湿地松和锯棕榈组成的森林吊床, 大沼泽地国家公园, 佛罗里达, 美国 Forest hammock of slash pine and saw palmetto, Everglades National Park, Florida, USA (© Mary Liz Austin/Alamy)

湿地松和锯棕榈组成的森林吊床, 大沼泽地国家公园, 佛罗里达, 美国 Forest hammock of slash pine and saw palmetto, Everglades National Park, Florida, USA (© Mary Liz Austin/Alamy)

向树木致敬 A tribute to trees

大沼泽地松林

植树节旨在颂扬树木的无声力量——它们如何稳定生态系统、庇护野生动物、为城市降温，并塑造我们日常生活所依赖的环境。在美国，植树节定于四月的最后一个星期五，这一天鼓励美国以及许多其他国家（日期因生长季节而异）的社区种植、保护和养护各种类型的森林，从社区绿荫到标志性的荒野。

在佛罗里达州的大沼泽地国家公园（联合国教科文组织世界遗产地），高地松林耸立于沼泽和草原之上，共同构成了世界上最大的湿地系统之一。图中可见，阳光普照的火炬松和锯棕榈营造出开阔的林地，与大沼泽地广袤的湿地和红树林形成鲜明对比。在植树节这一天，这样的景观清晰地提醒着我们，树木对于这片非凡的亚热带生态系统的健康和平衡是多么重要。

Arbor Day

Arbor Day celebrates the quiet power of trees—the way they steady ecosystems, shelter wildlife, cool cities, and shape the environments we rely on every day. Observed in the United States on the last Friday in April, the day encourages communities here—and in many other countries, where dates vary according to growing season—to plant, protect, and care for forests of every kind, from neighborhood canopies to iconic wildlands.

In Florida's Everglades National Park, a UNESCO World Heritage Site, elevated pinelands rise above the marshes and prairies that form one of the world's largest wetland systems. Seen here, sunlit slash pines and saw palmetto create open woodlands that contrast sharply with the Everglades' vast wetlands and mangrove forests. On Arbor Day, landscapes like this offer a clear reminder of how essential trees are to the health and balance of this remarkable subtropical ecosystem.