甘南黄河重要水源补给区生态功能服务价值评价

Evaluation on Service Value of Ecological Function in Important Water-Supply Area of Yellow River in South Gansu

甘南黄河重要水源补给区生态系统类型多样,生物多样性丰富,这些保存较为原始的生态系统发挥着巨大的生态服务功能。生态指标体系估算表明,本区域生态系统年涵养水源、补给河流、保护生物多样性、固碳释氧等生态服务功能价值总计约318.1亿元。因此,保护和恢复生态系统和生物多样性是维持生态系统稳定、保育生态过程和维系黄河流域生态安全的根本措施。

There are diverse ecological system types and rich life-form species in the important water-supply area of Yellow River in South Gansu, which not only produced large of products, but supplied immense ecological service function. The estimation result of ecological index system showed that the total value is thirty-one billion, eight hundred and ten million Chinese yuan, of ecological service of annual conserving water, supplying river, protecting biodiversity, fixing carbon ＆ releasing oxygen and so on in this area. So it is the fundamental measure that protecting and restoring ecological system and biodiversity to keep ecological system stabilization, conserve ＆ raise ecological course and maintain ecological security in Yellow River valleys.