京冀太行山优先保护区域受胁鸟类多样性与分布特征

通过样线法实地调查和查阅历史文献分析，对京冀太行山优先保护区域的受胁鸟类多样性和分布特征进行了研究．实地调查时间为2019年7月—2020年5月，于春季、夏季、秋季和冬季共进行了4次调查．研究结果显示，京冀太行山区域受胁鸟类共计19种，占全国受胁鸟类物种的11.87%．其中:极度濒危物种1种，占全国的5.26%；濒危物种10种，占全国的20.00%；易危物种8种，占全国的8.60%．京冀太行山优先保护区域是黑鹳（Ciconia nigra）、褐马鸡（Crossoptilon mantchuricum）及多种猛禽等受胁鸟类的重要栖息地，其中:黑鹳和猛禽在该区域分布范围较广，潜在适宜栖息地面积较大；而褐马鸡分布区域相对较小，主要分布在北京西部及河北小五台和驼梁2个国家级自然保护区内．受胁猛禽偏向于在中、高海拔开阔的山地环境活动，主要沿着山脊分布． 

Diversity and distribution characteristics of threatened birds in the Beijing-Hebei Taihang Mountain priority conservation area

The diversity and distribution of threatened birds in the Beijing-Hebei Taihang Mountain priority conservation area were investigated by field transline method and historical data were examined．Four field surveys were conducted in the spring, summer, fall and winter from July 2019 to May 2020．A total of 19 threatened bird species were found, accounting for 11.87% of threatened bird species in China．Among threatened birds in the region, 1 species was critically endangered, accounting for 5.26% of threatened birds in China．Ten were endangered species, accounting for 20.00% of all threatened birds in China．Eight were vulnerable species, accounting for 8.60% of all threatened birds in China．The area is an important habitat for threatened birds such as Black Stork, Brown Eared Pheasant and many raptors．The distribution range of Black Stork and raptors in this area is wide, and the potential suitable habitat area is large．Brown Eared Pheasant is distributed in the west of Beijing and Xiaowutai and Tuoliang National Nature Reserve in Hebei province．Threatened raptors tend to live in the open mountain environment at middle and high altitudes, mainly along the ridge．