Research on improvement of comprehensive function of urban stock irrigation channels in eastern Xinjiang based on climate adaptation:Taking Xinxing City in Hami as an example
Eastern Xinjiang refers to the eastern part of Xinjiang,which belongs to the temperate continental arid climate.The irrigation channels with agricultural indoctrination water as the leading function is an important part of the surface water system in the arid area of eastern Xinjiang.In recent years,under the guidance of The Belt and Road Initiative,some towns in eastern Xinjiang have carried out functional transformation and land expansion,and a large number of irrigation channels originally in the suburbs have been gradually incorporated into urban land.As a scarce local surface water resource,it is extremely necessary to transform and utilize it to improve the quality of living environment.How to improve the climate adaptability of water system and strengthen its multi-functional utilization is the key to the transformation and utilization of irrigation channels in arid areas.There are many theories or practices on climate adaptation and water system function improvement.In terms of climate adaptation,the research focuses on the relationship between architecture and climate,and discusses how to adapt to dry,windy and hot climates from the aspects of layout,building space and materials.In order to cope with drought and water shortage,the application of water-saving technology,improvement of water-saving awareness,diversification of water resources utilization and water resources management are emphasized.In the improvement and utilization of water system in arid areas,more attention is paid to the construction of river system landscape,ecological restoration and urban characteristics.In terms of the transformation and utilization of irrigation canal system,it mainly explores from the aspects of irrigation canal regulation,landscape enhancement and utilization,and conservation and utilization of water conservancy heritage.On the whole,the research on how to adapt the irrigation system to the arid climate and systematically improve the comprehensive service function is still relatively weak.This paper takes the existing irrigation canal in eastern Xinjiang as the research object,combined with literature analysis and field investigation,to explore the path to improve its comprehensive service function.The characteristics of traditional irrigation channels in eastern Xinjiang under the influence of climate are summarized:irrigation canal network system,which is an important component of the surface water system in eastern Xinjiang,above-ground integrated irrigation network adapted to the climate in eastern Xinjiang,reservoir which integrates temperature control,water storage and hydrophilic leisure functions.Combined with the functional transformation needs of modern oasis towns,the paper analyzes three difficulties in promoting the transformation and utilization of urban construction land storage irrigation channels:the contradiction between the surge of water demand and drought and shortage caused by changes in water structure and water consumption,the contradiction between the transformation of service function and the spatial form of storage canal network,and the contradiction between the improvement of comprehensive service function and local climate constraints.In order to adapt to local climatic characteristics such as drought,water shortage and intense evaporation,and meet the needs of functional transformation of modern oasis cities and high-quality human settlement environment construction,this paper introduces the theory of intensive utilization of water resources,and puts forward a water system improvement utilization mode based on climate adaptation,guided by water conservation and water efficiency improvement,which includes three aspects of transformation and utilization strategies.The first is to create a multi-functional water system to meet the needs of transformation,and give full play to the value of limited water resources.Including combining the diversified utilization of urban functions to enhance waterfront service functions,using water resources characteristics to adjust urban microclimate,cultural and landscape integration,to create the characteristics of east Xinjiang oasis city.The second is to build an intelligent water network based on climate characteristics and adopt a composite water use model based on functional transformation,smart water diversion model to cope with high local evaporation,and precise water use patterns adapted to the local climate.The third is the regionally-appropriate water-saving technology to ensure water demand,improve the efficiency of water resources utilization,and promote the cost-effective and sustainable operation of water systems.Combining with the optimization construction project of water system in the downtown area of Xinxing City,the three strategies of transformation and utilization are applied to practice.The project is under implementation and construction.At present,the local ecological environment and spatial quality around the water system of central Xinxing City have been improved to a certain extent,and the comprehensive service ability to cope with the transformation of urban functions and the needs of citizens has been greatly improved.The strategy proposed in this study can be used for reference for the transformation and utilization of the existing irrigation channels in the oasis towns in eastern Xinjiang and other arid areas.
climate adaptationoasis townstock irrigation canalcomprehensive functionintensive use
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