摘要
选取海河流域为研究区域,建立了其生态系统服务价值的参数表,系统评估了该流域变化环境下生态系统的服务价值。基准状态下海河流域生态服务总价值为3638.45亿元,相当于该流域2000年社会经济系统创造GDP的31.4%。进行修正后,该流域生态总价值达到4639.95亿元,相当于该流域2000年社会经济系统创造GDP的40.0%。其中农田的生态服务价值的贡献率最大,占总生态服务价值的55.88%。从空间分布上来看,基准状态下流域生态环境状态较差,该流域西北部山区平均生态价值量大于东南部平原,海拔低于200m的平原生态价值偏低;除河口部分区域,海拔在200m以上的丘陵和山地地带,生态价值相对较高。对生态价值参数进行修正后,该流域除了渤海湾周边区域及内陆部分地区,生态价值总体都有所提高。
Taking the Haihe River basin as a case study area, the ecosystem value is systematically calculated in this paper based on the current research on ecosystem service function in this area. Results show that in the natural state, the total value of ecological services is 363.845 billion RMB, which is about 31.4 percent of the GDP in year 2 000 over the basin. The proportion of ecological value of farmland is the biggest. Under the impact of human activities, the ecological value per unit area of farmland, forests, grassland increased, the total value of ecological services is 463.995 billion RMB, which is about 40 percent of the GDP of 1 160 billion RMB in 2 000 year over the basin. Among them, the value of farmland is the biggest, accounting for 55.88%. For the spatial distribution, in the natural state the ecological value is poorer in mountainous areas than in southeastern plains. Under the influence of human activities the total value of ecological is relatively high.
出处
《水利学报》
EI
CSCD
北大核心
2010年第9期1121-1127,共7页
Journal of Hydraulic Engineering
基金
国家重点基础研究发展计划项目(2006CB403401)
国家自然科学基金创新研究群体基金项目(50721006)
关键词
生态系统
价值评估
服务功能
空间差异
海河流域
ecosystem system
value assessment
service function
spatial analysis
Haihe basin
