2000—2015年长江中游地区生态系统服务时空变化特征

Spatial-temporal variation of ecosystem services in the middle reaches of the Yangtze River from 2000 to 2015

生态系统服务价值评估对生态管理有重要的指导作用。基于全球的单位价值量和空间异质因子对2000—2015年间长江中游地区生态系统服务进行价值评估和制图,结果表明:(1)2015年长江中游地区生态服务总价值约为1805亿美元(1.12万亿元人民币),2000—2015年间总价值基本不变,但其空间异质性变化显著;(2)2000—2015年耕地(水田和旱地)面积减少8.3%,对应的食物生产价值量减少6.2%;(3)长江中游地区3个城市圈附近生态服务价值量显著下降,而赣北地区的生态系统服务价值量明显上升。研究结果为生态服务的保护、利用、规划和管理提供了数据支撑。

The monetary assessment of ecosystem service plays an important role in guiding ecological management.Based on the global unit value and spatial heterogeneity factors,we evaluated and mapped ecosystem services value in the middle reaches of the Yangtze River from 2000 to 2015.The results showed that:(1)the total value of ecosystem services in the middle reaches of the Yangtze River is 18.5 billion USD(1.12 trillion RMB).It was nearly unchanged from 2000 to 2015,but there was significant spatial heterogeneity in area change.(2)The value of food production service decreased by 6.2%from 2000 to 2015,and the corresponding area of cultivated land(paddy and dryland)decreased by 8.3%.(3)The value of ecosystem services nearby three metropolitan areas decreased significantly,while the value of ecosystem services in northern Jiangxi increased significantly.These results provide data support for the protection,utilization,planning and management of ecosystem services.