像元尺度上广西西江流域水资源可获取性综合评价
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摘要
研究基于数字高程模型数据,根据影响空间水资源获取的要素,建立像元尺度上水可获取性的评价模型。选取广西西江流域进行实证研究,首先在水文模型的基础上,提取流域的自然水系并进行验证;其次,获取模型的坡度、高差、径流量和取水距离等主要参数;最后,根据水资源可获取性模型,评价流域内任意点的水可获取性难易程度。通过水文模型提取的自然水系与流域实际水系基本吻合;研究水资源可获取性为0. 092 0～3. 961 1,从西北到东南表现为递增的趋势。
Based on the data of digital elevation model and the factors affecting water spatial accessibility, a water accessibility model on pixel scale is developed. The Xijiang River Basin in Guangxi is selected as study case. Firstly, the natural water system of basin is extracted and verified based on hydrological model. Secondly, the main parameters of model are obtained,including slope gradient, altitude, runoff and water withdrawal distance. Finally, the accessibility of water at any point within basin is evaluated according to water accessibility model. The results show that the natural water system extracted based on hydrological model is basically consistent with actual water system, and the accessibility index of water resources is 0. 0920-3. 9611 which appears an increasing trend from northwest to southeast.
Based on the data of digital elevation model and the factors affecting water spatial accessibility, a water accessibility model on pixel scale is developed. The Xijiang River Basin in Guangxi is selected as study case. Firstly, the natural water system of basin is extracted and verified based on hydrological model. Secondly, the main parameters of model are obtained,including slope gradient, altitude, runoff and water withdrawal distance. Finally, the accessibility of water at any point within basin is evaluated according to water accessibility model. The results show that the natural water system extracted based on hydrological model is basically consistent with actual water system, and the accessibility index of water resources is 0. 0920-3. 9611 which appears an increasing trend from northwest to southeast.
引文
[1]郭倩,汪嘉杨,张碧.基于DPSIRM框架的区域水资源承载力综合评价[J].自然资源学报,2017(3):484-493.
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[8] YU Guangming, CHEN Xiaoxu, TU Zhenfa, et al. Modeling wateraccessibility of natural river networks using the fine-grained physicalwatershed characteristics at the grid scale[J]. Water Resource Man-agement,2017,31(7):2271-2284.
[9] MENZEL L, MATOVELLE A. Current state and future developmentof blue water accessibility and blue water DEM and:A view at sevencase studies[J]. Journal of Hydrology,2012,384(3-4):245-263.
[10] TANZEEBA S, GAN T Y. Potential impact of climate change on thewater accessibility of South Saskatchewan River Basin[J]. ClimaticChange,2012,112(2):355-386.
[11]解博,罗明良,杨俊志,等.利用ASTER-GDEM提取川中丘陵区水系[J].测绘科学,2014(3):66-69.
[12]孙崇亮,王卷乐.基于DEM的水系自动提取与分级研究进展[J].地理科学进展,2008(1):118-124.
[13] O'CALLAGHAN J F, MARK D M. The extraction of drainage net-works from digital elevation data[J]. Computer Vision, Graphicsand Image Processing,1984,28(3):323-344.
[14]黄锡荃.水文学[M].北京:高等教育出版社,1993.
[2]高伟,严长安,李金城,等.基于水量-水质耦合过程的流域水生态承载力优化方法与例证[J].环境科学学报,2017(2):755-762.
[3]李平星,樊杰.基于VSD模型的区域生态系统脆弱性评价———以广西西江经济带为例[J].自然资源学报,2014,29(5):779-788.
[4]刘倩倩,陈岩.基于粗糙集和BP神经网络的流域水资源脆弱性预测研究———以淮河流域为例[J].长江流域资源与环境,2016,25(9):1317-1327.
[5]石卫,夏军,李福林,等.山东省流域水资源安全分析[J].武汉大学学报:工学版,2016(6):801-805.
[6]陈成广,李晶晶,滕凯玲,等.基于SWAT模型的绍兴城市径流时空演变规律分析[J].水文,2017(4):29-34.
[7]祖拜代·木依布拉,师庆东,普拉提·莫合塔尔,等.基于SWAT模型的乌鲁木齐河上游土地利用和气候变化对径流的影响[J].生态学报,2018,38(14):1-9.
[8] YU Guangming, CHEN Xiaoxu, TU Zhenfa, et al. Modeling wateraccessibility of natural river networks using the fine-grained physicalwatershed characteristics at the grid scale[J]. Water Resource Man-agement,2017,31(7):2271-2284.
[9] MENZEL L, MATOVELLE A. Current state and future developmentof blue water accessibility and blue water DEM and:A view at sevencase studies[J]. Journal of Hydrology,2012,384(3-4):245-263.
[10] TANZEEBA S, GAN T Y. Potential impact of climate change on thewater accessibility of South Saskatchewan River Basin[J]. ClimaticChange,2012,112(2):355-386.
[11]解博,罗明良,杨俊志,等.利用ASTER-GDEM提取川中丘陵区水系[J].测绘科学,2014(3):66-69.
[12]孙崇亮,王卷乐.基于DEM的水系自动提取与分级研究进展[J].地理科学进展,2008(1):118-124.
[13] O'CALLAGHAN J F, MARK D M. The extraction of drainage net-works from digital elevation data[J]. Computer Vision, Graphicsand Image Processing,1984,28(3):323-344.
[14]黄锡荃.水文学[M].北京:高等教育出版社,1993.