基于GIS的区域潜水蒸发计算
|
摘要
潜水蒸发受气象、土壤、地下水埋深以及土地利用(作物种类)多种因素的影响,计算区域潜水蒸发量时应考虑这些因素具有空间变异性。考虑灌区土地利用、土壤类型和地下水埋深等因素对潜水蒸发量影响,提出一种基于GIS的区域潜水蒸发计算方法(GREGEC),并在ArcGIS10.0中利用其内置的VBA环境完成Arcobjects编程计算。在河南省柳园口灌区的应用表明,GREGEC计算的多年平均潜水蒸发量与水量平衡法的计算结果误差为2%;与灌区地下水模型所得结果的空间分布比较一致,但逐月潜水蒸发量变化规律更合理。GREGEC方法能有效提高区域潜水蒸发量计算精度,且方便编程实现,将传统点尺度的潜水蒸发量计算提升到灌区尺度。
Groundwater evapotranspiration is affected by metrological conditions, soil type, groundwater depth and land use(crop variety),and the spatial variability of all these factors should be taken into consideration. A GIS- based regional groundwater evapotranspiration calculation(GREGEC) method was proposed and implemented by programming ArcObjects with VBA in the environment of ArcGIS 10.0. The method was applied to calculate regional groundwater evapotranspiration in Liuyuankou Irrigation System and the outputs were compared with the methods of water balance and groundwater modeling. The results show that compared with the water balance method,the error in annual groundwater evapotranspiration is about 2%;the spatial distribution patterns of groundwater evapotranspiration from the GREGEC and the groundwater modeling method are similar,while the monthly groundwater evapotranspiration from GREGEC is more reasonable. The GREGEC method can improve the estimation accuracy and it was convenient to be implemented by programming,which is helpful for upscaling groundwater evaporation from the traditional point scale to the regional scale.
Groundwater evapotranspiration is affected by metrological conditions, soil type, groundwater depth and land use(crop variety),and the spatial variability of all these factors should be taken into consideration. A GIS- based regional groundwater evapotranspiration calculation(GREGEC) method was proposed and implemented by programming ArcObjects with VBA in the environment of ArcGIS 10.0. The method was applied to calculate regional groundwater evapotranspiration in Liuyuankou Irrigation System and the outputs were compared with the methods of water balance and groundwater modeling. The results show that compared with the water balance method,the error in annual groundwater evapotranspiration is about 2%;the spatial distribution patterns of groundwater evapotranspiration from the GREGEC and the groundwater modeling method are similar,while the monthly groundwater evapotranspiration from GREGEC is more reasonable. The GREGEC method can improve the estimation accuracy and it was convenient to be implemented by programming,which is helpful for upscaling groundwater evaporation from the traditional point scale to the regional scale.
引文
[1]雷志栋,胡和平,杨诗秀,等.塔里木盆地绿洲耗水分析[J].水利学报,2006,37(12):1470-1475.
[2]Yeh P J F,Famiglietti J S.Regional groundwater evapotranspiration in Illinois[J].Journal of Hydrometeorology,2009,10(2):464-478.
[3]潘登,任理,刘钰.应用分布式水文模型优化黑龙港及运东平原农田灌溉制度Ⅰ:模型参数的率定验证[J].水利学报,2012,43(6):717-725.
[4]刘路广,崔远来.灌区地表水-地下水耦合模型的构建[J].水利学报,2013,43(7):826-833.
[5]刘廷玺,朱仲元,王清宇.泛克立格法在研究潜水极限蒸发埋深Δ0的空间变异性及其预测中的应用[J].灌溉排水,1994(3):31-35.
[6]Tyler SW,Kranz S,Parlange MB,et al.Estimation of groundwater evaporation and salt flux from Owens Lake,California,USA[J].Journal of Hydrology,1997,200(1-4):110-135.
[7]岳卫峰,杨金忠,高鸿永,等.内蒙河套灌区义长灌域水均衡分析[J].灌溉排水学报,2004,23(6):25-28.
[8]胡和平,李民,杨诗秀,等.用直接估算法确定区域潜水蒸发量[J].灌溉排水,1999,18(2):22-25.
