南疆典型灌区水资源可持续利用评价及障碍因子分析OA

To investigate the current status of water resources sustainable utilization and its influencing factors in typical irrigation districts in Southern Xinjiang,the Qianjin Irrigation District,Xiaohaizi Irri-gation District and Kashi Irrigation District of the Third Division were selected as the research areas.Based on the "Driving-Pressure-State-Impact-Response"(DPSIR)model,an evaluation index system for water resources sustainable utilization in irrigation areas was established.The weights of each evaluation of the resource sustainable utilization status in beneficiary farms within the areas from 2013 to 2023 was performed using the TOPSIS model.Additionally,an obstacle degree model was employed to identify critical factors hindering sustainable development.The result indicates that in the Qianjin Ir-rigation District,the water resource sustatinability levels of the 45,46 and 48 Regiments and Yecheng Second Pasture,have been consistently in a state of relatively good sustainable utilization,respectively,over the years.In Xiaohaizi Irrigation District,the sustainable utilization level of water re-sources of 44,49 and 50 Regiments have been consistently in a state of relatively good sustainable uti-lization.Meanwhile,the 51 and 53 Regiments are in a better sustainable utilization level from 2013 to 2016,but reduced to a basic sustainable level from 2017 to 2021.In Kashi Irrigation District,the sus-tainable utilization level of waterresourcesof41 Regimentshasbeen predominantlyin the state of weak sustainable utilization all the year round.The sustainable utilization level of water resources of 42 Regi-ments and Gashi General Farm is in the state of basic sustainable utilization all the year round.The sustainable utilization level of water resources of Hongqi Farm,Dongfeng Farm and Toyun Ranch is the poorest.Using the obstacle degree model,the main obstacle factors affecting the beneficiary farms in the irrigation area are the amount of groundwater supply volume,the effective irrigation area,the ratio of the tertiary industry to the GDP,the area of soil and water erosion control,and the area of water-saving irrigation.