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都市养蜂已由小型试验转为可见且获利的城市产业。以华府某栋商业办公大楼为例,单座蜂箱通常可容纳约5万只成蜂。总部在蒙特娄的 Alvéole 在华盛顿特区维护约60个蜂箱(含Bloom Bees),并在全球73个城市管理约2,000个蜂箱;多家其他品牌也加入此市场。纽约市在2010年前封禁屋顶蜂箱,解禁后注册数量从2010年的68个增加到目前超过400个,显示政策放宽后增长迅速。

在更广泛的美国情境下,2022年美国有380万个蜜蜂蜂群,主要商业作业常于农场间搬运蜂箱,且据估计参与授粉了美国80%当地作物。全美约有11.5万名养蜂者,多为每人少于25个蜂箱的业余者。然而产业仍高度不稳定;商业养蜂人于2025年 reportedly lost约60%的蜂箱。研究者将原因归因于 varroa destructor 蝇螨、气候压力、农药暴露与栖地流失,且联邦蜂类健康研究又面临经费缩减。

文章的核心争议是是否真正有助保育。北美约有4000种原生蜂种,且 American bumblebee 在20年间锐减90%。Bert Harris、Tina Harrison 与后续研究指出,城市研究虽非全然一致,但高蜜蜂密度与野生蜂受抑的关联值得重视:巴伐利亚研究显示城市中高密度蜜蜂会明显降低野生蜂量,2022年对12座瑞士城市的研究发现花粉资源不足,2024年统合分析亦认为限制城市养蜂可减少外来物种竞争。蜜蜂可飞行数英里(约8公里)远,而野生蜂大多约半英里(0.8公里);在缺乏本地植物的区域,原生蜂更易被挤压。若蜂箱设在接近公园、原生植物附近且与其距离在300英呎(约91公尺)内,Kristen Rydberg与Delaney Dameron主张可提升授粉与栖地连结,转向更有利生态的使用。

Urban beekeeping has moved from hobby to visible, profitable urban infrastructure. In a DC summer, a typical rooftop hive can host around 50,000 bees. Montreal-based Alvéole runs about 60 hives in Washington, DC, including Bloomberg News’s Bloom Bees, and manages roughly 2,000 hives across 73 cities, with many other firms entering this market. In New York, where hives were restricted before 2010, registrations increased from 68 in 2010 to more than 400 today, showing rapid expansion after legalization.

In the broader U.S. context, there were 3.8 million honeybee colonies in 2022. Commercial operators move hives between farms and are estimated to pollinate 80% of U.S.-grown crops. The country has about 115,000 beekeepers, most of whom keep fewer than 25 hives. Yet the sector is unstable: commercial beekeepers reportedly lost about 60% of their hives in 2025. Researchers point to varroa destructor mites, climate stress, pesticides, and habitat loss, while federal pollinator-health programs face funding constraints.

The key debate is whether urban beekeeping is true conservation. North America has roughly 4,000 native bee species, and American bumblebee populations reportedly fell 90% over 20 years. Bert Harris, Tina Harrison, and later studies suggest concern: a Bavarian study links high honeybee density with lower wild bee abundance; a 2022 study of 12 Swiss cities found local floral resources insufficient; and a 2024 meta-analysis says reducing urban beekeeping can reduce competition from exotic species. Honeybees can forage several miles (about 8 km), while wild bees typically range about half a mile (0.8 km). Where native plants are limited, natives may be crowded out. Yet if hives are sited near parks and native plants, within 300 feet (91 m), Kristen Rydberg and Delaney Dameron argue they can improve pollination and create stronger urban habitat pathways.

2026-03-27 (Friday) · 87899a61cfc3ac76a47898a8161884c95a902f65