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Uncovering Xi Jinping's Policy Agenda: Text As Data Approach
The Developing Economies, Volume 63, Issue 1, Page 9-46, March 2025.How many agendas has Xi Jinping put forth and promoted since taking office in 2012, and what are the types of agendas? How much of political attention has each agenda received, and how has the allocation of attention changed over time? We utilize a dataset of presidential statements, speeches, and reports from 2012 to 2022 and employed automated text ...
Jaehwan Lim, Asei Ito, Hongyong Zhang
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Ecological Applications, Volume 35, Issue 1, January 2025.Abstract Although agriculture and plantation forestry have decreased natural open habitats and old‐growth forests, conservation in managed lands is considered essential for achieving “nature‐positive” goals that reverse biodiversity trends from negative to positive. From subboreal to temperate regions, mature conifer plantations with broadleaved trees (
Kazuhiro Kawamura +2 more
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Guanotrophy: Waterbirds Pay for Using Resources at Their Wintering Habitats 鸟粪营养学 ：水鸟在越冬栖息地使用资源后留下回报
Integrative Conservation, Volume 3, Issue 4, Page 382-397, December 2024.Significant waterbird colonisation was recorded in the wintering period (October through March in 2018–2019 and 2019–2020) in wetlands on Central Asian and East Australasian Flyways. Different limnochemical conditions influenced nitrate and phosphate concentrations.
Arkajyoti Mukherjee +3 more
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野生动物学报, 2018 针对飞鼠冬季选取的栖息地巢穴材料的导热系数开展研究,是实现飞鼠越冬巢穴内部热环境研究的重要理论前提。本文对飞鼠越冬选取巢穴材料的导热系数开展实验研究,将巢穴材料分为树洞材料和巢材两种。研究结果表明飞鼠越冬选取树洞的导热系数在0.145～0.174 W/(m·℃)间。而飞鼠越冬时选取巢穴内巢材的导热系数平均值为0.0446 W/(m·℃)。二者结合可以使冬季巢穴内保温隔热效果显著,在飞鼠越冬中发挥着重要的作用。
王松庆 于艳红 满效强 陈 亮
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Wildlife Letters, Volume 2, Issue 2, Page 73-82, June 2024.Molecular markers are widely used in conservation genetics of wildlife. A total of 15 novel microsatellite loci with high polymorphism of Blue‐crowned laughingthrush were developed in this study. The genetic diversity level of wild individuals was higher than two captive populations including Ocean Park Hong Kong and Nanchang Zoo. The genetic diversity
Xinghe Gao +8 more
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, 1987 丹顶鹤夏季在我国黑龙江、苏联的西伯利亚、朝鲜和日本北海道的沼泽地繁殖。冬季主要迁至江苏省盐城市沿海滩涂的盐土沼泽地带越冬。笔者于1983～1985年在盐城沿海的东台县蹲门、大丰县斗龙港以北至射阳县新洋港及淮北盐场等地,对丹顶鹤越冬习性,数量变动等方面进行了观察,现将结果整理如下。一、栖息环境盐城位于东径 119°27′～120°56′,北纬32°34′～34°28′,地处淮河尾闾,黄海之滨,它横跨暖温带与亚热带,滩涂为江、淮、黄冲积平原,地形宽阔而平坦,滩涂面积362.14万亩（潮上带 ...
施泽荣, 吴凌祥
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野生动物学报, 2016 在山东黄河三角洲自然保护区,大鸨属于冬候鸟,越冬时间为每年11月至次年3月,2015年在保护区内观测记录到32只大鸨,主要栖息在农田,以冬小麦苗、玉米、大豆、稻粒、植物种子为食。目前大鸨越冬地面积萎缩和破坏严重,大鸨栖息地质量正在下降,应通过扩大大鸨栖息地面积,改善栖息地环境质量,在保护区内试行湿地生态补偿措施,开展日常巡护监测及加强宣传教育等措施以改善大鸨越冬环境和越冬数量。
朱书玉 赵亚杰 王安东 张树岩 张希涛 毕正刚 付守强 盖 勇
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野生动物学报, 1998 云南昭通地区是黑颈鹤越冬的王要栖息地之一。1995／96年冬季共发现有1000只左右个体在10个地点越冬栖息．越冬集群有家族、同种和异种三种类型。成功比为8：1。目前辽些分布点的沼泽湿地都已受到不同程度的人为破坏。云南省政府正筹划在该地区建立自然保护区。
孙德辉
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野生动物学报, 1997 盐城生物圈保护区越冬丹顶鹤数量超过１０００只１９ｂｅ年１２月至１９９７年回月，盐城生物圈保护区对越冬丹顶鹤(ＧｒＵｓｊａＰｏｎｅｎｓ训的数量进行了调查。结果表明，保护区内越冬丹顶鹤的总数为１０２０只，比１９９５４Ｉ５ｘａｔｔｗ长２００余只，是保护区建...
马志军
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