东北地区生态系统服务价值特征及其驱动因子研究

Research on the characteristics and driving factors of ecosystem service value in Northeast China

探究东北地区生态系统服务价值(ESV)变化及其驱动力对于区域经济与生态环境健康发展具有重要的意义。基于东北地区2000—2018年5期遥感数据,采用ESV系数法、地理探测器和地理加权回归(GWR)模型,分析东北地区ESV变化及其驱动力,结果表明:1)近18年来,东北地区ESV共损失了982.70亿元,林地ESV是ESV的主体构成,核心功能是水文调节和气候调节;2)ESV空间上呈现中间高、两端低的特征,高值区与次高值区分布广泛;3)经济与社会因子交互作用对ESV影响最大;4)各主导驱动因子对ESV影响作用具有明显空间差异,人口密度作用强度由北向南递减,国内生产总值(GDP)作用强度具有明显空间集聚性,年均降水量作用强度整体上由东向西递减。研究结果可以为东北地区科学制定生态环境保护政策提供一些科学参考。

It is of great significance to explore the changes of ecosystem service value(ESV)and its driving force in Northeast China for the healthy development of regional economy and eco-environment.Based on the five-period remote sensing data in Northeast China from 2000 to 2018,the ESV coefficient method,geographic detector and GWR model were used to analyze the changes and driving forces of ESV in Northeast China.The results showed that:1)in the past 18 years,the ESV in Northeast China lost 98.27 billion yuan.Forest land ESV was the main component source of the ESV,and its core functions were hydrological regulation and climate regulation.2)The ESV was spatially high in the middle and low at both ends.High-value areas and sub-high-value areas were widely distributed.3)The interaction of economic and social factors had the greatest impact on the ESV.4)The influence of the leading driving factors on the ESV had obvious spatial differences.The action intensity of population density decreased from north to south,action intensity of the GDP had obvious spatial agglomeration,and action intensity of the average annual precipitation decreased from east to west as a whole.The research results can provide some scientific references for the scientific formulation of eco-environmental protection policies in Northeast China.