摘要
汉江流域作为南水北调中线工程重要水源涵养地,统筹调控水资源量有助于推动汉江流域水资源保护和汉江经济带发展。基于SWAT模型,采用Mann-Kendall(M-K)检验等数理统计方法,模拟分析汉江流域1985—2019年降水量、气温、蓝绿水资源变化及其对气候变异和土地利用变化的响应。结果表明:近35 a来,汉江流域多年平均绿水资源量约为多年平均蓝水资源量的1.74倍。全流域蓝水资源和绿水资源均呈现出不显著的增加趋势;在空间上,蓝绿水资源总体分布特征均呈现出由西部、北部向东南逐渐增加的趋势。流域内蓝绿水资源量变化同时受气候及土地利用的影响,气候变化是主要因素,土地利用变化的影响则较小。
Hanjiang River basin is an important water-supporting area of the middle route project of South-North Water Transfer.The coordinative regulation of water resources in the Hanjiang River basin is conducive to promoting water resources protection and development of the Hanjiang River economic belt.We simulate and analyze the changes in precipitation,temperature,blue and green water resources and their responses to climate variability and land use changes in the Hanjiang River basin from 1985 to 2019 using the SWAT(Soil and Water Assessment Tool)model and mathematical and statistical methods such as the Mann-Kendall(M-K)test.Results elucidate that in the past 35 years,the multi-year average green water resource in the Hanjiang River basin is about 1.74 times higher than the multi-year average blue water resource.Spatially,both blue and green water resources show a trend of gradual increase from the west and north to the southeast.Changes in blue and green water resources in the basin are influenced by both climate and land use,with climate change being the main factor and land use changes being less influential.
作者
宋慧玲
陈述
敖源鸿
SONG Hui-ling;CHEN Shu;AO Yuan-hong(Hubei Provincial Key Lab of Basin Water Resources and Eco-environmental Sciences,Changjiang River Scientific Research Institute,Wuhan 430010,China;College of Hydrology and Water Resources,Hohai University,Nanjing 210098,China;Water Conservancy Authority of Chongqing Municipality,Chongqing 400015,China)
出处
《长江科学院院报》
CSCD
北大核心
2023年第4期24-30,共7页
Journal of Changjiang River Scientific Research Institute
基金
国家自然科学基金联合基金项目(U2040212)。
关键词
蓝水资源量
绿水资源量
SWAT模型
气候变化
土地利用变化
汉江流域
blue water resource
green water resource
SWAT(Soil and Water Assessment Tool)model
climate change
land use change
Hanjiang River
