基于HRU的抚河上游地表径流对土地利用变化响应特征  

Study on the Response Characteristics of Surface Runoff to Land Use Change in the Upper Fu River on HRU

作　　者：黄嘉伟 黄宏胜[1,2] 张浩填 卢鑫 HUANG Jiawei;HUANG Hongsheng;ZHANG Haotian;LU Xin(College of Land Resources and Environment,Jiangxi Agricultural University,Nanchang 330045,China;Key laboratory of Poyang Lake Watershed Agricultural Resources and Ecology of Jiangxi Province,Nanchang 330045,China)

机构地区：[1]江西农业大学国土资源与环境学院,江西南昌330045 [2]江西省鄱阳湖流域农业资源与生态重点实验室,江西南昌330045

出　　处：《水文》2024年第6期38-43,50,共7页Journal of China Hydrology

基　　金：国家自然科学基金资助项目(42161073);抚州市“揭榜挂帅”项目(2022JDA07)。

摘　　要：为定量分析抚河上游地表径流对土地利用变化响应特征,以2005—2019年实测径流数据、气象数据和土地利用数据为基础构建SWAT模型,在HRU(水文响应单元)尺度分析地表径流对土地利用变化的响应规律。研究表明:(1)SWAT模型在抚河上游有较好的适用性;(2)2005—2019年抚河上游土地利用主要类型为林地和耕地,而建设用地扩张速度最快;(3)抚河上游土地日益细碎化,主要是林地和建设用地的面状扩张造成耕地破碎导致HRU数量增加;(4)抚河上游流域月地表径流系数与降雨量呈正相关,全年呈现先增加后下降趋势,由于耕地面积的减少和建设用地的扩张,抚河上游地表径流呈增加趋势;(5)2005—2019年4期土地利用现状下,不同土地利用类型的地表径流大小次序为建设用地>耕地>林地。In order to quantitatively analyze the response characteristics of surface runoff to land use change,based on the measured runoff data,weather data and land use data of the upper Fu River from 2005 to 2019,this study constructed SWAT model to analyse the response pattern of surface runoff to land use change at the HRU scale.The results were summarized as follows:(1)The SWAT model has good applicability in the Fu River.(2)The main types of land use in the upper Fu River from 2005 to 2019 are forest land and cultivated land,while construction land expanded at the fastest rate.(3)Increased fragmentation of land in the upper Fu River is primarily attributed to the fragmentation of cultivated land caused by the expansion of forest land and construction land,resulting in a rise in the number of hydrological response units.(4)Monthly surface runoff coefficients in the upper Fu River are positively correlated with precipitation,showing an increasing and then decreasing trend throughout the year.As a result of the reduction in cultivated land and the increase in construction land,the surface runoff in the upper Fu River shows an increasing trend.(5)The order of surface runoff of land use status from 2005 to 2019 of different land use types is construction land>cultivated land>forest land.

关 键 词：抚河上游 HRU 地表径流 土地利用变化 SWAT模型 

分 类 号：P333[天文地球—水文科学]