摘要
探究东江流域内主要生态系统近50年蒸散与土壤水变化特征及其影响机制,为合理实施干湿季水资源配置提供依据,从而更好地发挥生态系统的水资源功能。通过建立SWAT模型模拟数据,分析干季、湿季和全年3个时间尺度下蒸散和土壤水变化特征。采用Mann-Kendall检验等方法,结合气象要素分析主要生态系统蒸散与土壤水变化特征与影响机制。东江流域在近50年间主要生态系统蒸散量总体呈现减少趋势,而土壤水量呈增加趋势,时间分布上表现为湿季>干季,空间分布表现为乔木林地>其他林地>水田>草地>旱地;东江流域蒸散和土壤变化没有明显的相互作用关系,二者变化主要受降水、温度和相对湿度影响。
To explore the evapotranspiration and soil water change characteristics and influencing mechanisms of major ecosystems in Dongjiang River basin in recent 50 years,and provide basis for rat ional allocation of water resources in wet and dry seasons,so as to better play the water resources function of ecosystems.The characteristics of evapotranspiration and soil water change in dry season,wet season and whole year were analyzed by establishing SWAT model simulation data.Mann-Kendall test and other methods were used to analyze the tradeoff and influence mechanism between evapot ranspiration and soil water in major ecosystems combined with meteorological elements.In the past 50 years,the evapot ranspiration of major ecosystems in Dongjiang River basin showed a decreasing trend,while the soil water volume showed an increasing trend.The temporal distribution was wet season>dry season,and the spatial distribution was FRSE>FRST>AGRL>RNGE>AGRC.There is no obvious interaction bet ween evapotranspiration and soil water in Dongjiang River basin,and the changes of both are mainly affected by precipitation,temperature and relative humidity.Therefore,on the basis of carefully examining the reasonableness of the water withdrawal scale of the Dongjiang River basin water resources allocation project,the conformity review of water resources control indicators in the feasibility study stage should be carried out,timely monitoring of water resources to adjust reservoir storage status,and strengthening water resources monitoring and early warning.
作者
邱欣彤
臧传富
QIU Xintong;ZANG Chuanfu(School of Geography Science,Nanjing Normal University,Nanjing 210023,China;Key Laboratory of Virtual Geographic Emvironment(Nanjing Normal University),Ministry of Education,Nanjing 210023,China;State Key Laboratory Cultiration Base of Geogra phical Enviromment Ewolution(Jiangsu Province),Nanjing 210023,China;Jiangsu Center for Collaborutire Inmoution in Geographical Information Resource Development and Application,Nanjing 210023,China;School of Geogra phy,South China Normnal University,Guangzhou 510660,China)
出处
《南水北调与水利科技（中英文）》
CAS
CSCD
北大核心
2024年第S01期105-116,共12页
South-to-North Water Transfers and Water Science & Technology
基金
国家自然科学基金(42471026,42361144001)
深圳科技支撑项目(KCXFZ20201221173601003)
广州市生态园林科技协同创新中心(202206010058)
广东省林业科技创新项目(2021-KJCX-003)
林业生态监测网络建设平台(2021-KYXM-09-001)。
关键词
生态系统
蒸散量
土壤水
趋势分析
东江流域
SWAT模型
typical ecosystem
evapotranspiration
soil water
trend analysis
Dongjiang River basin
SWAT model
