SCIENTIA GEOGRAPHICA SINICA ›› 2019, Vol. 39 ›› Issue (5): 836-846.doi: 10.13249/j.cnki.sgs.2019.05.015

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Spatio-temporal Pattern Evolution and Influencing Factors of Governance Efficiency of Soil and Water Loss in the Weihe River Catchment

Wang Yifei(), Yao Shunbo(), Deng Yuanjie   

  1. Resources and Environmental Economics and Management Center, College of Economic and Management, Northwest A & F University, Yangling 712100, Shaanxi, China
  • Received:2018-04-27 Revised:2018-08-11 Online:2019-05-10 Published:2021-03-17
  • Contact: Yao Shunbo E-mail:wangyifei1223@nwsuaf.edu.cn;yaoshunbo@163.com
  • Supported by:
    National Natural Science Foundation of China(71473195);Special Fund for Forest Scientific Research in the Public Welfare Project(201504424)

Abstract:

Objectively assessing the effectiveness of ecological restoration measures and analyzing effective ways to promote the efficiency of ecological management are important scientific and policy issues in the Weihe River Basin. Using an interdisciplinary approach, the aim of this study is to measure the control efficiency of the Sloping Land Conversion Program(SLCP)and terrace fields on soil and water loss by adopting the Bootstrap-DEA model and using a comprehensive dataset (including biophysical and socioeconomic data) from 39 counties in the period 2000-2015. Then, exploratory spatial data analysis (ESDA) was used to capture the spatial correlation in overall control efficiency. Finally, geographically weighted regression (GWR) was employed to identify the spatial heterogeneity and evolutionary characteristics in the relationship between control efficiency and natural conditions and socioeconomic development in each sample county.Results show that the control efficiency of soil erosion increased from 0.263 to 0.336 during the study period. The increase of the treatment efficiency for soil and water loss in the early stage was due to the improvement of pure technical efficiency; while later the scale efficiency played a leading role in promoting the treatment efficiency. In addition, the efficiency showed a stable spatial agglomeration. The hotspots of efficiency were concentrated primarily in Baoji City, while the cold-spot center was Lintong, the radius of which extended to the municipality districts of Xi'an, Gaoling, and Fuping. The difference in control efficiency is the result of a combination of multiple factors; the factors affecting control efficiency vary across counties, indicating that regional governments should consider full-scale initiatives.

Key words: sloping land conversion program, Bootstrap-DEA, Geographically Weighted Regression(GWR), exploratory spatial data analysis(ESDA), the Weihe River catchment, control efficiency

CLC Number: 

  • X321/F812