长江流域中部地区生态系统服务价值评估与综合驱动力分析

Assessment and Driving Force Analysis of Ecosystem Service Value in the Urban Agglomeration Along the Middle Reaches of the Yangtze River

为了探索人类发展系统和自然生态系统的耦合,分析生态系统服务价值的综合驱动力,基于2010年、2017年两期Landset TM/ETM遥感土地利用解译数据,运用基于植被净初级生产力的系数修正当量因子,计算和比较不同区域的生态系统服务价值,采用空间回归方法从景观类型、宏观经济和社会发展水平方面对其综合驱动力进行了阐释。结果表明:(1)生态系统服务价值整体有所提高,但是湖北省、湖南省和江西省各自变化的幅度有所不同。(2)各类用地中生态系统服务价值最大的是水域和林地,其次为耕地和草地,都呈增加趋势;未利用地生态系统服务价值最小,且呈减少趋势。(3)在县域尺度上,生态系统服务价值呈现显著的空间自相关现象,斑块密度、第三产业增加值占比、城镇居民人均可支配收入显著负向影响区域的生态系统服务价值,其中城镇居民人均可支配收入的负向影响最大。由此可以得出,通过避免高密度、细碎化的开发与建设并保护重要的生态功能区,可以提高生态系统服务价值,促进长江经济带的生态文明建设。

The purpose is to explore the coupling of human development system and natural ecosystem,and to analyze the comprehensive driving force of ecosystem service value.The study makes the assessment and comparison of the ecosystem service values,and explores the influencing factors.Using the two phases of land use data interpreted from Landset TM/ETM high-resolution satellite images in 2010 and 2017,this study applies coefficient correction equivalent factor method based on NPP to calculate the local ecosystem service value.The results show that:(1)the ecosystem service value showed an increasing trend,with Hubei,Hunan and Jiangxi presenting different magnitudes;(2)among all types of land,the ecosystem service values of water and woodland were the greatest,followed by cultivated land and grassland,which have an increasing trend;the ecosystem service value of unused land was the smallest,which had decreased;(3)the ecosystem service value at the county level showed significant spatial autocorrelation;it was affected by patch density,the proportion of the added value of the tertiary industry,and the per capita disposable income of urban residents;the impact of the three on ecosystem services was negative,of which per capita disposable income of urban residents had the greatest negative impact.By avoiding high-density and fragmented development,and protecting important ecological function areas,the value of ecosystem services can be improved,and the construction of ecological civilization in the Yangtze River Economic Zone can be promoted.