辽宁省水源涵养服务功能的空间分布特征

水源涵养功能作为生态系统服务功能的重要组成部分,对区域生态系统生产力、物质循环和其他功能都会产生重要影响。探明区域内水源涵养特征可以为生态系统管理和保护提供决策支撑。以辽宁省全域为研究区,采用水量平衡法综合分析了辽宁省水源涵养空间分布特点。水源涵养服务功能最高的区域为辽东地区,其中丹东市最高,总水源涵养量为504.33亿m3,占辽宁省总水源涵养量的34.84%;其次为本溪市和抚顺市,分别为244.06亿m3和227.39亿m3,分别占辽宁省总水源涵养量的16.86%和15.71%。辽西区域水源涵养量最低,其中阜新市和朝阳市水源涵养量分别为8.21亿m3和5.77亿m3,分别占总水源涵养量的0.57%和0.40%。辽宁省水源涵养服务功能总体表现为东部区域高、西部区域低的分布特征。

As an important part of ecosystem service function,water conservation function has an important impact on regional ecosystem productivity,material circulation and other functions.Identifying the spatial pattern of water conservation can provide decision support for ecosystem management and protection.This paper takes the whole area of Liaoning Province as the main research area,using the water balance method to analyze the spatial distribution characteristics of water conservation.The region with the highest water conservation service function is Liaodong,of which Dandong city is the highest with the total water conservation amount of 50.433 billion m3,accounting for 34.84%of the total water conservation amount of Liaoning Province.Next are Benxi city and Fushun city,which account for 24.406 billion m3 and 22.739 billion m3 respectively,accounting for 16.86%and 15.71%of the total water conservation in Liaoning.The water conservation in western Liaoning is the lowest,among which the water conservation in Fuxin city and Chao yang city are 821 million m3 and 577 million m3 respectively,accounting for 0.57%and 0.40%of the total water source conservation.The water conservation service function of Liaoning province is generally characterized by high in the eastern region and low in the western region.