江苏省海岸带近30年人类干扰指数时空变化特征

为探究县级以上海岸带区域人类干扰指数（human interference index, HII）的时空变化特征及生态意义，本文利用遥感数据和地理信息系统技术，对HII计算方法进行一定的改进，使其更适合大范围研究区的计算，并分析了1990－2020年江苏省海岸带HII的时空变化特征及其关键驱动因素，最后以HII与选取的代表性指标的相关性分析结果探讨了HII的生态意义。研究结果表明:（1）研究区内各县、市HII在空间分布上，由北向南呈先下降、后升高、再下降的趋势，1990年、2000年、2010年和2020年研究区的HII为0.2800、0.3620、0.1804、0.2917；（2）人工建筑的扩张和滩涂围垦是影响HII高值区空间分布的关键驱动因素；（3）相关性分析结果表明，研究区内的斑块经历了集聚到破碎化再到集聚的过程，且HII具有一定的生态意义。本研究结果可为江苏省海岸带地区人类活动的调控和生态系统管理提供更多的空间信息和理论指导，也为计算大尺度空间的HII提供了思路。

Spatiotemporal variation characteristics and ecological effects of human interference index in coastal zone of Jiangsu province in recent 30 years

In order to explore the temporal and spatial variation characteristics and ecological significance of human interference index (HII) in coastal areas above the county level, the HII calculation method is improved by using remote sensing data and GIS technology to make it more suitable for the calculation of large-scale research area. The spatiotemporal variation characteristics and key driving factors of HII in Jiangsu coastal zone from 1990 to 2020 were analyzed. The ecological significance of HII was discussed based on the correlation analysis results between HII and selected representative indicators eventually. The results showed that: (1) The spatial distribution of HII in cities and counties in the study area decrease initially and increase afterwards but decrease ultimately from north to south; The HII of the study area in 1990, 2000, 2010 and 2020 were 0.2800, 0.3620, 0.1804 and 0.2917; (2) The expansion of artificial buildings and tidal flat reclamation were the key driving factors affecting the spatial distribution of high-value HII in the study area; (3) The results of correlation analysis showed that the patches in the study area had experienced the process from agglomeration to fragmentation and then to agglomeration, there were some ecological significance in the method of HII. The results of this study can not only provide more spatial information and theoretical guidance for the regulation of human activities and ecosystem management in the coastal zone of Jiangsu Province, but also offer ideas for calculating the HII of large-scale space.