Response of ecosystem services value to land use function change at the village scale in Gaochun District,Nanjing
Based on land use survey data from 2009 to 2019,using land use change models and ecosystem ser-vices value evaluation methods,this study reveals the spatio-temporal pattern of land use functions transition in 145 administrative villages in Gaochun District,analyzing the value profit and loss of ecosystem service and constructs sensitivity coefficients to measure the sensitivity of ecosystem services value to land use function transitions.Results show that:1)The production-eco-oriented function and eco-production-oriented function most widely distributed and dramatically transitioned land use types.The transfer area and proportion of the production-eco-oriented function are the largest,with a transfer rate significantly exceeding its contemporan-eous rate of addition,indicating a transition towards contraction-type land use function.Moreover,the spatial increment rates for eco-production-oriented function,residential production-oriented function,and ecological function spaces surpass their corresponding transfer rates during the same period,indicating of a transition to-wards expansion-type functional spaces.2)From 2009 to 2019,the ecosystem services value in Gaochun Dis-trict increased by 3.378 billion yuan.Among the various land types,aquatic land,arable land,and forest land contributed the most to the ecosystem services value.Hydrological regulation and waste disposal emerged as the predominant ecosystem service functions in Gaochun District.3)When land use function transitions from a low utilization index to a high utilization index,there is a decrease in ecosystem services value,and at this point,the change in land use intensity has a relatively small impact on the regional ecosystem services value.Conversely,when land use function exhibits a trend of transitioning from a high utilization index to a low util-ization index,there is an increasing trend in ecosystem services value,and the contribution of land use intens-ity changes to the regional ecosystem services value becomes more significant.4)Specifically,the ecosystem services value in Gaochun District has showed a significant increase,and the response of ecosystem services value to different land use function transitions varies.The transition of production-oriented function to residen-tial production-oriented function contributes 15.02％to the reduction of ecosystem services value,while the transition of production-eco-oriented function to eco-production-oriented function contributes 44.57％to the in-crease of ecosystem services value.
village scaleland use function transitionecosystem services valueGaochun
NETL
NSTL
万方数据
