摘要
利用经验模态分解(EMD)方法分解并提取1961~2001年中国人均生态足迹与生物承载力变化的波动周期,建立具有周期性波动的非线性动力学预测模型,预测未来20年中国人均生态足迹和承载力变化,评估中国未来可持续发展进程中面临的挑战。结果表明:(1)40年来,中国人均生态足迹在波动中不断增加,具有明显的3.5年和8年2个波动周期;中国人均生物承载力在波动中不断减少,具有明显的2.7年、28年和40年3个波动周期。(2)若一切照旧,即未来20年中国人均足迹与承载力保持过去40年的年均变化率不变,则生态足迹会持续上升,2015年将达到1.710gha/cap,2025年达到2.034gha/cap;人均生物承载力持续下降,2015年将达到0.851gha/cap、2025年降到0.806gha/cap;而人均生态赤字进一步拉大,2015年0.859gha/cap、2025年1.228gha/cap,可持续发展形势比较严峻。
The fluctuant cycles of China per capita ecological footprint and biocapacity from 1961 to 2001 is decomposed and picked-up based on empirical mode decomposition (EMD) method. Nonlinear dynamic prediction models are presented with the cycles. The results show that: 1) Over last 40 years, the obvious undulation cycle of China per capita ecological footprint (EF) growth is 3.5 years and 8 years. Per capita BC growth is 2.7 years, 28 years and 40 years. 2) The business-as-usual scenario looks at the consequences that China EF would be 1.710gha/cap in 2015, 2.034gha/cap in 2025 if the annual change rate of it would be constant. China biocapacity (BC) would be 0.851gha/cap in 2015, 0.806gha/cap in 2025. China ecological deficit (ED) would be 0.859gha/cap in 2015, 1.224gha/cap in 2025.
出处
《生态经济》
CSSCI
北大核心
2007年第11期33-36,46,共5页
Ecological Economy
基金
国家自然基金项目(编号:40371044)
国家"211"二期工程重大项目