摘要
采用Constanza等的估测方法,利用1997～2006年凉州区土地变化数据,估算了凉州区生态系统服务价值变化特征。结果表明:1997～2006年间,凉州区生态系统服务价值总体呈上升趋势,土地利用变化保护了该区域生态系统的服务功能,使生态系统服务价值从1997年的25.32亿元增加到2006年的25.73亿元,增加0.41亿元,增幅1.63%。说明9年间凉州区经济发展的同时生态环境也有所改善;生态系统服务价值与GDP比值逐年减小,说明凉州区生态环境建设速度小于经济建设速度,生态环境改善的力度还不够,仍需加大环境治理和生态保育的力度。在此基础上,提出了应加强凉州区水源涵养林区和天然草场的保护和建设,加强耕地的封育保护,合理控制城镇建设用地,进一步提高凉州区的生态系统服务功能的措施。
The dynamics of the ecosystem service value were evaluated by using the database of land use during 1997～2006 and Constanza estimation methods.The results indicated that the ecosystem service value has been rised due to the land use change in in the past 9 years.The total ecosystem service value in the study area rised from 2.532 billion yuan to 2.573 billion yuan in period of 1997～2006. There was 1.63% net increase of 0.41 billion yuan.But the ratio of ecosystem service value and GDP decreased year after year,which indicates that the the growth rate of ecosystem service value is less than economic＇s,and the development of ecological environment is positive.However,the efforts of improving the ecological environment is not good enough,which need to be further strengthened.On the basis,we should strengthen the measure of protective and constructive water conservation forest area,natural pasture and arable land,reasonably control the expansion of urban construction land,as far as possibly enhance Liangzhou District ecosystem service function.
出处
《干旱地区农业研究》
CSCD
北大核心
2011年第5期224-229,共6页
Agricultural Research in the Arid Areas
关键词
凉州区
生态系统服务价值
Liangzhou District
ecosystem service value
