大庆市生态系统服务价值时空变化分析

Spatial-Temporal Variation of Ecosystem Service Value in Daqing City

以1987年和2001年两期大庆市土地利用/覆被数据为基础,参照谢高地等制定的中国陆地生态系统单位面积服务价值系数及评估方法,结合研究区实际情况对估算方法进行了修正,对土地利用变化所引起的大庆市生态系统服务价值时空变化进行估算。结果表明:研究期内,大庆市生态系统服务价值从166.59亿元下降到118.24亿元,下降率29.02%;各县区生态系统服务价值空间差异显著,杜尔伯特所占比重最高,为40.74%,肇州最低,仅占5.58%;不同土地利用类型对生态系统服务价值的贡献率不同,2001年大庆市湿地、水体、耕地、草地、林地和未利用地对生态系统服务价值的贡献率分别为35.35%、28.76%、19.45%、11.18%、4.93%和0.32%。

Based on land use/cover data in 1987 and 2001, the changes of ecosystem service value （ESV） in Daqing city were analyzed. The parameters were revised by using the methods and models of ecological value estimation in view of the actual conditions of the study area. The results indicated that the ESV of Daqing city descended from 16.659 billion Yuan to 11.824 billion Yuan during the period of 1987 and 2001, and the descending ratio was 29.02%; the ESV of Duerbete County accounted for 40.74% of Daqing＇s in 2001, and that of Zhaozhou County was only 5.58%; the contribution rates of different land use to the ESV of Daqing were different with wetland 35.35%, water area 28.76%, cropland 19.45%, pasture 11.18%, woodland 4.93% and bare land 0.32%.