干旱区研究2024，Vol.41Issue(6)：951-963,13.DOI:10.13866/j.azr.2024.06.05
2000-2020年阿克苏河流域土地利用强度变化及其对蒸散发的影响
Land use intensity change and its influence on evapotranspiration in Aksu River Basin from 2000 to 2020
摘要
Abstract
It is of great significance for scientific management and efficient utilization of water resources in the basin to deeply explore the information of internal conversion process of land use types,measure the impact of land use change intensity on evapotranspiration,and accurately evaluate the temporal and spatial variation of ET.Based on the intensity analysis model,the intensity change characteristics of land use types at different levels in the Aksu River Basin from 2000 to 2020 and their impact on the actual evapotranspiration of the basin were re-vealed.The results showed that:(1)At the time interval level,the intensity of land use change in the basin in-creased first and then decreased,and the change was the most active from 2000 to 2005.At the land type level,the increase and decrease of cultivated land,construction land,water area and forest land area are more active.The increase of cultivated land area at the transfer level mainly comes from grassland(54.31%)and unused land(26.26%).(2)The average annual evapotranspiration of the basin is 166.56 mm.The interannual fluctuation is large,and the overall trend is increasing,with an annual growth rate of 3.68 mm·a-1.Evapotranspiration from April to October accounted for 71.76%of the annual evapotranspiration.The high value of actual evapotranspira-tion is distributed in mountainous forest land and cultivated land in plain area,and the low value area is distribut-ed in piedmont desert area and oasis and desert transition zone.(3)The results of principal component analysis show that the driving force of ETa change in Aksu River Basin is the conversion intensity of grassland,cultivated land and unused land.The correlation coefficient between land use change intensity and actual evapotranspiration is 0.87,and there is a strong correlation between the two.关键词
土地利用变化/强度分析/实际蒸散发/阿克苏河流域Key words
land use change/strength analysis/actual evapotranspiration/Aksu River Basin引用本文复制引用
姚小晨,高凡,韩方红,何兵..2000-2020年阿克苏河流域土地利用强度变化及其对蒸散发的影响[J].干旱区研究,2024,41(6):951-963,13.基金项目
塔里木河三源流下泄断面至阿拉尔断面区间河段水量损失分析与对策研究(TGJAKSJJG-2022KYXM0003) （TGJAKSJJG-2022KYXM0003）
新疆塔里木河重要源流区(阿克苏河流域)山水林田湖草沙一体化保护和修复工程关键问题和关键技术研究(AKSSSXM2022620) （阿克苏河流域）
2022年研究生"新疆水利工程安全与水灾害防治重点实验室"研究项目(ZDSYS-YJS-2022-23) （ZDSYS-YJS-2022-23）
第三次新疆综合科学考察项目(2021xjkk02003) （2021xjkk02003）
