【摘要】 基于调查数据、卫星遥感数据、统计数据等,在县域尺度上,系统评估了陕西省生态系统食物供给、碳固定、水源涵养、水土保持和生物多样性5种重点服务功能现状,并在此基础上进行了生态系统服务簇分析和生态功能区划分。结果表明:1)陕西省生态系统服务呈现明显的空间差异,食物供给呈现中部高,南北低的趋势;其余4种服务呈现出协同变化,功能呈现由南到北的减低趋势;2)陕西省可划分为5个生态系统服务簇,对应5个生态系统区,其中陕北风沙区各项生态系统服务功能均较低,而陕南秦岭山地除了食物供给,其它服务功能均较高。该研究基于生态系统服务簇,探索了科学的生态功能分区方法,可为政府有针对性地进行区域生态建设政策的制定和合理地环境整治提供科学依据。更多还原

【Abstract】 Based on the field survey data and satellite remoted sensing data,the five key ecological services,including food provision,carbon sequences,water retention,soil and water conservation and biodiversity in Shaanxi Province were evaluated.The ecosystem service bundles analysis and functional division were carried out in the following steps.The results showed that 1) there were obvious spatial differences towards the distributions of ecosystem services of Shaanxi Province.The values of food supply were higher in the middle than the southern and northern Shaanxi.The other four services showed synergistic changes,and the function showed a decreasing trend from the south to north;2) Shaanxi Province could be divided into five ecosystem service clusters which represented five ecosystem divisions respectively.The ecosystem services of the northern wind-blown areas were relatively low,while the Qinling Mountains in southern Shaanxi had higher service functions except food supply.This research was focused on the analysis of ecosystem service bundles,which could provide a scientific basis for the government decision about ecosystems management.更多还原