| This article has been：Browse 1835Times Download 2604Times |
scan it! |
|
|
| DOI：10.13522/j.cnki.ggps.2017.0046 |
|
| Methods to Assess the Benefits of Irrigation and Water Conservancy Projects |
|
HE Hui, SHAO Dongguo, LIU Boyu, GUO Yanhong, YIN Liming, XU Yijun
|
|
State Key Laboratory of Water Resources and Hydropower Engineering Science, Wuhan University, Wuhan 430072, China;Hunan Water Conservancy and Hydropower Science Research Institute, Changsha 410007, China
|
| 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 out-of-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. |
| Key words: irrigation and water conservancy; benefits assessment; quantitative method; Hunan province |
|
|
