基于ArcGIS和SWAT的山区、平原区复合地貌流域划分方法研究

干旱区地理 ›› 2016, Vol. 39 ›› Issue (2): 413-419.

基于ArcGIS和SWAT的山区、平原区复合地貌流域划分方法研究

吴用¹, 李畅游¹, 张成福², 史小红¹, 赵胜男¹, 林涛涛³

1 内蒙古农业大学水利与土木建筑工程学院, 内蒙古呼和浩特 010018;
2 内蒙古农业大学生态环境学院, 内蒙古呼和浩特 010018;
3 长江水利委员会长江三峡水文水资源勘测局, 湖北宜昌 443000

收稿日期:2015-11-28 修回日期:2016-02-16 出版日期:2016-03-25
通讯作者: 李畅游. Email: nndlichangyou@163.com
作者简介:吴用(1990-), 男, 湖北荆门人, 博士研究生, 主要从事水资源及污染物运移模拟研究. Email: wuyong526@126.com
基金资助:
国家自然科学基金(51339002, 51069007, 51269016)资助

A watershed delineation method for mountains, plains complex landform area based on ArcGIS and SWAT

WU Yong¹, LI Chang-you¹, ZHANG Cheng-fu², SHI Xiao-hong¹, ZHAO Sheng-nan¹, LIN Tao-tao³

1 Water Conservancy and Civil Engineering College, Inner Mongolia Agricultural Universit, Huhhot 010018, Inner Mongolia, China;
2 Ecology and Environmental College, Inner Mongolia Agricultural University, Huhhot 010018, Inner Mongolia, China;
3 Three Gorges Hydrology and Water Resources Survey Bureau, Bureau of Hydrology, Yangtze River Water Conservancy Commission, Yichang 443000, Hubei, China

Received:2015-11-28 Revised:2016-02-16 Online:2016-03-25

摘要/Abstract

摘要： 流域划分是研究区域水量平衡的基础和前提. 山区和大平原区流域划分的技术已较为成熟, 但在山区、平原区复合的复杂地形地貌特征区域, 流域划分方法仍处于探索阶段. 该地区陆面水文循环过程复杂, 地表水和地下水相互补给关系密切, 单以山区流域划分技术平原区流域划分技术无法完整的划分出研究区所在的全流域, 进而导致流域内水文循环体系不完整. 选择典型代表内蒙古河套灌区流域为例, 综合山区山脊线、天然河流和灌域边界来进行流域划分, 提出了采用修正系数处理平原灌区小地形起伏, 依据灌溉排水系统重新划定子流域和结合土地利用图确定山区、平原复合地貌区边界的综合处理技术. 划分结果表明, 研究区河网拟合度高, 水文循环单元符合用水管理特点, 复合地貌区山区流域面积占总流域面积的58.1%. 在以全流域尺度计算区域内水量平衡时, 山区流域面积不能忽略. 该方法的成功应用为灌区流域内的供水用水平衡及农业施肥对下游污染研究提供基础. 同时也为其它具有相似地貌类型的地区流域划分提供思路和参考.

关键词: 流域划分, 山区平原流域, DEM修改, SWAT模型

Abstract: Watershed delineation is the basis for studying the hydrological cycle with the distributed hydrological model. The process of runoff from mountains and plains is very simple; the watershed boundary delineation is based on natural dividing crest, irrigation ditches or administrative boundaries in plain areas. All of the watershed delineation methods in the mountain and plain areas are relatively effective. But in the compound mountain-plain landform areas, surface water cycle process is rather complicated, especially in areas with strong human activity, which are compound artificial-natural hydrological cycle types, the existing watershed delineation technology can not be used to define the whole basin. This paper provides a systematic method to resolve the problem. In the plain area, the DEM is preprocessed with the correction coefficient and is based on the DEM “Burn-in” elevation increment methodologies. In the mountains, the watershed boundary is delineated with D8 algorithms of the module in the SWAT model. Finally, the regional land use map was adopted to complete the whole watershed and sub-basin delineations. In the case of Hetao Irrigation District, Inner Mongolia, China, the delineated watershed boundary is composed of the mountain ridge, the boundary of irrigated lands and a natural river. This method has proved to be correct and feasible. The results show that the river network and drainage channel system are highly fitted with the real objects, the hydrologic cycle is consistent with actual water management units, and the area of watershed in the mountain area account for 58.1% of the total watershed area. It also shows that the division of the whole basin is a precondition for using the distributive hydrological model to study regional water balance. Water from the mountain sub-basins should be a large contributor to the whole basin and the sub-basins in the mountain area cannot be ignored when calculating water balance in the plain area. The watershed delineation method proposed in this paper can be used as a reference in similar topographic regions by using this model. Moreover, high-resolution DEM and detailed land use maps are an effective means to improve watershed delineation precision.

