已入深夜,您辛苦了!由于当前在线用户较少,发布求助请尽量完整的填写文献信息,科研通机器人24小时在线,伴您度过漫漫科研夜!祝你早点完成任务,早点休息,好梦!

Prospects of eVTOL and Modular Flying Cars in China Urban Settings

城市化 中国 地理 人口 东亚 人口增长 经济增长 社会经济学 发展经济学 人口学 经济 社会学 考古
作者
Chunlei Zheng,Yiping Yan,Yang Liu
出处
期刊:Journal of intelligent and connected vehicles [Emerald (MCB UP)]
卷期号:6 (4): 187-189 被引量:12
标识
DOI:10.26599/jicv.2023.9210029
摘要

Throughout much of human history, the vast majority of people lived in small communities. However, in the last few centuries, and particularly in recent decades, there has been a dramatic shift. A massive migration has moved populations from rural to urban areas. United Nations reports state that over 4.3 billion individuals now inhabit urban regions, which accounts for more than half (55% as of 2017) of the global population. In most high-income nations, including Western Europe, the Americas, Australia, Japan, and the Middle East, over 80% of people live in urban areas. This figure ranges from 50% to 80% in upper-middle-income countries like Eastern Europe, East Asia, North Africa, South Africa, and South America (United Nations, Department of Economic and Social Affairs, Population Division, 2019). The urban population is anticipated to rise across all countries in the coming decades, albeit at different rates. By 2050, the global population is expected to reach approximately 9.8 billion, with about 6.7 billion residing in cities and 3.1 billion in rural areas. Despite this rapid urbanization, only around 1% of the Earth's land is allocated for urban and infrastructure development. While urbanization has spurred socio-economic growth, it has also led to significant challenges such as traffic congestion and air pollution. In China, the swift growth of cities has notably expanded urban areas and extended the commuting times of residents. The "2022 Commuting Monitoring Report of Major Chinese Cities" reveals that in 2022, over 14 million people in 44 major Chinese cities experienced extreme commuting, with upwards of 13% spending over an hour in transit (Baidu Maps, 2023). Beijing recorded the highest rate, where 26% of commuters faced this issue.
最长约 10秒,即可获得该文献文件

科研通智能强力驱动
Strongly Powered by AbleSci AI
更新
大幅提高文件上传限制,最高150M (2024-4-1)

科研通是完全免费的文献互助平台,具备全网最快的应助速度,最高的求助完成率。 对每一个文献求助,科研通都将尽心尽力,给求助人一个满意的交代。
实时播报
4秒前
打工不可能完成签到,获得积分10
4秒前
陈尹蓝完成签到 ,获得积分10
8秒前
111发布了新的文献求助10
8秒前
专注半烟完成签到 ,获得积分10
14秒前
领导范儿应助Ray采纳,获得10
15秒前
张怡博发布了新的文献求助10
15秒前
vincent完成签到 ,获得积分10
16秒前
18秒前
19秒前
20秒前
pp发布了新的文献求助10
22秒前
EvilS完成签到,获得积分10
24秒前
在水一方应助111采纳,获得10
24秒前
yuhui完成签到,获得积分10
26秒前
31秒前
37秒前
asdfqaz完成签到,获得积分10
38秒前
39秒前
起司嗯应助pp采纳,获得20
39秒前
哭泣的丝完成签到 ,获得积分10
42秒前
小巧雅柏发布了新的文献求助10
44秒前
one-piece完成签到,获得积分10
44秒前
pp完成签到,获得积分10
44秒前
46秒前
wenlong完成签到 ,获得积分10
47秒前
Jasper应助昏睡的世倌采纳,获得10
48秒前
恋恋青葡萄完成签到,获得积分10
56秒前
WUWUWU应助虚幻豌豆采纳,获得10
1分钟前
环走鱼尾纹完成签到 ,获得积分10
1分钟前
1分钟前
小蘑菇应助qqq采纳,获得10
1分钟前
容言发布了新的文献求助10
1分钟前
1分钟前
温暖发布了新的文献求助10
1分钟前
光之霓裳完成签到 ,获得积分10
1分钟前
不与仙同完成签到 ,获得积分10
1分钟前
1分钟前
刻苦的尔白完成签到,获得积分10
1分钟前
年轻冰萍发布了新的文献求助10
1分钟前
高分求助中
Licensing Deals in Pharmaceuticals 2019-2024 3000
Cognitive Paradigms in Knowledge Organisation 2000
Effect of reactor temperature on FCC yield 2000
Very-high-order BVD Schemes Using β-variable THINC Method 1020
Near Infrared Spectra of Origin-defined and Real-world Textiles (NIR-SORT): A spectroscopic and materials characterization dataset for known provenance and post-consumer fabrics 610
Promoting women's entrepreneurship in developing countries: the case of the world's largest women-owned community-based enterprise 500
Shining Light on the Dark Side of Personality 400
热门求助领域 (近24小时)
化学 医学 生物 材料科学 工程类 有机化学 生物化学 物理 内科学 纳米技术 计算机科学 化学工程 复合材料 基因 遗传学 催化作用 物理化学 免疫学 量子力学 细胞生物学
热门帖子
关注 科研通微信公众号,转发送积分 3307263
求助须知:如何正确求助?哪些是违规求助? 2940973
关于积分的说明 8499843
捐赠科研通 2615205
什么是DOI,文献DOI怎么找? 1428763
科研通“疑难数据库(出版商)”最低求助积分说明 663525
邀请新用户注册赠送积分活动 648382