Temporal-spatial variation characteristics of utilization efficiency of water resources in Changbai Mountain area

Changbai Mountain area is an important water source in Jilin Province, China. In recent years, due to the accelerated development, over-exploitation and ecological environment destruction of the region, the water resource problem of the region is becoming more and more prominent. Effectively solving water resources problems and achieving sustainable utilization of water resources have become important issues for regional development. Using Changbai Mountain area as the study area, the water utilization efficiency of Changbai Mountain area from 2009 to 2018 was measured and analyzed using data envelopment analysis (DEA-Malmquist) index model. The results show that in 2009-2018, the overall water utilization efficiency of 19 cities and counties in this area is at a moderate to low level, where the overall efficiency is 0.772, the pure technical efficiency is 0.853, and the scale efficiency is 0.891. The percentage of cities and counties that reached DEA effective in each year from 2009-2018 was 32%, 36%, 53%, 63%, 58%, 58%, 58%, 63%, 47%, and 32%, respectively. From 2009 to 2018, the total factor index of water resources utilization efficiency in Changbai Mountain area overall showing a downward trend in volatility, with an overall decreasing trend of 13.4%. There are uneven and unbalanced problems in water resources utilization efficiency in Changbai Mountain area. And improving the pure technical efficiency is the key to solving the problem of water resource utilization efficiency.

Automated summary

The Changbai Mountain area in Jilin Province, China, is an important water source. In recent years, the region has faced increasing water resource problems due to accelerated development and ecological environment destruction. The study found that the overall water utilization efficiency in the area is at a moderate to low level, and improving pure technical efficiency is the key to solving the problem.