A Comparison of Streamflow and Baseflow Responses to Land-Use Change and the Variation in Climate Parameters Using SWAT
A Comparison of Streamflow and Baseflow Responses to Land-Use Change and the Variation in Climate Parameters Using SWAT
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DOI：
10.3390/w12010191
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发表时间：
2020-01-01
期刊：
影响因子：
3.4
通讯作者：
Engel, Bernard A.
中科院分区：
文献类型：
--
作者：
Aboelnour, Mohamed;Gitau, Margaret W.;Engel, Bernard A.
土地利用的改变和气候变化是影响流域水文的主要变量。描述气候变化和土地用途改变对水资源的影响对于流域管理至关重要。因此，在这项研究中，径流和基流对气候和土地利用变化的响应模拟在两个流域，上西分支杜佩奇河（UWBDR）流域在伊利诺伊州和Walzem溪流域在得克萨斯州。径流和基流的变化进行了评估，使用土壤和水评估工具（SWAT）水文模型。利用转移矩阵分析法对1992 - 2011年土地利用变化进行了评价。采用非参数Mann-Kendall检验来研究1980-2017年气象数据的变化。我们的研究结果表明，基流占近55.3%和33.3%的年径流量在UWBDR和Walzem河流域，分别。在UWBDR流域，土地利用变化和气候变率对径流变化的贡献更大。在Walzem溪，径流和基流的变化似乎是由城市化的影响比气候变率的驱动。本文报道的结果与作者最近的工作报告的结果进行了比较，以提供必要的信息，水资源管理规划，以及水土保持，并扩大目前的理解不同气候区的水文成分的变化。
Alteration of land use and climate change are among the main variables affecting watershed hydrology. Characterizing the impacts of climate variation and land use alteration on water resources is essential in managing watersheds. Thus, in this research, streamflow and baseflow responses to climate and land use variation were modeled in two watersheds, the Upper West Branch DuPage River (UWBDR) watershed in Illinois and Walzem Creek watershed in Texas. The variations in streamflow and baseflow were evaluated using the Soil and Water Assessment Tool (SWAT) hydrological model. The alteration in land use between 1992 and 2011 was evaluated using transition matrix analysis. The non-parametric Mann-Kendall test was adopted to investigate changes in meteorological data for 1980-2017. Our results indicate that the baseflow accounted for almost 55.3% and 33.3% of the annual streamflow in the UWBDR and Walzem Creek watersheds, respectively. The contribution of both land use alteration and climate variability on the flow variation is higher in the UWBDR watershed. In Walzem Creek, the alteration in streamflow and baseflow appears to be driven by the effect of urbanization more than that of climate variability. The results reported herein are compared with results reported in recent work by the authors in order to provide necessary information for water resources management planning, as well as soil and water conservation, and to broaden the current understanding of hydrological components variation in different climate regions.