基于需求的京津冀地区生态系统服务价值时空变化研究

Evaluation and Analysis of Ecosystem Services Value in Beijing-Tianjin-Hebei Region Based on Demand Zoning

在分析生态系统服务供需逻辑关系的基础上选择指标,评估京津冀地区生态系统服务需求状况,划定需求类型区。基于2000和2015年土地利用现状数据,分析生态系统服务价值的时空变化,并提出相应的土地利用策略。结果表明:1)人类对生态系统有物质、环境和文化三大需求,对应生态系统供给、调节、支持和文化4大功能中的9项服务,可以从人口数量、经济水平、产业发展和教育水平4个方面来评估;2)京津冀地区生态系统服务需求空间差异较大,可以划分为极高需求区、高需求区、中需求区和低需求区;3)在所研究的时段内,京津冀地区生态系统服务总价值降低,县域生态系统服务总价值和地均价值在空间上呈现总体上从北往南逐步降低的特征;4)不同需求类型区的生态系统服务价值分布不均衡,2000—2015年间各类型区价值都有所降低,不同类型区的土地利用策略不同。

Based on the analysis of the logical relationship between supply and demand of ecosystem services,this study evaluates the demand status of ecosystem services in Beijing-Tianjin-Hebei region,delimits the demand type areas,calculates the spatial and temporal changes of ecosystem services value(ESV)based on land use status maps in 2000 and 2015,and puts forward corresponding land use strategies.The result is as follows.1)Human beings have material,environmental and cultural needs for ecosystem.The demand for ecosystem services can be evaluated from four aspects:population,economic level,industrial development and educational level,corresponding to the nine services of the four functions of ecosystem,including supply,regulation,support and culture;2)There is a large gap in the demand for ecosystem services in Beijing-Tianjin-Hebei region,which can be divided into four types:extremely high demand area,high demand area,medium demand area and low demand area.3)From 2000 to 2015,the total value of ecosystem services in Beijing-Tianjin-Hebei region decreased.At county level,the total value of ecosystem services and the average value of land decreased gradually from north to south in space;4)The value distribution of ecosystem services in different demand areas was unbalanced.From 2000 to 2015,the value of all types of areas has decreased,and the land use strategies of different types of areas are different.