朱溪小流域土地利用/覆盖变化水文响应分析  

Impact of Land Use and Land Cover Change on Runoff Characteristics in Zhuxi Watershed

作　　者：周伟东[1] 汪小钦[1] 朱雄斌 ZHOU Wei-dong;WANG Xiao-qin;ZHU Xiong-bin(Key Laboratory of Spatial Data Mining and Information Sharing of Ministry of Education,National&Local Joint Engineering Research Center of Satellite Geospatial Information Technology,Fuzhou University,Fuzhou,Fujian 350116)

机构地区：[1]福州大学空间数据挖掘与信息共享教育部重点实验室,卫星空间信息技术综合应用国家地方联合工程研究中心,福建福州350116

出　　处：《安徽农业科学》2020年第10期58-61,共4页Journal of Anhui Agricultural Sciences

基　　金：国家科技支撑计划课题“南方红壤水土流失综合监测”(2013BAC08B01);福建省高校产学研重点项目“集成多重时空分辨率的县域水土流失遥感协同监测”(2017Y4010);中央引导地方科技发展专项“遥感数据处理分析技术与卫星综合应用”(2017L3012)。

摘　　要：定量模拟土地利用/覆盖对流域径流的影响,对于揭示水文循环规律和水土流失治理等具有重要意义。以福建省长汀县朱溪小流域为研究区域,在2011年土地利用/覆盖(S 0)基础上,设置林地S 1、耕地S 2、园地S 3和退耕还林S 4共4种土地利用/覆盖情景。利用SWAT模型,定量模拟朱溪小流域月平均径流在不同土地利用/覆盖情景下的变化情况。研究表明,不同情景下朱溪小流域月平均径流量的变化规律一致,但变化幅度不同,径流量从大到小依次为S 2、S 0、S 3、S 4、S 1。说明在现有土地利用/覆盖条件下,大量开垦耕地将使径流量大幅度增加,增加林地的面积能有效地减少径流量。径流量大小主要由降雨量决定,土地利用/覆盖对其起调节作用。在不改变土地利用/覆盖基本格局的前提下,退耕还林是最为可行的径流量减少方案。It is of great significance to quantitatively simulate land use and land cover impact on runoff in river basin for hydrological cycle and soil erosion control.This article took Zhuxi Watershed as the study area,which locates in Changting County of Fujian Province.Four scenarios based on land use and land cover status(S 0)in 2011,namely forest scenario(S 1),cultivated land scenario(S 2),garden plot scenario(S 3)and reforestation of arable land scenario(S 4)were set up.Average monthly runoffs of Zhuxi watershed were simulated quantitatively using SWAT model.Results showed that variation trends of average monthly runoffs with time were consistent under different scenarios.Variation amplitudes of runoffs were different under different scenarios and the scenario order of variation amplitudes from big to small was S 2,S 0,S 3,S 4,S 1.Runoffs would greatly increase with increase in arable land,while effectively decrease with increase of forest area.Runoff is mainly determined by precipitation,while land use and land cover has a regulating effect on it.The forestation of arable land scenario is the most feasible way to reduce runoff without changing the basic land use and land cover pattern.

关 键 词：SWAT模型 水文响应 径流量 土地利用/覆盖 长汀县 朱溪小流域 

分 类 号：TP79[自动化与计算机技术—检测技术与自动化装置]