柳江流域生态系统服务价值的影响研究  

The study of ecosystem service values of Liujiang River Basin

作　　者：杨昆[1] 贺磊[1] 许乃中[1] 周雯[1] 张玉环[1] 

机构地区：[1]环境保护部华南环境科学研究所,广州510655

出　　处：《生态科学》2016年第4期148-156,共9页Ecological Science

基　　金：环境保护部华南环境科学研究所中央级公益性科研院所基本科研业务专项;中央级环保公益性科研专项(2013467042)资助项目

摘　　要：以柳江流域1991,2002和2013年三期遥感影像数据为数据源,在调整生态系统服务价值系数的基础上,估算了流域生态系统服务价值和空间格局及动态变化,探讨了城市化与生态系统服务价值之间的关系。结果表明：1991—2013年期间,柳江流域生态系统服务价值减少了23891.7×10^6元,下降了8.67%;下游生态系统服务价值降低的年变化率最高,达0.5%。林地、水域减少和建设用地增加是流域生态系统服务价值下降的主要原因。提供食物生产的生态系统服务价值呈增加趋势,其他各单项价值都呈减少趋势,而提供水文调节的生态服务价值下降速度最快。生态系统服务价值降低的区域（12.5%）大于升高的区域（3.4%）且主要分布在中下游。城市化水平与流域生态系统服务价值呈现递减关系,优化流域土地利用方式,充分补偿生态系统服务价值的损失,可维护区域生态系统健康和社会经济可持续发展。The paper estimates ecosystem service values of Liujiang River Basin（LRB） and analyzes its spatial patterns and dynamics based on the coefficient adjustments of ecosystem service values. And the relationship between urbanization and ecosystem service value is also discussed. Three sets of remote sensing images were used in this paper（1991, 2002 and 2013）. The results indicate that during 1991-2013, ecosystem service values of LRB decreased by 23891.7×10^6yuan（8.67%）, with the highest annual decreased rate（0.5%） in downstream. The reduction of woodland and water body and the increase of construction land accounted for this decreasing trend of ecosystem service values. The ecosystem service values for food production demonstrated an increasing trend, whereas the values for other services showed a decreasing trend, especially the service values for hydrological regulation showed the highest decline rate. The results also indicate that the area（12.5%） with decreased ecosystem service values is larger than that with increased ecosystem values（3.4%）, mostly located in middle and downstream. The paper shows that the level of urbanization tends to be negatively associated with ecosystem service values of river basin. Therefore, land use planners should strive to optimize land use patterns and compensate the values loss of ecosystem services in order to protect the health of regional ecosystems and maintain the sustainable development of economy and society.

关 键 词：柳江流域 土地利用 生态系统服务价值 城市化 

分 类 号：X171[环境科学与工程—环境科学]