土地利用的生态服务价值——以北京市平谷区为例

土地是一切陆地生态系统的载体 ,人类的一切活动同样离不开土地 ,在人类改造和利用自然的过程中不可避免地要影响各类生态系统的状况进而影响到它们为人类所提供的服务与功能。在综合已有研究的基础上 ,针对平谷区做出修正 ,计算得出平谷区 1996年至 2 0 0 1年 5年间在GDP增加 14 6亿元的情况下生态价值增加了 0 3亿元 ,很好地实现了经济与生态的协调发展。但是与全国的平均水平相比生态价值所占比例偏低 ,建议该地区在土地利用结构中还应加大生态建设的比重。

The Value of Ecosystem Service of Land Use a Case Study in Pinggu

Land is the carrier of all terrestrial ecosystems,human cannot survive without it.Inevitably, people affect ecosystems and services supplied to human beings during their process of land use. Based on the research we integrated, we evaluate the ecosystem services in Pinggu, a county of Beijing, depending on summarized parameters. It was found that the value of ecosystem service increased 3261 36 million Yuan from 1996 to 2001 with GDP increasing 146214.5 million Yuan. The result we obtained announced the development of Pinggu in 5 Years is sustainable and the relation of ecology and economy is harmonious. But is it lower than the average level in China. Therefore,we suggest that ecological construction should be taken into account in the land use frame of Pinggu.