Methods to Assess the Benefits of Irrigation and Water Conservancy Projects
HE Hui
SHAO Dongguo
LIU Boyu
GUO Yanhong
YIN Liming
XU Yijun
Abstract：[Objective]Study the composition and quantitative assessment of comprehensive benefits of irrigation and water conservancy.[Method]We proposed an assessment indicator system in this paper to quantitatively assess the comprehensive benefits of irrigation projects, based on the concept of the comprehensive benefits of irrigation and water conservancy. The assessment system included economic benefits, social benefits and eco-environment benefits. The index weights were calculated by combining the weighting method and the AHP Entropy. A much improved quantitative assessment model was thus build. Taking the irrigation and water conservancy of Hunan Province as an example for case study, we analyzed the economic benefits, social benefits and eco-environment benefits of the large irrigation and drainage projects after revamping them.[Result]The social benefits overweighed the economic benefits, while the eco-environment benefits could become negative. Except for Chenzhou, the eastern and western regions in the province were found to have a better economic return and social benefits. The benefits ranked on the top three were: disaster prevention and mitigation benefits, contributions to outof- poverty benefits and farmland ecological breeding benefits.[Conclusion]The assessment emphasizes social benefits and eco-environment benefits, taking into account the negative benefits to water environment, so it conforms to the principle of modern water conservancy ecology, which make the results more reliable and truer.
Keywords：irrigation and water conservancybenefits assessmentquantitative methodHunan province
Publication Date：2018-01-01
Online Publishing Date：2026-09-12(First online date of this platform, not the publication date of the document)
Pages：8( 121-128 )