Measuring benefits to operation and maintenance expenditure in the canal irrigation system of Pakistan: A simulation analysis
利用分布式滞后模型估算巴基斯坦旁遮普省运河系统运维投资对农业生产力的贡献，并模拟不同投资情景对农业产出、价格和收入的影响，发现运维投资对生产者和消费者均有显著收益。
Estimates regarding benefits to O&M investments help rationalize financial allocation decisions. A distributed lag model is used to estimate the contribution to agricultural productivity of funds utilized for O&M of the canal system in Pakistani Punjab. Estimated parameters are used to simulate the effects of alternative O&M investment scenarios on agricultural output, farm prices and income. Marginal benefits to past and prospective O&M investments in the canal irrigation system were found to be fairly high, suggesting the need to allocate more funds for O&M of the canal system. Results indicate that O&M investments yield substantial gains to both producers and consumers, implying that funds required for O&M activities could be generated by taxing both these segments of society.