新疆农业技术进步下农业用水反弹效应测算

Measurement of the Rebound Effect of Agricultural Water Use Under the Agricultural Technological Progress in Xinjiang

  • 摘要:
    目的/意义 引入农业用水反弹效应对新疆各地区进行量化评级,研究新疆地区农业技术进步对农业用水总量和节水效果的推动影响程度,为新疆分地区农业技术节水提供改进依据。
    方法/过程 基于2005—2020年新疆地区各地州面板数据,运用DEA模型测算新疆地区农业技术进步率,通过带有农业技术进步率的农业用水反弹效应结合实际情况,探究农业节水技术进步、农业用水反弹效应、农业用水总量之间关系。
    结果/结论 结果表明:(1)新疆地区及各地州农业技术进步率为正值且均值大于0.9;(2)新疆地区用水反弹效应均值为0.96,农业节水技术增加了水资源利用效率减少了农业用水总量,但效果并不明显;(3)各地州反弹效应各有不同且均出现了不同程度的农业用水反弹效应,其中南疆地区反弹效应最为平均且总反弹最低,北疆地区反弹效应分布离散且出现“回火”现象,东疆地区较为平均;(4)农业技术进步对新疆各地州农业用水反弹效应影响显著。据此提出相应改进措施,包括:加强种植结构调整,实行“以水定地”差异化执行和监管措施,加快水利工程建设,推进用水分级补贴政策,因地制宜推出节水政策等。

     

    Abstract:
    Objective/Meaning The rebound effect of agricultural water use was introduced to quantify the rating of various regions in Xinjiang, and the influence of agricultural technological progress on the total amount of agricultural water use and water-saving effect in Xinjiang was studied, so as to provide the basis for improving the water saving of agricultural technology in Xinjiang.
    Methods/Procedures Based on the panel data of various prefectures in Xinjiang from 2005 to 2020, the DEA model was used to measure the rate of agricultural technological progress in Xinjiang. Through the rebound effect of agricultural water use with the rate of agricultural technological progress, combined with the actual situation, the relationship among the agricultural water-saving technological progress, the rebound effect of agricultural water use and the total amount of agricultural water use was explored.
    Results/Conclusions The results showed that: (1) The rate of agricultural technological progress in Xinjiang and its various prefectures was positive and the mean value was greater than 0.9. (2) The mean value of the rebound effect of water use in Xinjiang was 0.96. The agricultural water-saving technology increased the utilization efficiency of water resources and reduced the total amount of agricultural water use, but the effect was not obvious. (3) The rebound effect of agricultural water use was different in different states and there were different degrees of rebound effect of agricultural water use, among which the rebound effect in southern Xinjiang was the most average and the total rebound was the lowest. The distribution of rebound effect in northern Xinjiang was discrete and there was a phenomenon of “tempering”, while the rebound effect in eastern Xinjiang was relatively average. (4) The progress in agricultural technology had a significant impact on the rebound effect of agricultural water consumption in various regions and prefectures of Xinjiang. Accordingly, the corresponding improvement measures were put forward, including strengthening the adjustment of planting structure, implementing the differentiated implementation and supervision measures to “define land based on water”, accelerating the construction of water conservancy projects, promoting the policy of graded subsidy for water use, and introducing the water-saving policies according to the local conditions.

     

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