Recent data indicate a significant increase in black bear sightings and territorial expansion within the United States and Japan, necessitating revised public safety protocols and ecological monitoring.

最新數據顯示，美國與日本境內的黑熊目擊次數及領地擴張顯著增加，因此有必要修訂公共安全協定與生態監測機制。

In the United States, the Ohio Department of Natural Resources (ODNR) has documented a quantitative surge in black bear activity, with 2025 recording a peak of 537 sightings across 69 counties. This trend is characterized by the re-establishment of resident populations, specifically female bears in the northeast region, which exhibit high home range fidelity. The capture and radio-collaring of a 576-pound male in Ashtabula County serves as a primary case study for monitoring behavioral patterns and breeding motivations. The ODNR attributes the current population estimate of 50 to 100 individuals to the expansion of populations from Pennsylvania and West Virginia, following the species' near-extirpation in the 19th century.

在美國，俄亥俄州自然資源部 (ODNR) 記錄到黑熊活動數量激增，2025 年在 69 個郡錄得最高 537 次目擊。此趨勢的特點在於定居族群的重新建立，特別是東北地區的雌熊，展現出高度的家域忠誠度。在 Ashtabula 郡捕捉並為一隻 576 磅的雄熊佩戴無線電項圈，成為監測行為模式與繁殖動機的主要個案研究。ODNR 將目前 50 至 100 隻的族群估計數值，歸因於該物種在 19 世紀近乎滅絕後，由賓州與西維吉尼亞州擴張而來。

Parallel developments in Japan reflect a more acute escalation in human-ursine conflict. The 2026 environment white paper identifies bears as a substantial threat to public safety, citing 50,000 sightings and record-level casualties. Anthropological and ecological analyses suggest that the diminution of traditional foraging habitats—exacerbated by climatic fluctuations affecting nut and berry yields—has compelled bears to encroach upon urban centers. Furthermore, the erosion of rural hunting populations has resulted in a behavioral shift; research on euthanized specimens indicates a reduction in cortisol levels and a diminished fear response toward human habitation. Consequently, institutional responses have diverged between the promotion of hunting and the deployment of technological interventions, including AI-driven encounter prediction models and animatronic deterrents.

日本的平行發展則反映出更劇烈的人熊衝突升級。2026 年環境白皮書將熊類定義為對公共安全的重大威脅，引用了 5 萬次目擊紀錄與創紀錄的傷亡人數。人類學與生態分析指出，傳統覓食棲息地的減少——受影響堅果與莓果產量的氣候波動加劇——迫使熊類侵入城市中心。此外，鄉村狩獵人口的流失導致行為轉變；對安樂死樣本的研究顯示，其皮質醇水平降低，對人類居住地的恐懼反應亦有所減弱。因此，機構應對方案分歧為推廣狩獵與部署技術干預，包括 AI 驅動的遭遇預測模型與機械恐嚇裝置。

Both regions are experiencing an increase in bear-human intersections, driven by habitat loss and population growth, leading to the implementation of diverse mitigation strategies.

兩個地區均經歷著人熊接觸增加的情況，主因於棲息地流失與族群增長，進而導致多樣化緩解策略的實施。