渭河上游流域径流对土地利用变化的时空响应  

Spatiotemporal Responses of Runoff to Land Usage Change in the Upper Reaches of Weihe River Basin

作　　者：王维 鞠琴[1,2] 王乐扬 吴佳杰[1,2] 次旦多杰 郝振纯 WANG Wei;JU Qin;WANG Yueyang;WU Jiajie;CIDAN Duo-jie;HAO Zhenchun(State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering,Hohai University,Nanjing 210098,Jiangsu,China;Joint International Research Laboratory of Global Change and Water Cycle,Nanjing 210098,Jiangsu,China;PowerChina Jiangxi Electric Power Design Institute Co.,Ltd.,Nanchang 330096,Jiangxi,China;College of Geographical Sciences,Nanjing University of Information Science and Technology,Nanjing 210044,Jiangsu,China;Linzhi Branch of the Tibet Autonomous Region Hydrology Bureau,Linzhi 860000,Tibet,China)

机构地区：[1]河海大学水文水资源与水利工程科学国家重点实验室,江苏南京210098 [2]河海大学全球变化与水循环国际合作联合实验室,江苏南京210098 [3]中国电建集团江西省电力设计院有限公司,江西南昌330096 [4]南京信息工程大学地理科学学院,江苏南京210044 [5]西藏水文水资源勘测局林芝水文水资源分局,西藏林芝860000

出　　处：《水力发电》2021年第9期41-45,93,共6页Water Power

基　　金：国家重点研发计划项目(2018YFC1508001);中国气象局干旱气象科学研究基金(IAM201901);国家重点实验室专项经费(20195018812)。

摘　　要：以渭河林家村站上游流域为研究区,统计其土地利用情况,并分析流域土地利用和其径流量的相关性。利用1961年~2015年的逐日流量资料,结合研究区7期遥感影像,分析了渭河上游流域多年土地利用变化趋势,使用年均流量和年连续最大7、30、90 d流量代表其径流量特征,分析其变化趋势。结果表明,研究区耕地和林地呈先增加后减少趋势,草地和水域呈先减少后增加趋势,城乡工矿业居民用地呈增加趋势,未利用土地变化趋势不明显;研究区每年各流量变化不稳定,但其5 a滑动平均值(1963年~2013年)以先减小后增大为总体趋势,最低点在1995年附近。各流量与土地利用变化存在一定相关关系,且草地与流域径流量的相关性最强。Taking the upstream basin of Linjiacun Hydrological Station of Weihe River as the study area,the land usage is counted,and the correlation between the land usage and runoff is analyzed.Based on the daily flow data from 1961 to 2015,combined with 7 periods of remote sensing images in the study area,the multi-year land usage change trend in the upper reaches of Weihe River is analyzed.Using average annual flow and annual maximum flow of 7-day,30-day and 90-day as the representative of its runoff characteristics,the change trend is analyzed.The results show that the cultivated and forested land in the study area shows a first decreasing and then increasing trend,the grassland and water area show an first increasing and then decreasing trend,the used industrial and residential land show an decreasing trend and the change trend of unused land types are not monotonous.The annual flow rate changes in the study area are unstable,but its 5-year moving average(1983-2013)shows a general trend of first decreasing and then increasing,and the lowest point is in 1995.It also shows that there is a certain correlation between each flow and land usage change,and the correlation between grassland and runoff is the strongest.

关 键 词：土地利用 径流量 相关性分析 转移矩阵 渭河流域 

分 类 号：P333.1[天文地球—水文科学]