Table of biophysical coefficients in Hebi.

Hebi is located in the northern part of China’s Henan Province and is a typical receiving area for China’s South-to-North Water Diversion Project. The assessment of habitat quality and water yield over a long time series is important for evaluating the stability of ecosystem services in Hebi and other receiving areas and for maintaining ecological security and promoting sustainable development. This paper aims to evaluate and dynamically analyse habitat quality and water yield in Hebi, and analyses the characteristics of changes in spatial and temporal patterns of land cover types, habitat quality and water yield in Hebi over the past 20 years, using 2000, 2005, 2010, 2015 and 2020 as horizontal years. The results indicate that: (1) During the study period, the overall land use type in Hebi City has been constantly changing, with the most significant conversion from arable land to other land types; combined with its landscape pattern index, Hebi City has a general characteristic of significant landscape fragmentation and complexity in land use. (2) Habitat quality in Hebi shows an overall trend towards better development, with water availability decreasing and then increasing; the zoning of ecosystem services in Hebi is divided into three classes: superior, good and general, with the area covered by the superior and general classes expanding year by year. (3) Correlation analysis by SPSS software shows that the correlation between habitat quality and landscape pattern index is greater than the correlation between habitat quality and climate change. Additionally, the correlation between water availability and climate change is greater than the correlation between water availability and landscape pattern index.鹤壁市位于中国河南省北部，是中国南水北调工程（South-to-North Water Diversion Project）典型的受水区。长时序生境质量（habitat quality）与产水量（water yield）评估，对于评估鹤壁及其他受水区的生态系统服务（ecosystem services）稳定性、维护生态安全以及推动可持续发展均具有重要意义。 本研究以2000、2005、2010、2015及2020年为研究时间断面，旨在对鹤壁市的生境质量与产水量开展评估与动态分析，并揭示近20年来鹤壁市土地覆被类型（land cover types）、生境质量及产水量的时空格局变化特征。 研究结果表明： (1) 研究期内鹤壁市土地利用类型整体持续发生转变，其中以耕地向其他用地类型的转化最为显著；结合景观格局指数（landscape pattern index）分析可知，鹤壁市土地利用景观整体呈现出显著破碎化与复杂化的特征。 (2) 鹤壁市生境质量整体呈向好发展趋势，产水量则表现为先降低后升高的变化态势；鹤壁市生态系统服务分区可划分为优、良、一般三个等级，其中优级与一般级覆盖的面积逐年扩张。 (3) 通过SPSS软件开展相关性分析后可知，生境质量与景观格局指数的相关性高于其与气候变化的相关性；同时，产水量与气候变化的相关性高于其与景观格局指数的相关性。