| Comprehensive assessment of subsurface drainage construction in the Yellow River Delta |
|
View Fulltext View/Add Comment Download reader |
| |
| DOI：10.7606/j.issn.1000-7601.2013.02.23 |
| Key Words: agricultural drainage subsurface drainage reclamation of saline soil economic analysis The Yellow River Delta |
| Author Name | Affiliation | | LIU Wenlong | Northwest Key Laboratories of Water Resources and Environment Ecology, Xi’an University of Technology, Xi’an, Shaanxi 710048, China | | LUO Wan | Northwest Key Laboratories of Water Resources and Environment Ecology, Xi’an University of Technology, Xi’an, Shaanxi 710048, China | | JIA Zhonghua | Northwest Key Laboratories of Water Resources and Environment Ecology, Xi’an University of Technology, Xi’an, Shaanxi 710048, China | | PAN Yanxin | Northwest Key Laboratories of Water Resources and Environment Ecology, Xi’an University of Technology, Xi’an, Shaanxi 710048, China | | YANG Yuzhen | Yellow River Delta Conservation and Research Center, Dongying, Shandong 257091, China | | BU Fanmin | Yellow River Delta Conservation and Research Center, Dongying, Shandong 257091, China |
|
| Hits: 259 |
| Download times: 182 |
| Abstract: |
| Taking the subsurface drainage project in the Yellow River Delta as an example, we conducted financial analysis and investigation of the project performance; we analyzed the economic, ecological and social benefits. The results showed that 297.63 hm2 salinized wasteland was reclaimed into arable land，accounting for 44.6% of the total farmland area in the project area; more than 90% of the subsurface drained land have been desalinized. The subsurface drainage project produced remarkable economic, ecological and social benefits. For cotton production in the study area, the calculated financial net present value (FNPV) was 8099300 yuan for a discount rate of 12%, the dynamic investment pay-back period (PT) was 7.54 years; the Financial Interval Revenue Rate (FIRR) was 21.97%, which is greater than the benchmark yield of 12%. Therefore, it is beneficial to build subsurface drainage systems in the Yellow River Delta. |
|
|
|