【摘要】 选取陕西省1992、1999、2003年三期土地利用的动态数据,应用Costanza等提出的生态系统服务价值系数,分析了由于土地利用类型的变化所引起的生态系统服务价值的变化。发现:从1992年到1999年间生态系统服务价值从7168.12×106美元增加到7542.47×106美元,但从1999年到2003年间生态系统服务价值迅速减少到7145.53×106美元,生态系统服务价值每年变化率为1.3%,远高于总的年变化率0.08%。更多还原

【Abstract】 By selecting the dynamic data about land use in Shanxi province in 1992,1999 and 2003,and using the coefficients of value of ecological system service raised by Costanza,the author analyzes the alteration of the value of ecological system service caused by change of the land using pattern.The results show that the value of ecological system service rose from 7168.12×10~6$ to 7542.47×10~6$ from 1992 to 1999,but reduced to 7145.53×10~6$ dramatically from 1999 to 2003.The annual alteration rate of the value of ecological system service is 1.3%,much higher than the total alteration rate of 0.08%.更多还原