基于土地利用转型的生态服务交叉敏感性分析——以雄安新区为例

以雄安新区为研究区,将1998年、2008年、2017年3期遥感影像作为数据源,结合土地利用转移矩阵及转型特征信号识别方法,揭示土地利用转型特征,并应用生态系统服务价值测算修正模型及交叉敏感性系数模型,探讨雄安新区生态系统服务价值对土地利用转型的敏感程度。结果表明:(1)雄安新区地类转移主要发生在耕地向建设用地和水域的转移。(2)土地利用转型特征信号主要表现在水域、林地与耕地之间的转移。(3)生态系统服务价值逐年缩小,地均ESV低值区的变化率普遍偏高,其空间分布呈反向趋势。(4)水域、湿地、耕地和建设用地向其他地类转型对ESV的影响均较为敏感。研究结果可为如何在科学管理土地利用的同时实现生态服务功能的延续和提升提供借鉴。

Cross-Sensitivity Analysis of Ecological Services Based on Land Use Transition:A Case Study of Xiongan New Area

Xiongan New Area is taken as the research object.Remote sensing images of the third period of 1998,2008 and 2017 were taken as data sources,and the characteristics of land use transition were revealed by combining the land use transfer matrix and the recognition method of transfer feature signals.In addition,the revised model of ecosystem service value measurement and the cross-sensitivity coefficient model were applied to explore the sensitivity of ecosystem service value to land use transition in Xiongan New Area.Results showed that:(1)The land transfer in the Xiongan New Area mainly took place in the transfer of cultivated land to construction land and water area.(2)The signal of land use transition was mainly reflected in the transfer between water area,forest land and cultivated land.(3)The value of ecosystem services decreased year by year,and the rate of change in the low value area of ESV was generally high,and its spatial distribution showed a reverse trend.(4)The transition of water area,wetland,cultivated land and construction land to other land types was sensitive to the influence of ESV.The research results could provide reference for how to realize the continuation and improvement of ecological service function while scientifically managing land utilization.