Results 31 to 40 of about 1,328,681 (221)
本文通过对比半月湾海滩历史岸线、剖面、水下地形、沿岸输沙等的变化,详细分析了海滩的侵蚀现状,探讨了渔港防波堤建设对半月湾海滩侵蚀的动力机制,并针对性地提出了海滩修复思路。研究结果表明,半月湾海滩自渔港防波堤建设以来产生了自西向东的沿岸净输沙,海滩西侧持续侵蚀,东侧持续淤积;2004~2014年西侧岸线蚀退速率最大约为-8.10 m/a,东侧淤进速率最大约为10.10 m/a;2015~2017年年单宽净侵蚀量最大约为10.99 m3/m,2017~2021年单宽净淤积量最大约为26.05 m3/m;岸线、
姜 敏 +8 more
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Comprehensive framework for assessing and optimizing existing research networks
Abstract Conservation, monitoring, and research networks, or collections of ecological research sites unified under a common mission of data collection or a research mission, are essential infrastructure for understanding large landscapes. However, most networks developed opportunistically over decades rather than through systematic design, creating ...
Alyson East +2 more
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Advancing conservation breeding programs for marine invertebrates
Abstract In the face of ecosystem change and biodiversity loss caused by climate change and other stressors, conservation breeding, or captive breeding, with the aim of reintroduction for wild population recovery, is an emerging tool for preventing species’ extinction and rehabilitating ecosystems.
Elora H. López‐Nandam +3 more
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In order to study the pollution characteristics and source contributions of PM2.5 at Lin'an, located in Hangzhou City, the PM2.5 component online monitoring was conducted from December 23, 2021, to February 28, 2022, and the sources apportionment of PM2 ...
马勤(MA Qin), 许振波(XU Zhenbo)
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Taxonomic and functional diversity of urban bees of the world
Abstract Bees play a pivotal role in terrestrial environments. Urbanization can affect these organisms and the ecosystem services they provide. However, knowledge of the global diversity of urban bees is limited. Thus, we summarized data on urban bee species identities and occurrences; compared distributions of all bees with those found in urban ...
João C. F. Cardoso +10 more
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Emerging applications of large language models in ecology and conservation science
Abstract Large language models (LLMs) mark a major development in artificial intelligence, with potentially transformative implications for ecology and conservation science. Built on advanced deep‐learning architectures, these models can support a wide range of tasks. We reviewed emerging applications of LLMs, drawing on the wider scientific literature
Christos Mammides +5 more
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Insights for conservation from the Ecological Knowledge Games project
Abstract Environmental conservation research requires robust methods for collecting large‐scale behavioral data and engaging diverse stakeholders in decision‐making processes. We (Y.P., A.B.D., and N.B.) created EcoKnowGames (Ecological Knowledge Games), a transdisciplinary project that develops knowledge games for conservation science and data ...
Yuan Pan +4 more
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生态资产是指生态系统的间接生态服务价值。本研究综合运用生态学和经济学方法,基于现有的科学技术水平和统计资料、环境监测数据,按照城市湿地、城市森林、城市草地、城市郊区农作物和城市游憩类生态资产五项构建了城市生态资产评估体系。由于城市游憩类生态资产,是由城市湿地、森林、草地、郊区农作物相互作用带来的,而且它们所产生的游憩类资产没有明确的界线,所以,把城市湿地、森林、草地、郊区农作物所产生的游憩类生态资产合并为城市游憩类生态资产单独计算。 草地、农作物与森林所具有的生态资产价值类型相同,只不过数量上有差异 ...
于谦龙
core
Habitat and spatial trends of U.K. wintering waterbird populations over 50 years
Abstract The United Kingdom is an important wintering ground for millions of waterbirds. Most U.K. wintering waterbird populations increased between 1970 and the mid‐1990s, but declined thereafter. We examined U.K. population indices in 46 wintering waterbird species in two 25‐year periods, 1970–1994 and 1995–2019, to identify which waterbird groups ...
Blaise Martay +8 more
wiley +1 more source
油茶籽淀粉的结构与体外模拟消化特性研Structure and digestion property in vitro of Camellia oleifera starch
为促进油茶籽淀粉资源的开发利用,采用“碱提+酶解”工艺从油茶籽粕中提取油茶籽淀粉,并以市售玉米淀粉和马铃薯淀粉为对照,比较其结构和体外消化特性。结果表明:本工艺所得油茶籽淀粉的提取率为64.25%,纯度为92.66%;与市售玉米淀粉、马铃薯淀粉相比,油茶籽淀粉呈圆球形或椭球形,颗粒更小;油茶籽淀粉为典型的A型淀粉,其长程结构不稳定,相对结晶度更低;油茶籽淀粉的短程有序程度与市售玉米淀粉、马铃薯淀粉相似,但双螺旋度数更低;油茶籽淀粉抗性淀粉含量(16.91%)更高。综上 ...
向敏1,韩小苗1,2,吴苏喜1,2,李万元2,彭邵锋3 XIANG Min1,HAN Xiaomiao1,2,WU Suxi1,2, LI Wanyuan2,PENG Shaofeng3"
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