Ecosystem Service Value of Jingtaichuan Electric Power Irrigation Engineering

• 作者: Dong Zhiyang Zhao Jianlin
• 来源期刊: 气象与环境研究:英文版
• 学科: 农学
• 关键词: IRRIGATION area ECOSYSTEM ECOLOGICAL MIGRATION ECOSYSTEM service value Jingtaichuan electric power IRRIGATION ENGINEERING
• 年，卷（期）: 2019,（2）
• 页码范围: 33-40
• 页数: 8页
• 分类号: S274

摘要

The ecosystem service value of Jingtaichuan electric power irrigation engineering( referred to as Jingdian engineering) was divided into internal value( the value of farmland system,shelter forest system outside of farmland and wetland waters) and external value( the ecological service value of ecological migration to the vegetation restoration of the Qilian Mountains) firstly,and then it was analyzed by using the model method and the factor equivalent method. The results showed that the internal ecological service value of Jingdian engineering was 36. 3 ×10~8 yuan,which was 25. 0 times larger than the total annual cost. The external ecological service value was 40. 05 ×10~8 yuan,which was 27. 6 times larger than the total annual cost. Among the three functional systems,the ecological service value of farmland system was the largest. The ecological service value of farmland system was mainly reflected in waste disposal,wind prevention and sand fixation,and food production. The external ecological service value was mainly the ecological service value of migration to vegetation restoration in the Qilian Mountains. Jingdian engineering is the only highlifting project that raises water to the desert in China. It transfers water from outer basins to control desertification and provides a successful road for ecological migration and desertification control in arid areas.