关键词: 资源环境工程；InVEST模型；生态系统服务；生态保护红线；土地利用变化

Abstract: The integrate valuation of ecosystem services and tradeoffs (InVEST) model was used to calculate three ecosystem services respectively, such as the carbon storage, water supply and soil conservation of ecological conservation redline of Chongqing from 2015 to 2018. The results show that: ①The carbon storage in ecological conservation redline area of Chongqing is increased from 2015 to 2018, which is slightly from 6.8×107 t in 2015 to 7.1×107 t in 2018, with a change rate of 3.54%. ②The water supply is decreased slightly from 2015 to 2018, which is from 2.8×1010 mm in 2015 to 2.6×1010 mm in 2018, with a change rate of -7.70%. ③The soil conservation is decreased from 2015 to 2018, which is rapidly from 9.7×1010 t in 2015 to 7.8×1010 t in 2018, with a change rate of -19.74%. ④The comprehensive ecosystem service function of the study area is reduced. The comprehensive evaluation score of ecosystem service of ecological conservation redline in 2015 is 6.02 and that in 2018 is 5.57.

Key words: resources environment engineering; InVEST model; ecosystem services; ecological conservation redline; land use change