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Human appropriation of aboveground photosynthetic production in the Czech Republic

机译：捷克共和国人类对地上光合生产的拨款

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We assessed human impacts on ecosystems by calculating the proportion of aboveground net primary production appropriated by humans (aHANPP) in the territory of the Czech Republic. The human appropriation of aboveground net primary production reached 21.5 Tg C per year in 2006 or 56% of the annual potential natural productivity. Harvested productivity equivalent aNPP_H is contributing to the overall appropriation of photosynthetic production by 80%. Considerable productivity losses have been induced by agricultural land conversion and urbanization. While artificial surfaces are responsible for the appropriation of whole ecosystem production, productivity of urban green areas and managed forests can even exceed natural productivity levels. In the period 1990-2000, the aHANPP dropped by 7%, but the indicator shows an increase by over 2% in the period 2000-2006. The indicator of human appropriation of net primary production enables translation of land cover changes into measures of ecosystem services affected by human activities. We found aHANPP to be a suitable indicator of human impacts on ecosystems, as it detects trends and enables spatial mapping of human impacts.
机译：我们通过计算人类在捷克共和国境内占有的地上净初级生产净额（aHANPP）的比例，评估了人类对生态系统的影响。 2006年，人类对地上净初级生产的拨款达到了每年21.5 Tg C，占年度潜在自然生产力的56％。等同于aNPP_H的收获生产力对光合生产的总体拨款贡献了80％。农用土地转化和城市化已引起相当大的生产力损失。尽管人造表面负责整个生态系统的生产，但城市绿地和人工林的生产力甚至可能超过自然生产力水平。在1990-2000年期间，aHANPP下降了7％，但指标显示在2000-2006年期间增长了2％以上。人类占用净初级生产的指标使土地覆盖变化能够转化为受人类活动影响的生态系统服务的度量。我们发现aHANPP可以作为人类对生态系统影响的合适指标，因为它可以检测趋势并实现人类影响的空间映射。

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