An urban ecosystem carries the burden of urbanization and records the changes in the ecological environment . A scientific evaluation of the urban ecosystem can effectively assess and identify any system damage and degradation caused by nature or by human activities. In this paper, we construct an urban ecosystem health assessment system on the basis of a pressure–state–response (PSR)/vigor–organization–resilience (VOR) model along with the socioeconomic and remote sensing data related to Nanjing. Meanwhile, the factors hindering the stainable development of the Nanjing ecosystem are discussed. The results indicated that the health of the urban ecosystem in Nanjing is generally on the rise, improving from poor in 2000 to good in 2017; from the results obtained via the PSR model, the state layer continues to decrease, whereas the pressure and response layers continue to increase; the VOR model demonstrated that the urban ecosystem in Nanjing has been relatively stable over the past 20 years, and the obstacle degree model demonstrated that, over the next 10 years, the obstacle factors will be concentrated in the response layer in the early stage and in the pressure layer in the later period, mainly because of the pressure brought about by population growth.

中文翻译：

---

基于综合评价模型的南京城市生态系统健康评价与障碍因子诊断

城市生态系统承载着城市化的重担，记录着生态环境的变化。对城市生态系统进行科学评估，可以有效地评估和识别任何由自然或人类活动造成的系统破坏和退化。在本文中，我们基于压力-状态-响应（PSR）/活力-组织-恢复力（VOR）模型以及与南京相关的社会经济和遥感数据构建了城市生态系统健康评估系统。同时讨论了阻碍南京生态系统可持续发展的因素。结果表明，南京市城市生态系统健康状况总体呈上升趋势，从2000年的较差到2017年的较好；从通过PSR模型得到的结果来看，状态层不断减少，而压力层和响应层继续增加；VOR 模型表明，南京城市生态系统在过去 20 年中相对稳定，障碍度模型表明，未来 10 年，障碍因子将集中在早期响应层，后期的压力层，主要是因为人口增长带来的压力。