中文摘要：

基于Miami模型，对黑河流域中游净初级生产力的人类占用（HANPP）及其与生态系统多样性的关系进行了研究，并对HANPP与生态足迹（EF）指标在可持续发展评估方面的价值进行了比较．结果表明：HANPP的提高将降低生态系统多样性，研究区现状年的平均HANPP率为38．61％，肃州区和甘州区的HANPP已超过生态系统潜在生产能力的极限；结合气候变化和社会经济发展状况进行分析，未来40年黑河流域中游生态系统将面临更大压力．与生态足迹（EF）相比，HANPP更适于从生态系统功能变化角度评估区域发展的可持续性．

英文摘要：

Based on Miami model, this paper calculated the human appropriation of net primary production （HANPP） in the middle reach of Heihe River basin, discussed the relations between the HANPP and ecosystem diversity, and compared the values of HANPP and ecological footprint （EF） in sustainability assessment. The results showed that the increase of HANPP decreased the ecosystem diversity, and the current average HANPP in study area was 38.61%. The HANPP in Suzhou and Ganzhou districts already exceeded the potential maximum productivity. Considering the climate change and the development of social-economics, the ecosystems in study area would face more stress in the coming 40 years. Comparing with EF, HANPP was more available for the assessment of sustainability in the sight of ecosystem function change.