摘要

通过遥感数据分析反演,测算草地净初级生产力、草地植被覆盖度、土壤侵蚀量等重要生态系统参数,进而计算草地生态系统有机物生产、营养物质循环、固碳释氧及水源涵养、土壤侵蚀损失量,再通过影子工程法、市场价值法等环境价值评估方法从以上5个方面评价草地生态系统破坏的经济损失.研究结果表明,2006年中国草地生态系统生态破坏损失为1446.8亿元,占2006年中国GDP的0.69%;在草地生态破坏造成的各项损失中,水土保持的贡献率最大,占总经济损失的52.00%;过度放牧是造成中国草地生态系统破坏的重要原因.

Using remote sensing data and the retro-extrapolation method,we evaluated the grassland ecosystem degradation in China by the following three major indicators:grassland net primary productivity(NPP),vegetation coverage rate,and soil erosion.Its ecological implications were then evaluated along the following five dimensions:organic substance production,nutrient circulation,oxygen release and carbon sequestration,water conservation,and soil erosion.Furthermore,the associated economic losses with grassland deg...

关键词

草地; 生态系统; 破坏; 经济损失; 遥感

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遥感技术支持下的草地生态系统破坏经济损失评价.pdf