中国生态农业学报（中英文）2025，Vol.33Issue(7)：1261-1274,14.DOI:10.12357/cjea.20240810
叶尔羌河流域灌区农业发展特征与灌溉效率评估
Agricultural development characteristics and irrigation efficiency evaluation in the Yarkant River Basin irrigation district
摘要
Abstract
Agricultural water constitutes a significant portion of global water resource consumption,particularly in arid regions,where agricultural productivity depends heavily on scarce water supplies.The oasis irrigation district of the Yarkant River Basin,a key agricultural production region in China,faces increasing water scarcity challenges along with intensified competition for water resources.This study systematically investigated the temporal and spatial variations of planted area,irrigation arable area,accumu-lated irrigation area,water diversion amount,and irrigation quota from 2000 to 2021,as well as evapotranspiration(ET)and irriga-tion efficiency from 2000 to 2020,in the oasis irrigation district of the Yarkant River Basin.Utilizing Mann-Kendall trend analysis,Sen's slope estimation,and Pearson correlation analysis,this research analyzed long-term trends based on irrigation data and the Pen-man-Monteith-Leuning Evapotranspiration Version 2(PML-V2)ET dataset.The key findings included the following:1)Although the water diversion amount significantly decreased,river and reservoir water remained the primary source,accounting for 81.0％of water diversion amount.The total planted area and irrigation arable area both showed highly significant increases,whereas changes in the accumulated irrigation area were not significant.The water allocation quota showed a highly significant decreasing trend,where-as the irrigation water quota showed a significant decreasing trend.Cotton and wheat remained the dominant crops,their accumulated irrigation area occupied 37.1％and 21.4％of the total accumulated irrigation area,respectively.The monthly accumulated irrigation area was notably concentrated in summer(from June to September),accounting for 55.2％of the annual accumulated irrigation area and aligned with the period of high river runoff.The correlation between water diversion and river runoff gradually weakened,indic-ating the need for adaptive water resource management strategies during drought periods.2)ET displayed a significant upward trend,particularly in upstream and downstream regions,averaging 401 mm annually of the whole region.Irrigation efficiency exhibited highly significant improvement,rising from 25.1％in 2000 to 43.7％in 2020.Spatially,the ET values were higher in continuously cultivated farmlands,and lower in intermittently cultivated areas.Additionally,validation through water balance analysis confirmed that the PML-V2 ET dataset maintained adequate reliability in this arid region,providing valuable reference data for subsequent eco-hydrological studies.These insights into water resource management practices,crop irrigation patterns,and irrigation efficiency en-hancement will contribute critical knowledge for sustainable agricultural development and resource management strategies in arid ir-rigation districts.关键词
叶尔羌河流域灌区/灌溉农业/灌溉定额/作物蒸散/灌溉效率/PML-V2Key words
Yarkant River Basin irrigation district/irrigated agriculture/irrigation quota/crop evapotranspiration/irrigation effi-ciency/PML-V2分类
农业科技引用本文复制引用
陈召望,韩淑敏,李会龙,袁瑞雪,杨永辉,杨艳敏,王菁,姜勇..叶尔羌河流域灌区农业发展特征与灌溉效率评估[J].中国生态农业学报（中英文）,2025,33(7):1261-1274,14.基金项目
中国科学院战略性先导科技专项(XDA0440405,XDA0440102)资助 This study was supported by the Strategic Priority Research Program of the Chinese Academy of Sciences(XDA0440405,XDA0440102). （XDA0440405,XDA0440102）
