Results 31 to 40 of about 2,797 (110)
Shuitu Baochi Xuebao, 2000 探究湟水流域植被NDVI时空变化及其驱动因素将有利于地区生态环境的恢复和区域可持续发展。基于多源遥感数据和社会经济数据,利用趋势分析法和皮尔逊相关分析法探究2000—2020年流域植被NDVI时空变化特征,并借助地理探测器分析自然和人为驱动因素对流域内植被空间分异及变化的影响力。结果表明:(1)2000—2020年流域植被NDVI值整体呈现上升趋势,平均增速为0.003 8/a,其中湟水沿岸及下游部分上升趋势最为明显,同时新兴城镇与"引大济湟"工程区存在明显的下降趋势。(2)整个流域内 ...
吕勇, 修丽娜, 姚晓军
doaj
Journal of Animal Ecology, Volume 95, Issue 7, Page 1178-1193, July 2026.This population‐comparative study reveals that male and female parents respond differently to social and ecological conditions. This sex‐specific responsive strategy is related to the incongruent parental care systems across populations in Chinese penduline tits.
Jia Zheng +5 more
wiley +1 more source
浙江大学学报. 医学版近年来研究发现，由氧化应激等刺激因素导致的铁代谢紊乱与脂质过氧化诱导的铁死亡在主动脉夹层的发生和发展中发挥重要作用。其中，铁代谢紊乱主要体现为铁含量与血红素代谢异常导致的羟基自由基过量生成，而脂质过氧化则与Xc－系统异常及磷脂氢过氧化物过量积累相关。这些因素协同导致主动脉稳态被破坏，驱动主动脉夹层中内皮细胞和血管平滑肌细胞等管壁组成细胞铁死亡。主动脉夹层中存在多个铁死亡相关基因紊乱，且吸烟等流行病学因素、蛋白质甲基化等表观遗传修饰及T淋巴细胞等免疫细胞功能异常亦与主动脉夹层铁死亡密切相关。此外 ...
洪 翔 +3 more
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Conservation Biology, Volume 40, Issue 3, June 2026.Abstract Despite the crucial role of human impacts on biodiversity loss, many assessments of this loss focus on single metrics, such as species richness, and overlook the multidimensional effects of human activities. Because of its importance to ecosystem functioning, we investigated the functional diversity of medium‐ and large‐sized mammal ...
Xueyou Li +8 more
wiley +1 more source
Conservation Biology, Volume 40, Issue 3, June 2026.Abstract Human development is a driver of global change and a major threat to biodiversity. Protected areas maintain and support biodiversity, but outside stressors, such as climate change and land use change, can negatively influence natural resources within protected areas.
Leah J. Rudge +2 more
wiley +1 more source
Shuitu Baochi Xuebao, 2005 利用RS和GIS技术和景观生态学的方法，对泾河中上游流域1986～2000年的景观特征及其动态变化进行了研究。通过计算多样性指数、优势度、破碎化指数、分离度等指标，进行了土地利用格局变化分析，并对该区域土地利用变化的主导因子进行了分析，认为该区土地利用／土地覆被变化的驱动力主要为：自然因素、经济因素、人口压力及宏观政策等，并互相影响、互相制约，共同影响流域景观格局的变化。
张希彪
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Rare Metals, Volume 45, Issue 5, May 2026.ABSTRACT NASICON‐type Na4VMn(PO4)3 (NVMP) is a promising high‐capacity cathode for sodium‐ion batteries, yet its practical deployment is hindered by Mn3+‐driven lattice distortion, persistent oxygen vacancy defects, and sluggish Na+ transport, collectively resulting in accelerated performance degradation.
Deyi Zhang +10 more
wiley +1 more source
Rare Metals, Volume 45, Issue 5, May 2026.ABSTRACT With excellent castability and dimensional stability, Zn alloys are widely used in the automotive and electronic industries. However, the inherent trade‐off between strength and ductility remains a key bottleneck limiting their application in high‐performance fields.
Jianxing Zhou +11 more
wiley +1 more source
Shuitu Baochi Xuebao, 2017 基于洞庭湖1951—2014年实测径流量和输沙量数据，采用Mann-Kendall检验、滑动t检验和有序聚类分析等多种统计方法分析洞庭湖水沙演变特征，并以回归曲线拟合及归一化曲线对降水量、径流量和输沙量之间的相互关系进行分析，以期确定影响洞庭湖水沙变化的驱动因素。结果表明：（1）入出湖径流量、输沙量的突变年份有差异，入湖径流量、出湖径流量为1971年，入湖输沙量为1985年，出湖输沙量为1970年；（2）洞庭湖入湖径流量具有以分段衰减为特征的演变过程，1972—1977年表现最明显；（3 ...
代, 吕殿青, 李景保, 王金凤
doaj
Spatially Downscaling of Future Food Demand for Policy Planning
World Food Policy, Volume 12, Issue 1, May 2026.ABSTRACT Understanding the subnational dynamics of food demand, while accounting for the evolution of the agrifood system at the global level, remains a challenge for designing food policy to ensure food security. To link global agrifood systems with subnational food policy planning, we downscale per capita food demand for 62 food commodities at the ...
Chun Song +3 more
wiley +1 more source