基于生态服务价值的甘州区土地利用变化生态效应研究

利用生态服务价值框架及构建区域综合生态效应指数，揭示2001—2029年甘州区生态系统服务功能价值总量，以及各地类生态服务价值变化状况。研究表明：1）甘州区生态系统服务价值总值15年来共增加了6 169.45×10^4元，增加幅度达到7.44%；2）2001—2015年，草地、林地、交通水利用地的生态系统服务价值呈增加趋势，增加总量为9 478.76×10^4元，耕地、园地、水域、未利用土地和建设用地的生态系统服务价值呈减少趋势，减少总量为3 714.75×10^4元；3）生态系统中原材料生产、气候调节、保持土壤、维持生物多样性变化大，其中保持土壤增加最多，其次是维护生物多样性、气体调节、气候调节、原材料生产的生态服务价值。4）2022—2029年甘州区的生态服务价值总量将进一步提高，生态环境进一步好转。

ECOLOGICAL EFFECT STUDY ON LAND USE CHANGES IN GANZHOU DISTRICT BASED ON ECOLOGICAL SERVICING VALUES

This paper employs ecological servicing values framework and regional comprehensive ecological effect indictors to uncover the gross amount of servicing values and their changes of ecological system in Ganzhou district during 2001 to 2029. The gross servicing values of Ganzhou's ecological system has increased by 61 694.5k RMB, up to 7.44% over past 15 years. That of grassland, forest and traffic water conservancy shows a rising trend with increment by 94 787.6k RMB, but a descending trend on farmland, garden, water, unused land and construction land with a reduction by 37 147.5k RMB. Changes of ecological servicing values on raw material production, climate conditioning, soil maintaining, and biodiversity maintaining in ecological system is variable, more on soil maintaining, and followed by biodiversity maintaining, climate conditioning and raw material production. The gross ecological servicing values of Ganzhou are estimated to be rising further during 2022 to 2029 with an improving ecological environment.