[9]尚松浩,毛晓敏.潜水蒸发研究进展[J].水利水电科技进展,2010,30(4):85-94.
[10]王景才,夏自强,彭兆然,等.淮北平原汉王实验站土壤水资源特征试验研究[J].排灌机械工程学报,2012,30(3):362-367.
[11]朱秀珍,崔远来,李远华,等.豫东平原潜水蒸发试验研究[J].中国农村水利水电,2002,3:1-2.
[12]罗玉峰.灌区尺度潜水蒸发有效性调控[M].南京:河海大学出版社,2012.
[13]Chang K.基于VBA的Arcobjects编程:面向任务的方法[M].北京:科学出版社,2010.
[14]罗玉峰.灌区水量平衡模型及其应用研究[D].武汉:武汉大学,2006.
[15]罗玉峰,毛怡雷,彭世彰,等.作物生长条件下的阿维里扬诺夫潜水蒸发公式改进[J].农业工程学报,2013,29(4):108-110.
[16]Luo Y F,Khan S,Peng S Z,et al.Effects of the discretisation cell size on the output uncertainty of regional groundwater evapotranspiration modelling[J].Mathematical and Computer Modelling,2012,56:1-13.
[17]Chiang W H,Kinzelbach W.3D-groundwater modeling with PMWIN:a simulation system for modeling groundwater flow and transport processes[M].Berlin:Springer,2005.
[2]Yeh P J F,Famiglietti J S.Regional groundwater evapotranspiration in Illinois[J].Journal of Hydrometeorology,2009,10(2):464-478.
[3]潘登,任理,刘钰.应用分布式水文模型优化黑龙港及运东平原农田灌溉制度Ⅰ:模型参数的率定验证[J].水利学报,2012,43(6):717-725.
[4]刘路广,崔远来.灌区地表水-地下水耦合模型的构建[J].水利学报,2013,43(7):826-833.
[5]刘廷玺,朱仲元,王清宇.泛克立格法在研究潜水极限蒸发埋深Δ0的空间变异性及其预测中的应用[J].灌溉排水,1994(3):31-35.
[6]Tyler SW,Kranz S,Parlange MB,et al.Estimation of groundwater evaporation and salt flux from Owens Lake,California,USA[J].Journal of Hydrology,1997,200(1-4):110-135.
[7]岳卫峰,杨金忠,高鸿永,等.内蒙河套灌区义长灌域水均衡分析[J].灌溉排水学报,2004,23(6):25-28.
[8]胡和平,李民,杨诗秀,等.用直接估算法确定区域潜水蒸发量[J].灌溉排水,1999,18(2):22-25.
[9]尚松浩,毛晓敏.潜水蒸发研究进展[J].水利水电科技进展,2010,30(4):85-94.
[10]王景才,夏自强,彭兆然,等.淮北平原汉王实验站土壤水资源特征试验研究[J].排灌机械工程学报,2012,30(3):362-367.
[11]朱秀珍,崔远来,李远华,等.豫东平原潜水蒸发试验研究[J].中国农村水利水电,2002,3:1-2.
[12]罗玉峰.灌区尺度潜水蒸发有效性调控[M].南京:河海大学出版社,2012.
[13]Chang K.基于VBA的Arcobjects编程:面向任务的方法[M].北京:科学出版社,2010.
[14]罗玉峰.灌区水量平衡模型及其应用研究[D].武汉:武汉大学,2006.
[15]罗玉峰,毛怡雷,彭世彰,等.作物生长条件下的阿维里扬诺夫潜水蒸发公式改进[J].农业工程学报,2013,29(4):108-110.
[16]Luo Y F,Khan S,Peng S Z,et al.Effects of the discretisation cell size on the output uncertainty of regional groundwater evapotranspiration modelling[J].Mathematical and Computer Modelling,2012,56:1-13.
[17]Chiang W H,Kinzelbach W.3D-groundwater modeling with PMWIN:a simulation system for modeling groundwater flow and transport processes[M].Berlin:Springer,2005.