46 ...
彭本荣, 黄珠美
core
Research on Land Use Simulation and Optimization Regulation in Nanchang City Based on Low-carbon Orientation [PDF]
, 2023 [Objective] The changes in land use under different low-carbon scenarios were simulated, and the differences in carbon storage and carbon emissions under multiple scenarios were compared in order to provide relevant suggestions for the low-carbon ...
Chen Jiacheng, Luo Yuan, Luo Zhijun
core +1 more source
Laser‐Driven Halide Exchange and High‐Resolution Multicolor Patterning of Perovskite Films
Rare Metals, EarlyView.ABSTRACT Translating the excellent properties of metal halide perovskites (MHPs) into practical flexible optoelectronic devices requires high‐resolution multicolor patterning techniques that are compatible with post‐fabrication processing. However, such a capability has remained elusive.
Shu Yang +6 more
wiley +1 more source
Shuitu Baochi Xuebao, 2023 针对喀斯特地区景观格局驱动水源涵养功能演变机制的相关研究较少,而水源涵养功能是岩溶石漠化治理等生态修复工程生态效益的关键指标之一,具有重要的研究意义。以地处西南喀斯特中心的野纪河流域为研究对象,基于InVEST模型、偏最小二乘模型(PLSR)、景观生态学理论等,探究野纪河流域2005—2020年水源涵养功能的时空分异特征及其与景观格局的耦合关系。结果表明:(1)野纪河流域景观类型以旱地、草地和灌木林等为主,各类型之间相互转化较为频繁,总体特征表现为旱地、灌木林和草地之间的转化以及建设用地对其余地类的挤占。
王耀鑫 +4 more
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