Results 41 to 50 of about 30,335 (182)
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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Multi‐gradient warming reshapes functional traits and adaptive responses of alpine meadow plants
Read the free Plain Language Summary for this article on the Journal blog. Abstract Plant functional traits in alpine meadows are critical indicators of ecosystem responses to climate warming, yet dynamic changes in trait networks across warming gradients and their consequences for community functions remain poorly understood.
Zhiwei Yan +6 more
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Phenology drives asymmetric responses of ecosystem productivity stability to warming and cooling
Read the free Plain Language Summary for this article on the Journal blog. Abstract Ecosystem productivity stability is a key indicator of ecosystem functioning under climate change, but the role of cooling periods in increasingly variable climates remains poorly resolved.
Yao Wei +11 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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Abstract From desert ski resorts to subtropical Winter Games, there is a global proliferation of ‘mission‐impossible’ mega‐projects. The prevailing frameworks of city branding and urban entrepreneurism fail to explain the political logics behind these seemingly irrational projects.
Yiqiu Liu, Sven Daniel Wolfe
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Abstract This paper explores what is happening, for a trainee, when an ethical boundary violation occurs by the analyst with a fellow peer in training. I am approaching this through the Jungian concept of the alchemical vas as I attempt to make meaning of a catastrophic collapse of the analytic work.
Anne Marie Allen
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The collective application of shorebird tracking data to conservation
Abstract Addressing urgent conservation issues, such as the drastic declines of North American migratory birds, requires creative, evidence‐based, efficient, and collaborative approaches. The abundance of over 50% of monitored North American shorebird populations has declined by over 50% since 1980. To address these declines, we developed a partnership
Autumn‐Lynn Harrison +71 more
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钱塘江源头城市开化县复杂的地貌形态及多样的山地小气候孕育了丰富多样的生物资源.根据生态环境现状,提出了突出生物多样性保护、加强生态林业、生态工业、生态农业、生态城镇、生态旅游业等生态建设的思路.
HUANGJing-ru(黄瑾如)
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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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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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