WANG Zhao,ZHANG Tinglong,LI Shuang,et al.Variation of Water Resources Utilization Efficiency in Mainstream of Hanjiang River Based on DEA & Malmquist Index[J].Research of Soil and Water Conservation,2023,30(01):291-296.[doi:10.13869/j.cnki.rswc.2023.01.022]
基于DEA和Malmquist指数的汉江干流水资源利用效率变动研究
- Title:
- Variation of Water Resources Utilization Efficiency in Mainstream of Hanjiang River Based on DEA & Malmquist Index
- 文章编号:
- 1005-3409(2023)01-0291-06
- Keywords:
- water footprint; green efficiency of water resources; DEA; total factor productivity; Hanjiang River
- 分类号:
- F062.2
- 文献标志码:
- A
- 摘要:
- 水资源利用效率的提升对于缓解水资源供需矛盾具有极为重要的意义。选取汉江干流10个地市,运用数据包络法(DEA)计算了2008—2015年水资源利用效率,并利用Malmquist全要素生产率指数模型分析了水资源绿色效率全要素生产率和分解指数的动态变化。结果表明:汉江干流不同地市的水资源利用效率具有较大的时空分异特征,中下游地市的水资源经济效率普遍高于中上游地市; 水资源绿色效率较高的城市经济发展较为缓慢且集中分布在下游地区。2008—2015年水资源经济效率逐渐下降,而水资源绿色效率先增加后减小; 除武汉市和安康市的全要素生产率一直保持积极有利发展趋势外,其他城市的全要素生产率主要受技术约束和规模效应的影响而未能达到期望值。研究成果可为水资源优化配置提供参考。
- Abstract:
- The improvement of water resources utilization efficiency is of great importance to alleviate the conflict between water resources supply and demand. In this paper, 10 municipalities in the main stream of Hanjiang River Basin was selected, the water resources utilization efficiency from the year of 2008 to 2015 was analyzed by using the method of data envelopment method(DEA). Subsequently, the total-factor productivity with its compositional index of water resources green efficiency was illustrated in detail by using Malmquist index model. The results show that the water resources utilization efficiencies of different cities in the main stream of Hanjiang River had the characteristics of temporal and spatial variability, the water resources economic efficiencies of cities in the middle and lower reaches were generally higher than those of the cities in the middle and upper reaches; the economic developments of cities with a higher water resources green efficiencies were relatively slower and concentrated in the downstream areas of Hanjiang River Basin; from 2008 to 2015, the water resources economic efficiency gradually decreased, while the water resources green efficiency increased first and then decreased; except that the total factor productivities of Wuhan and Ankang had maintained a positive and favorable development trend, the total factor productivities of other cities were mainly affected by technical constraints and scale effect. These research results can provide a reference for the optimal allocation of water resources.
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备注/Memo
收稿日期:2021-09-28 修回日期:2021-10-19
资助项目:陕西省自然科学基础研究计划“陕北黄土高原侵蚀分形特征”(2021JZ-17)
第一作者:王朝(1996—),男,陕西咸阳人,硕士研究生,从事土地资源与空间信息技术研究。E-mail:wzgis@nwafu.edu.cn
通信作者:张青峰(1974—),男,山西孝义人,教授,博士生导师,主要从事土壤侵蚀与水土保持研究。E-mail:zhqf@nwsuaf.edu.cn