|Author:||Chen, HaoRui ; Huang, JieSheng ; Wu, JingWei ; Yang,JinZhong|
|Book Group Author:||NA|
The current research of scale effect of irrigation water use efficiency was mainly focused at irrigation schemes with surface water resources, and less involved with groundwater irrigation. Based on the water accounting method developed by the International Water Management Institute (IWMI), a general framework for analysing the variability in irrigation water use efficiency indices across scales in well-canal combined irrigation was investigated with return water utilization index, taking the Shijin irrigation scheme in Hebei province (China) as an example. In the framework, assessment indices developed by the IWMI were explored to access irrigation water use efficiency, and five scales (irrigation scheme, main canal, branch main canal, branch canal and field scale) were selected according to the management mode of most irrigation areas in China. Data required for water accounting at those scales were mainly obtained from the Shijing irrigation area scheme management agency as well as observation experimentation. Generally speaking, five key aspects of scale effect research of irrigation water use efficiency assessment indices, including assessment indices selection, scale division, water accounting, data collection and return water analysis, were determined in the research, which could provide some references and experiences to the study on the scale effect of water saving in well-canal combined irrigation area in North China.
|Pages:||1 - 7|
|Journal:||Transactions of the Chinese Society of Agricultural Engineering|
indicators, irrigation, irrigation systems, irrigationwater, water conservation, water management, water use efficiency,China, Hebei, East Asia, Asia, Developing Countries, Northern China,China, water resource management, watering, Soil Water Management(Irrigation and Drainage) (JJ800) (Revised June 2002) [formerly SoilWater Management], Erosion; Soil and Water Conservation (PP400)