博尼亚德海滩上的漂流木, 亨廷岛, 南卡罗来纳州, 美国 Driftwood on Boneyard Beach, Hunting Island, South Carolina, USA (© Frances/Adobe Stock)

逐渐失去立足之地的树木 The trees that lost ground

博尼亚德海滩上的漂流木, 亨廷岛, 南卡罗来纳州

在美国南卡罗来纳州亨廷岛州立公园内的博尼亚德海滩，最先映入眼帘的是那些树木。紧接着，一个疑问便会浮现：为何一根根被海水漂白的树干和裸露的树根散落在沙滩上，仿佛一幕正在坍塌的景象被按下了暂停键？自20世纪80年代以来，亨廷岛一直面临严重的海滩侵蚀问题，其侵蚀速率位居美国东海岸前列。在部分区域，海岸线每年后退幅度最高可达约30英尺（约9米）。

在岛屿南端的博尼亚德海滩上，这一自然演变过程清晰可见：饱经风霜的浮木，以及活橡树和棕榈树的残骸，沿岸错落分布。这些树木曾是滨海森林的一部分，但随着海岸侵蚀和风暴导致海岸线变迁，它们的生存空间逐渐丧失。如今留下的景象，既像是一堂生动的地质课，又宛如一座露天画廊。这里记录了超过200种鸟类；近海常有宽吻海豚出没，附近的沙滩上也有红海龟筑巢产卵。每逢退潮，最宽阔的滩涂便显露出来，供人探索；每一次造访，这里的景致都各不相同，独具风貌。

Driftwood on Boneyard Beach, Hunting Island, South Carolina

At Boneyard Beach within Hunting Island State Park, South Carolina, the first thing you notice is the trees. Then comes the question: why are bleached trunks and exposed roots scattered across the sand like a scene paused midway through collapse? Since the 1980s, Hunting Island has experienced major beach erosion, with some of the highest rates along the US East Coast—reaching up to 30 feet per year in certain areas.

On the island's southern end, Boneyard Beach shows this process clearly: weathered driftwood and the remains of live oaks and palmettos line the shore. Once part of a maritime forest, these trees gradually lost ground as coastal erosion and storms shifted the shoreline. What remains is part geology lesson, part outdoor gallery. More than 200 bird species have been recorded here; bottlenose dolphins are often seen offshore, and loggerhead sea turtles nest on nearby beaches. At low tide, the widest stretch opens to explore, and no two visits look exactly the same.