摘要
揭示生态系统服务的驱动机制及其显著影响因子的空间分异特征,对于实现区域生态系统的可持续管理具有重要意义。本研究以京津冀地区关键生态屏障潮白河流域为典型案例,构建了“格局揭示−驱动力识别−空间响应”的生态系统服务研究框架。基于InVEST模型、地理探测器和多尺度地理加权回归(MGWR)模型等分析方法,揭示了2023年潮白河流域生态系统服务的空间分布特征及其主要影响因子驱动效应的空间异质性。结果表明:①2023年潮白河流域生态系统服务呈现显著的空间差异,水源涵养量为43.29 mm,呈现南北低、中间高的分布格局;粮食产量为1.775×10^(5)t,主要集中在中下游平原地区;生物多样性指数呈现北高南低的分布特征;娱乐休闲服务则与人口密度和景点分布相互关联。②从驱动因子对生态系统服务的影响来看,坡度、人类足迹指数、降水量及植被覆盖度为显著影响因子,其中人类足迹指数对生物多样性影响最大(q=0.417),降水量与年均温对水源涵养服务的解释率分别为25.8%与26.3%,粮食生产以降水量为主要影响因子(q=0.087)。③MGWR模型结果显示,驱动因子具有显著的空间非平稳性,其中坡度对水源涵养服务的影响呈现从南到北的递减趋势(q从0.279降至0.030),降水量的最大MGWR系数达到0.388,植被覆盖度对于生物多样性的维持在流域大部分区域都起到正向的促进作用。人类足迹指数对粮食生产服务的影响则呈现西北−东南向递增趋势。研究显示,坡度、降水量、植被覆盖度和人类足迹指数等因子显著影响了研究区生态系统服务的空间格局,且不同驱动因子的驱动效应具有显著的空间异质性。研究结果有望为潮白河流域人地系统可持续发展提供重要依据。
Revealing the driving mechanisms of ecosystem services and the spatial differentiation of their key influencing factors is essential for the sustainable management of regional ecosystems.Using the Chaobai River Basin,an important ecological barrier in the Beijing-Tianjin-Hebei region,as a case study,this study constructed an ecosystem service research framework of‘Pattern revelationdriving force identification-spatial response’.By using the InVEST model,geographic detectors,and the Multiscale Geographically Weighted Regression(MGWR)model,the study explored the spatial distribution of ecosystem services and the spatial heterogeneity of driving effects of the key influencing factors in the Chaobai River Basin in 2023.The results showed that:(1)Ecosystem services in the Chaobai River Basin exhibited significant spatial differentiation.Water conservation capacity was 43.29 mm,characterized by low values in the north and south and high values in the central region.Grain production was 177,500 t and was mainly concentrated in the central and lower plains.Biodiversity was higher in the north and lower in the south,while recreation and leisure services corresponded closely with population density and distribution of scenic areas.(2)As for the impact of driving factors on ecosystem services,slope,human footprint index,precipitation,and vegetation cover were identified as key influencing factors.Human footprint index had the strongest effect on biodiversity(q=0.417).Precipitation and mean annual temperature explained 25.8%and 26.3%of water conservation,respectively.Food production was mainly influenced by precipitation(q=0.087).(3)MGWR model results showed significant spatial non-stationarity among driving factors.The effect of slope on water conservation showed a decreasing trend from south to north,with q decreasing from 0.279 to 0.030.The maximum MGWR coefficient for precipitation reached 0.388.Vegetation positively contributed to biodiversity across most of the basin.The impact of the human footprint index on food production services increased from northwest to southeast.The study indicated that slope,precipitation,vegetation cover,and human footprint index significantly affect the spatial pattern of ecosystem services in the study area,and that their driving effects exhibit significant spatial heterogeneity.These findings provide a scientific basis for promoting the sustainable development of the human-environment system in the Chaobai River Basin.
作者
张继平
乔青
刘晓娜
朱林红
刘春兰
彭笃明
ZHANG Jiping;QIAO Qing;LIU Xiaona;ZHU Linhong;LIU Chunlan;PENG Duming(Beijing Municipal Research Institute of Eco-Environmental Protection,Beijing 100037,China;Hunan Planning Institute of Land and Resources,Changsha 410007,China)
出处
《环境科学研究》
北大核心
2026年第2期393-404,共12页
Research of Environmental Sciences
基金
国家自然科学基金项目(No.41701209)
北京市生态环境保护科学研究院重点基金项目(No.Y2024-002)。
