Abstract：
As one of the three major urban agglomerations in China, the Beijing-Tianjin-Hebei Region has strong economic strength but its ecological fragility is very prominent. To pursue the comprehensive development of economy and ecology, it is very important to analyze the ecological environment in the Beijing-Tianjin-Hebei Region. Here, the Beijing-Tianjin-Hebei Region was selected as the research area, and 19 indicators were selected to construct an evolution system based on the PSRM model. The temporal and spatial evolution characteristics of ecological vulnerability in the Beijing-Tianjin-Hebei Region were explored by combining the order relation method, CRITIC method, Theil index, and hot spot analysis, and the influencing factors were calculated via geographic detector. The results showed that:① the ecological vulnerability first increased and then decreased in the Beijing-Tianjin-Hebei Region. The vulnerable areas showed a northeast-southwest trend, and the ecological environment in the northeast and southwest regions was better than that in the central and southern regions. The area of slight vulnerability in 2014 increased by 6803.01 km2 compared with that in 2009. The area of mild vulnerability decreased by 130.41 km2, and the area of moderate vulnerability decreased by 26537.31 km2 compared with that in 2009. The areas of severe and extremely vulnerable status increased by 19512.9 km2 and 351.81 km2, respectively, compared with those in 2009. The habitat situation in the Beijing-Tianjin-Hebei Region improved significantly from 2014 to 2019. Compared with that in 2014, the areas of mild, moderate, severe, and extremely vulnerable decreased by 2248.29 km2, 2220.21 km2, 7988.67 km2, and 55.98 km2, respectively. The light area increased by 12513.15 km2 compared with that in 2014. ② According to the calculation results of the Theil index, the spatial correlation degree of ecological vulnerability in the Beijing-Tianjin-Hebei Region exhibited a V-shaped fluctuation, and the spatial pattern of the cold and hot areas was predominantly consistent with that of the vulnerability. ③ Biological abundance, PM10, and the human disturbance index had a significant influence on the spatial differentiation of ecological vulnerability in the Beijing-Tianjin-Hebei Region. Based on the results of ecological vulnerability analysis, some suggestions on the ecological environment and sustainable development in the Beijing-Tianjin-Hebei Region were proposed.
摘要：
作为中国三大城市群之一,京津冀地区经济实力雄厚，但生态脆弱性十分突出。追求经济和生态的全面发展,分析京津冀地区的生态环境具有十分重要的意义。这里,选择京津冀地区作为研究区域，并选取19个指标构建了基于PSRM模型的进化系统。结合序关系法探讨了京津冀地区生态脆弱性的时空演变特征,批评方法,泰尔指数,和热点分析，并通过地理检测器计算影响因素。结果表明:①京津冀地区生态脆弱性呈先上升后下降的趋势。脆弱地区呈现东北-西南趋势,东北和西南地区的生态环境好于中部和南部。2014年轻微脆弱面积比2009年增加6803.01平方公里。轻度脆弱性面积比2009年减少130.41km2,中度脆弱性面积减少26537.31km2。严重和极其脆弱的地区分别增加了19512.9平方公里和351.81平方公里，与2009年相比。2014-2019年京津冀地区生境状况明显改善。与2014年相比，温和地区，中度,严重,和极端脆弱分别减少了2248.29km2，2220.21km2，7988.67km2和55.98km2。光照面积比2014年增加12513.15km2。②根据泰尔指数的计算结果,京津冀地区生态脆弱性空间关联度呈V型波动,冷热地区的空间格局与脆弱性的空间格局主要一致。③生物丰度，PM10、人为干扰指数对京津冀区域生态脆弱性空间分异有显著影响。根据生态脆弱性分析的结果，提出了京津冀地区生态环境和可持续发展的建议。