Key words: watershed delineation, mountains valley plain, DEM burn in, SWAT model

中图分类号:

P931.1

吴用, 李畅游, 张成福, 史小红, 赵胜男, 林涛涛. 基于ArcGIS和SWAT的山区、平原区复合地貌流域划分方法研究[J]. 干旱区地理, 2016, 39(2): 413-419.

WU Yong, LI Chang-you, ZHANG Cheng-fu, SHI Xiao-hong, ZHAO Sheng-nan, LIN Tao-tao. A watershed delineation method for mountains, plains complex landform area based on ArcGIS and SWAT[J]. , 2016, 39(2): 413-419.

参考文献

[1] DUKE G D, KIENZLE S W, JOHNSON D L, et al. Improving overland flow routing by incorporating ancillary road data into digital elevation models[J]. Journal of Spatial Hydrology, 2009, 3(2): 1-27.

[2] 顾万龙, 竹磊磊, 许红梅, 等. SWAT模型在气候变化对水资源影响研究中的应用——以河南省中部农业区为例[J]. 生态学杂志, 2010, 29(2): 395-400.[GU Wanlong, ZHU Leilei, XU Hongmei, et al. Application of soil and water assessment tool(SWAT)model in the research of the effects of climate change on water resources: a case study in central agricultural area of Henan Province[J]. Chinese Journal of Ecology, 2010, 29(2): 395-400.]

[3] 王中根, 朱新军, 夏军, 等. 海河流域分布式SWAT模型的构建[J]. 地理科学进展, 2008, 27(4): 1-6.[WANG Zhonggen, ZHU Xinjun, XIA Jun, et al. Study on distributed hydrological model in Hai River Basin[J]. Progress in Geography, 2008, 27(4): 1-6.]

[4] 左俊杰, 蔡永立. 平原河网地区汇水区的划分方法-以上海市为例[J]. 水科学进展, 2011, 22(3): 337-343.[ZUO Junjie, CAI Yongli. An automated watershed delineations approach for plain river network regions: a case study in Shanghai[J]. Advances inWater Science, 2011, 22(3): 337-343．]

[5] 郑捷, 李光永, 韩振中, 等. 改进的SWAT模型在平原灌区的应用[J]. 水利学报, 2011, 42(1): 88-97.[ZHENG Jie, LI Guangyong, HAN Zhenzhong, et al. Application of modified SWAT model in plain irrigation district[J]. Journal of Hydraulic Engineering, 2011, 42(1): 88-97.]

[6] 顾润源, 武荣盛, 吴菊秀, 等. 内蒙古半干旱草原下垫面地表辐射特征[J]. 干旱区地理, 2013, 36(5): 854-864.[GU Runyuan, WU Rongsheng, WU Juxiu, et al. Surface radiation characteristics on semi-arid grassland in Inner Mongolia[J]. Arid Land Geography, 2013, 36(5): 854-864.]

[7] 雷晓辉, 周祖昊, 丁相毅, 等. 分布式水文模型子流域划分中界河、海岸线的处理[J]. 水文, 2009, 29(6): 1-5.[LEI Xiaohui, ZHOU Zuhao, DING Xiangyi, et al. How to process boundary rivers and coastline in watershed subdivision of distributed hydrologicalmodel[J]. Journal of China Hydrology, 2009, 29(6): 1-5.]

