基于LUCC的太行山区生态系统服务价值时空特征分析

Spatial and Temporal Characteristics of Ecosystem Service Values in Taihang Mountains Based on LUCC

分析太行山区生态系统服务价值时空特征可为该区的合理利用与保护及其生态功能的发挥提供数据支撑。本研究立足河北太行山区县域尺度,基于2000年、2010年与2018年土地利用数据,在分析土地利用变化特征的基础上探讨其生态系统服务价值的数量变化、空间特征及区域差异性,并在文末探讨了土地利用变化对生态系统服务价值的影响,以期找出影响ESV的主要用地类型,为土地利用格局优化与ESV提升提供参考。结果表明:(1)研究区土地利用类型以森林、草地和农田为主,在研究期内土地利用类型发生一定变化,土地利用动态度有所上升。(2)近18年间,研究区的ESV整体呈下降趋势,最突出的生态系统服务为调节服务;按区域差异性将28个县域可分为三类不同区域。(3)适当增加旱地、乔木林地、滩地等能推动该区生态系统向好发展,草地面积变化对ESV影响较大且趋势尚不明朗,需深入探究。

Analysis of the spatial and temporal characteristics of ecosystem service values in the Taihang Mountains can provide data to support the rational use and conservation of the area and its ecological functions.Based on county-scale land use data from 2000,2010 and 2018,this study explores the quantitative changes,spatial characteristics and regional variability of ecosystem service values in the Taihang Mountains of Hebei based on the analysis of land use change characteristics.The paper also explores the impact of land use change on ecosystem service values,with a view to identifying the main land use types affecting ESV and providing reference for land use pattern optimization and ESV enhancement.The results show that:(1)The land uses types in the study area are mainly forest,grassland and farmland,and the land use types have changed to some extent during the study period,and the land use dynamic attitude has increased.(2)The overall ESV in the study area has been decreasing in the past 18 years,and the most prominent ecosystem service is regulation service;the 28 counties can be divided into three different types of areas according to regional variability.(3)Appropriate increase of dryland,tree woodland and beachland can promote the development of the ecosystem in the area for the better,and the change of grassland area has a greater impact on ESV and the trend is still unclear,which needs to be explored in depth.