[8] Hydrolk[EB/OL], http: //edcdaac.usgs.gov/gtopo30/hydro/

[9] LIU Jiyuan, LIU Mingliang, ZHUANG Dafang, et al. Study on spatial pattern of land-use change in China during 1995-2000[J]. Science in China(D), 2003, 46(4): 373-384.

[10] WILLIAN K S, DAVID R M. A GIS assessment of non-pointsource pollution in the San Antonio Nueces Coastal Basin[R].Austin: Center for Research in Water Resources, The University of Texas, 1996.

[11] 赵勇, 张金萍, 裴源生. 宁夏平原区分布式水循环模拟研究[J].水利学报, 2007, 38(4): 498-505.[ZHAO Yong, ZHANG Jinping, PEI Yuansheng. Distributed water cycle simulation for plain area in Ningxia autonomous region[J]. Journal of hydraulic engineering, 2007, 38(4): 498-505.]

[12] 代俊峰, 崔元来. 基于SWAT 的灌区分布式水文模型-I. 模型构建的原理与方法[J]. 水利学报, 2009, 40(2): 145-152.[DAI Junfeng, CUI Yuanlai. Distributed hydrological model for irrigation area based on SWAT I. Principle and method[J]. Journal of Hydraulic Engineering, 2009, 40(2): 145-152.]

[13] 张银辉, 罗毅, 刘纪远, 等. 灌区土地利用变化驱动因素分析-以内蒙古河套灌区为例[J]. 资源科学, 2006, 28(1): 81-86.[ZHANG Yinhui, LUO Yi, LIU Jiyuan, et al. Driving forces of land use changes in irrigated agriculture[J]. Resources Science, 2006, 28(1): 81-86.]

[14] 李亮, 史海滨, 贾锦凤, 等. 内蒙古河套灌区荒地水盐运移规律模[J]. 2010, 26(1): 31-35.[Li Liang, Shi Haibin, Jia Jinfeng, et al. Simulation of water and salt transport of uncultivated land in Hetao Irrigation District in Inner Mongolia[J]．Transactions of the Chinese Society of Agricultural Engineering, 2010, 26(1): 31-35.]

[15] 陆志翔, 蔡晓慧, 邹松兵, 等. SWAT 模型在伊犁河上游缺资料区的应用[J]. 干旱区地理, 2012, 35(3): 399-407.[LU Zhixiang, CAI Xiaohui, ZOU Songbing, et al. Application of SWAT model in the upstream of Ili River Basin with Scarce Data[J].Arid Land Geography, 2012, 35(3): 399-407.]

[16] 李硕, 赖正清, 王桥, 等. 基于SWAT模型的平原河网区水文过程分布式模拟[J]. 农业工程学报, 2013, 29(6): 106-112.[LI Shuo, LAI Zhengqing, WANG Qiao, et al. Distributed simulation for hydrological process in plain river network region using SWAT model[J]. Transactions of the Chinese Society of Agricultural Engineering, 2013, 29(6): 106-112.]

[17] 黄涛, 雷玉平, 郑力. 山前平原地下水侧向补给潜力空间变异模拟[J]. 水资源保护, 2006, 22(4): 16-19.[HUANG Tao, LEI Yuping, ZHENG Li. Spatial variation simulation of lateral recharge potential of groundwater in piedmont regions[J]. Water Resources Protection, 2006, 22(4): 16-19.]

[18] 刘丽梅, 赵景峰, 张建平, 等. 近50 a 博斯腾湖逐年水量收支估算与水平衡分析[J]. 干旱区地理, 2013, 36(1): 33-40.[LIU Limei, ZHAO Jingfeng, ZHANG Jianping et al. Water balance of Lake Bosten using annual water-budgets method for the past 50 years[J]. Arid Land Geography, 2013, 36(1): 33-40.]